Mustang Stalls At Idle

Still a rough idle and RPM drop but not nearly as bad as it has been. I have an 88' F-150 with a 5. The car may stall at stoplights, refuse to start, and idle poorly. Just installed the HP EFI in my '94 Mustang 347 turbo car. the car runs fine, starts fine but when left at idle for a period of time it will just quit. I just had the coil pack replaced due to rough running which is resolved. I did not move it more than a few feet in my driveway. Customers original complaint and still is when start car the " fast idle " goes up to appx 2800 rpm's and then does its. Sounds like maybe a. I was told it should tune the carburetor and put it in drive with help and adjust the idle screw to increase my rpm in drive. I changed the plugs, cleaned maf, iacv, and air temp sensor this morning, but no difference. If done right you’ll have a perfectly smooth idle. Although the truck still wants to stall, I have to give it much less gas to keep the engine turning. 0L Poor Idle Quality, Surge Posted to Ford Driveability on 10/7/2004 3 Replies i have this 92 5l with an idle problem? the car runs like an anminal when driving it,the problem is when you come to a stop. At first, this only happened when going up a steep incline, but then it started happening just about any time the Mustang was driven for more than an hour or so a day. 0 convertible that runs fine then abruptly dies and has done this several times. This has happened at least 25 times over the past year. Thats the intake tune I am using now. Made to the original factory specifications from OEM quality materials, this Mustang Idle Air Control Valve with Motor is a direct fit OEM Ford replacement part that provides reliable maintenance-free operation. How to Properly Set You Mustang's Idle. I have a 1998 Ford Mustang 3. Different owners seem to describe this problem using a variety of expressions. Why? By giving the engine more gas when it is about to stall you are essentially compensating for a faulty idle air bypass valve by increasing the throttle thus giving the engine enough fuel to stay running. Does anyone know what the idle speed should be set to and what would make the engine stall. I am the owner of a 68 ford mustang that I have had for over 15 years. It is intended to help you map out a troubleshooting plan. Q: My 1988 Mustang has an excellent idle. If you really want to test your stall speed, put your foot on the brake, rev the engine until the back tires start to spin, or the engine won't speed up any more. However, when I stop at a traffic light/stop sign occasionally the engine will shudder, shaking the car a little, and then die. I then did another reset and this time did the ECU learning on petrol alone. Disconnect IAC (Idle Air Control) Solenoid. The boat idles very rough and sometimes stalls after it has been sitting for 45 minutes + after being run. It is a must if you have one of the older 5. PS - I find that the Idle Adjustment Screw needs to be adjusted about twice a year, just before summer and just before winter. When a vehicle idles low, the vehicle stalls or shakes excessively when the brakes are activated, and this is an indication of a serious engine problem. Equip cars, trucks & SUVs with 2001 Ford Mustang Idle Air Control Valve from AutoZone. It doesn't apear to have a vacuum leak, and I have changed and checked everything I can think of (plugs, wires, points, condenser, spark coil, pcv valve, fuel pump, fuel filter; the carb has been rebuilt and other carbs have been tried in its place; I've tried moving the timing. I have a 1998 Ford Mustang 3. Rough/shaky idle fix? Fixed stalling, missing, rough idle, surprise result. The 2010 Ford Mustang has 1 problems reported for stalling/rough idle. Put into neutral and started right back up. Engine 1994 mustang gt Rough idle, misfire under acceleration: Engine '93 running rough, especially at low rpm's and idle. stalling, but it still seems rough. Mustang Idle Problems 5. it also wants to stall when cold and first started up. Idle raises and lowers, after warming up. Has 80k on it now. After all, this control valve is supposed to manage the engine idle speed so that it stays at a normal RPM rate. The TPS has to be loosened so you can rotate it slightly. And yes, you need a voltmeter to check it. It drives really nice and I love it, but when I put it in drive and I'm not moving it idle'sreally rough and everything in the car shakes. 6L Surge, Stall. I have a 2002 196, gt-40 (350 hours). For at least 4 years I've had idle and stalling issues that everyone who knows me knows about and has probably seen at least once. I just installed a refurbished Holley 0-80457S 600CFM carburetor on my 1968 Mustang 289 with Auto Transmission and I can't get it to idle properly. It also will start to squeal from time to time which may or may not be related. Due to this engine rebuild was necessary. rolling windows up and down while in idle rpm's. Engine Idle Is Too Low Or Stalls Dirty Throttle Body. Please also check out the statistics and reliability analysis of the 2015 Ford Mustang based on all problems reported for the 2015 Mustang. Well car starts now, but when I blip the throttle and let the RPMs come down on their own, they come down too far and stall out the engine now. When your car stalls, it means the engine has died, which can be a really frustrating and even scary experience. Mustang stalls out and some times restarts right after, then some time doesnt 10 Answers. Changed oil, filter, and sender unit to no avail. My '90 with 351pcm carby would idle and rev fine and stall out when put in gear: Short term I did the following: 1. What this series of articles is aimed at is how to fix the most common idle problems found in the Mustang. • erratic idle, drops from 1,500 rpm to low hundreds in a few seconds, when the idle is stable it is at 1,100-1,350rpm although the unit is set to 950 rpm • car stalls when coming to a stop unless kept in gear • backfiring on deceleration The mechanic who is troubleshooting the system can't figure it out and MSDs tech line has been no help. My 2005 v6 automatic mustang stalls after about 20 minutes of driving. My 2010 v6 mustang occassionally stalls when I turn on the heat, headlights, radio, or windshield wipers. Car: 2008 Maxima SL KM: 92,000 Problem: After starting the engine on a normal day, the engine is relatively quiet and RPM is stable around 1000. ) raised the idle set screw level (worked but putting into gear at high idle is probably hard on the tranny, didn't really address my problem). could be the idle air control (IAC) or also known as idle bypass valve. I have a 2002 196, gt-40 (350 hours). Look at this common problem, it just might be what you need to fix it. No movement on the tach--I think the ECU will keep idle steady no matter what it takes--no CEL or other indication and it didn't threaten to stall, just noticeably rougher than usual. Got it running and have a great idle warm. I love me car, but its been stalling out (at a stoplight, pulling out of parking spots, while driving) I've done everything I could think of to fix the problem and it still happens!. Turned it off and added more fluid, now when I put it in gear the car engages but bogs the motor down and stalls. they are rounding up wild. He knows pretty much nothing about carbs. They said "Manufacture Ignition, Engine Misfire & Camshaft Position Sensor. One problem related to car stall has been reported for the 2015 Ford Mustang. It has been running fine since I got the JLT big cold air intake ( for a roush supercharger) and tune was installed in Sept of this year What I have noticed was at the Idle it goes to 500 RPM then stalls. Average repair cost is $100 at 92,800 miles. Set to where you are comfortable with idle speed. The two most common parts that cause poor idle and stalling issues on the EcoBoost mustang are-Lowside Fuel Pressure Sensor Part Number - BU5Z-9F972-B Evap Purge Solenoid Part Number - FR3Z 9G297 C Sent from my SM-G960W using Tapatalk. • erratic idle, drops from 1,500 rpm to low hundreds in a few seconds, when the idle is stable it is at 1,100-1,350rpm although the unit is set to 950 rpm • car stalls when coming to a stop unless kept in gear • backfiring on deceleration The mechanic who is troubleshooting the system can't figure it out and MSDs tech line has been no help. It does this in forward and reverse, is it the stall converter or time to rethink having this boat anchor in my car? -----. Cars need maintenance, there's no question about that. My 2005 v6 automatic mustang stalls after about 20 minutes of driving. I changed the plugs, cleaned maf, iacv, and air temp sensor this morning, but no difference. I have checked the idle air control, the coolant temperature sensor, and the Mass Airflow sensor. The most common culprit is carbon buildup on the throttle body, exhaust gas recirculation (EGR) valve and idle air control (IAC) valve. My issue is once the truck has driven down the highway and is good and warm, it will stall when at idle (1,000 rpm) like when i pull up to a stop sign. The Ford Mustang, with the 4. How do we adjust an engine’s idle speed? In the past, adjusting an engine’s idle speed was easy. If this is what you're getting, then that's kind of normal. Idle speed will vary depending upon modifications made to the engine. On older engines with carburetors, cold stalling (and hard starting) is most often due to an automatic choke that is sticking, misadjusted or broken. I've own the car now for over 2 years and haven't been able to narrow down exactly why the car stalls at idle. From Ford Performance: 1986-1995 Mustang Idle Setting Procedure. Components in the fuel, ignition, emission and other systems should work correctly. I'd need to see what the fuel trim is doing (adding or subtracting fuel) and what is the idle air control valve being commanded to do. If i have the air off it will uually idle fine, but with the air on it surges up and down. If engine stalls, turn throttle-stop screw in one full turn and restart. Still did not fix problem, now if you unplug most of the sensors no check engine light comes on or change to the engine. Maybe I was wrong about the outside temperature effecting the truck. It does not spit and sputter, it will just die like someone turned the ignition. Looking for a 2001 Ford Mustang Idle Control Valve? Get yours at Wholesale Prices and Free Shipping over $50 only here at AutoPartsWarehouse!. I have checked the idle air control, the coolant temperature sensor, and the Mass Airflow sensor. It will have a really rough idle, the car will shake / vibrate and the throttle response is horrible, it sounds like its bogging out, and sometimes even stall. If you already did this, you didn't do a good enough job. Fluctuating Idle Speed. 8L //// Engine Vehicle Shakes entire front end of car when at idle, all the way up to 2,000 rpms then it goes away. Running Problems. 9L 4x4 with 195K miles. No codes are thrown. 6) Today, the car magically started again. Weeks will pass until the problem occurs again. It's only got about 40k miles on it. I wasn't sure if it was the transmission, brakes, or what. I don't know why this seems braking related, but not sure. The rain factor compounds my confusion as is the fact that it will start right up afterwards. It does not spit and sputter, it will just die like someone turned the ignition. Look at this common problem, it just might be what you need to fix it. If I increase the curb idle to where it will stay running it is way to high rpm. My 2010 v6 mustang occassionally stalls when I turn on the heat, headlights, radio, or windshield wipers. In addition my Dashpot was WAY out of adjustment and not engaging until about 1,000 RPM, should be at about 2,800 RPM. How do we adjust an engine’s idle speed? In the past, adjusting an engine’s idle speed was easy. I have a 1988 260e mbz. It's a 1996 Mazda MX-6. If this is what you're getting, then that's kind of normal. Engine stalls when you come to a stop, after the engine warms up. stalling, but it still seems rough. However, when your idle air control valve is malfunctioning or failing, you lose out on the consistent power you rely on. Things I have done: Checked for injector operation. idle will not raise if he have a leak at the brake booster vacuum line. In this case the O2 sensor needs to be tested. it usually stalls at the first stop after the engine warms up, 8-10 miles down the road. 0 with a high lift aftermarket camshaft. 2015 Ford Mustang Ecoboost engine stalls randomly was created by eadc We have a problem and so far Ford hasn't been able to replicate in their shop. I read that i could relocate my Mass air meter to possibly cure this. Genuine Ford part# CX1784. Engine 1994 mustang gt Rough idle, misfire under acceleration: Engine '93 running rough, especially at low rpm's and idle. 2000 Ford Mustang 3. I changed plugs on my wife's 2. Ok here it is: I have a 2005 rs. Sometimes it can go a whole drive without stalling and sometimes it dies when at a stoplight. However, if done wrong, you'll wind up with stalling, pinging, and a rough idle. Every classic Mustang owner wants his car to run "like new". However, when your idle air control valve is malfunctioning or failing, you lose out on the consistent power you rely on. For at least 4 years I've had idle and stalling issues that everyone who knows me knows about and has probably seen at least once. The powertrain control module (PCM) pulses the IAC to obtain desired idle speed. It may well be that these events are the hesitation & stumble problems described in this article. I posted a video asking for help. then made a fuel adjustment to the tuneand After I loaded the new tune, the idle hunting and stalling was back. What this series of articles is aimed at is how to fix the most common idle problems found in the Mustang. The symptoms include stalling when coming to a stop, or very low idle after starting, or stalling if the throttle is "blipped" (opened and closed quickly). I recently bought a 1986 thunderbird turbo coupe. I just purchased my first 03 cobra, and it has the common "stall" while rolling in neutral up to a stop in cold weather. how do i go about adjusting the carburetor to correct this, or do you know of any websites that can help me out. If the IACV starts to stick, as mine did, it won't let enough air in for the engine to idle. Resist the urge to adjust the TB set screw for low idle concerns. The engine's idle speed is controlled by how much air is allowed to bypass the throttle via the idle bypass circuit in the throttle body. We made one pull to 5000 to verify the A/F and clutch in idle after a short pull had minimal idle hunting again and didn't cause the car to stall. The idle air control motor (IAC) controls changes in idle caused by engine load. Put this idle control plate on and now it's a different car. Please Note: These steps MUST be performed in sequence!! Get engine to operating temperature. Idle BasicsAll carburetors come with a simple yet efficient idle circuit. And yes, you need a voltmeter to check it. If done right you'll have a perfectly smooth idle. Still did not fix problem, now if you unplug most of the sensors no check engine light comes on or change to the engine. I replaced the sensor and put in a new set of plugs. 1_ZoNiE Gearhead. Your Ford Mustang was built to be impressive in both style and performance. Jeep stalls at idle and/or won't idle Mustang, sounds like you need a new mechanic, they seem to be throwing parts at it, based on the code. The engine’s idle speed also changes, based on outside conditions. Find FORD MUSTANG Standard Motor Idle Air Control (IAC) Valves and get Free Shipping on Orders Over $99 at Summit Racing! Standard Motor Products replacement idle air control valves help you get maximum fuel efficiency and powe. Reconnect your battery's negative terminal. With that said all the idling causes for lots of vibration when the vehicle is stopped at a light or a stop sign (this problem does not happen very much when driving or parked). Several things can cause an automatic car to stall, including a leak in the vehicle's vacuum system. A computer is adjusting the idle speed, based on complex calculations. It's had this problem since I got it, and I figured it would be an easy fix, but not so far. This valve is comonly called the idle motor, the IAC (idle air control) or the IAB (Idle air bypass). Set idle using throttle stop. We here at Auto Parts Warehouse want to make sure you're happy with your car part purchases. Probably the most common problem that causes idle problems in multiport fuel injected engines is a carboned-up throttle body. Every classic Mustang owner wants his car to run "like new". From Ford Performance: 1986-1995 Mustang Idle Setting Procedure. In this article, we'll show you how to clean an EGR valve. Starts right back up but have to manually keep foot on accelerator. Then it won't start again for around half an hour. Had to push car home. Learn about this problem, why it occurs, and how to fix it. It has been stalling intermittently when at low idle such as coming to a stop when I engage the clutch, even very slow speed turns I can hear it want to stall. 4 liter engine that was stalling at idle and had a surging condition at lower engine rpms. 0L V6 engine, is known for a rough idle, engine stalling, loss of power, and misfires, accompanied by the check engine light. 0L Ecoboost Escape at 30k because the idle was a little rough, checked the gap and it was way outta specifications. « on: March 16, 2011, 02:34:52 am » After performing what I consider to be some very basic work on my 1988 5L Mustang 3 weeks ago, the engine will no longer “fast idle” when started cold. Posts: 866. If I increase the curb idle to where it will stay running it is way to high rpm. 0 LX has a very consistent stalling problem when travelling long distance on the highway at a good speed. Stalling problem, no idle, performance cam and holley carb? I have a new to me 67 fastback that just developed a severe stalling problem, so bad I can't drive it. If its running rough/ missing, and everything else is fine i think that indicates a vacuum leak. A stalled engine can keep your vehicle from moving effectively through traffic which can create a dangerous condition which could result in an accident. Leading provider of high performance automatic transmissions, torque converters and drivetrain components for race, street/strip, hot rod, street rod and towing. I asked because it seems unusual that a spark plug wire related problem would cause stalling at idle but the car would run fine at higher speeds. Intermittent cold stalling problems are almost always fuel-related. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35. When I'm waiting at a stop light for about a minute the car starts to hiccup and if I don't put it in neutral to raise the idle speed it will stall. Watching the tachometer shows an idle speed around 500 to 900 RPM. Ford Mustang owners have reported 34 problems related to engine stall (under the engine and engine cooling category). I have an 88' F-150 with a 5. 0 with a high lift aftermarket camshaft. The surge was from around 500-1500, and would eventually stall without intervention. But the 'kin thing still stalls and won't idle properly. The 2006 Ford Mustang has 6 problems reported for engine stalls/dies while driving. Setting base idle speed, also called minimum air rate, allows the engine to idle near the center of the idle air control valve's. won't idle, starts up with a little help but will not idle. 1_ZoNiE Gearhead. I just had the coil pack replaced due to rough running which is resolved. I have a 66 mustang with the 289 (not the high output). You want the RPM speed of the engine where it needs to be when you're idling and that's another function of the Mustang idle control valve by Mustang. This is almost always fixed by cleaning the throttle body. My 1990 mustang 5. Does your 'Stang stall when you come to a stop, or even when you put it in gear? Well if so then this series of articles is for you. Also change the ones on the Mustang at 30k and found the same thing. In this case the O2 sensor needs to be tested. After getting the engine rebuild the stalling and stumbling problem at idle started. Looking for a 2001 Ford Mustang Idle Control Valve? Get yours at Wholesale Prices and Free Shipping over $50 only here at AutoPartsWarehouse!. Had a hard time getting it to idle correctly kept wanting to stall out. Idle speed will vary depending upon modifications made to the engine. It doesn't apear to have a vacuum leak, and I have changed and checked everything I can think of (plugs, wires, points, condenser, spark coil, pcv valve, fuel pump, fuel filter; the carb has been rebuilt and other carbs have been tried in its place; I've tried moving the timing. Turn off the engine. If engine stalls, turn throttle-stop screw in one full turn and restart. I am having problems with it. A leak in the vacuum system can cause the car to lose power. It has been stalling intermittently when at low idle such as coming to a stop when I engage the clutch, even very slow speed turns I can hear it want to stall. The Mustang’s idle strategy relies on the idle air being supplied by the IAC. 7 on youtube. after that, it won't rough idle at a stop sign or try to stall. Diagnosing the cause of. 98 vortec 5. I have a 2003 Mustang GT that stalls at certain times. It was mid to high 50s today and the truck was running a bit better. Why? By giving the engine more gas when it is about to stall you are essentially compensating for a faulty idle air bypass valve by increasing the throttle thus giving the engine enough fuel to stay running. Problem still is the idle is still a bit low (600) and when I turn the AC on it will swing from 400 to 600 and act like it could stall but only when I give it gas briefly and let off (stop and go traffic). From what i can tell the car has to warm up and then as soon as i pull up to a light and put the car in neutral, after about 10-15 seconds the car will exhibit RPM drops and actually stall out. It just dies as though the key was turned off. com, there are several reasons vehicles idle low. A year later, Ford upsized the 144 to 170 ci. I have an '89 and it still takes Type F in the power steering and Dex/Mercon in the transmission. Here's what I've done so far: 1. My car was running perfectly until I disconnected the negative battery terminal to install fog light bulbs. Set idle using throttle stop. It must, therefore, be cleaned at regular intervals. 1989 coupe mustang 347 idle - this is my project car. The IAC is blamed and cursed for every idle problem there ever was on a fox Mustang. Adjust the lifters first then set the idle mixture & speed and timing as well. 96Z28 code P0507 idle too fast car is a 96Z28, auto, headers, The code is P0507 (Idle Control System RPM Higher Than Expected). Average repair cost is $80 at 29,450 miles. Have a 1995 mustang 5. At first, this only happened when going up a steep incline, but then it started happening just about any time the Mustang was driven for more than an hour or so a day. it usually stalls at the first stop after the engine warms up, 8-10 miles down the road. With that said all the idling causes for lots of vibration when the vehicle is stopped at a light or a stop sign (this problem does not happen very much when driving or parked). 0 convertible that runs fine then abruptly dies and has done this several times. Engine 1994 mustang gt Rough idle, misfire under acceleration: Engine '93 running rough, especially at low rpm's and idle. After a few minutes the car starts back up with no problems. When you experience irregular or fluctuating engine idle speed, this usually means your idle air control valve is bad. Stalling is caused by a loss of air, fuel, or electricity while the engine is running. • erratic idle, drops from 1,500 rpm to low hundreds in a few seconds, when the idle is stable it is at 1,100-1,350rpm although the unit is set to 950 rpm • car stalls when coming to a stop unless kept in gear. My car was running perfectly until I disconnected the negative battery terminal to install fog light bulbs. Hi everyone. and have tried adjusting it to its proper idle rpm im starting to think that sumthing else is the problem. Hi all- newbie here, the info is inaccurate due the available list, i bought a 55 ford with a 302 engine in it, everything is either new or rebulit, it ran super for months (800 miles) it always starts up and runs fine but shuts off after 5 mile driving, after a couple restarts it will go about 1/2 mile then shut-off, then needs to sit a good while before it cranks over, any ideas?- john. 2002 Mustang GT Idle and Stalling Issues I've had my 02 GT automatic for about a month now and I've noticed a few issues I need to take care of, but I'm not very knowledgeable when it comes to cars and am looking for other opinions. Once in a while (not every day) our mustang engine stalls for no reason. Why is my car stalling?. Idles perfect no more stalling also it gives you much more control over the idle adjustment. A dirty throttle. I have a completly stock 87 mustang gt. Please also check out the statistics and reliability analysis of the 2015 Ford Mustang based on all problems reported for the 2015 Mustang. Stalling problem, no idle, performance cam and holley carb? I have a new to me 67 fastback that just developed a severe stalling problem, so bad I can't drive it. Does your 'Stang stall when you come to a stop, or even when you put it in gear? Well if so then this series of articles is for you. Customers original complaint and still is when start car the " fast idle " goes up to appx 2800 rpm's and then does its. I need to whiskey the throttle an dride the clutch a bit until I get up some speed. And yes, you need a voltmeter to check it. My 2005 v6 automatic mustang stalls after about 20 minutes of driving. Please Note: These steps MUST be performed in sequence!! Get engine to operating temperature. i have a 51 plate ford focus GHIA with all the bells and whistles/ optional extras that are availible on this model, Normally it will idle at 750, however recently, after cruising in higher gears, the engine will rev very low and stall as i come to a stop with the clutch dipped, i mention all the extras because the battery fitted is not standard and sometimes struggles when everything is. Ford Mustang Problem With Idle Air Bypass Valve May Cause Engine Performance Problems - 6 reports. Common reasons include vacuum leaks, carburetor problems, ignition issues, damaged power circuits and dirty fuel injectors. When at an idle, the idle varies from 800 down to 300-400 rpm '95' 5. There are many things that could cause a car to stall, with solutions ranging from simple to complex. I changed the plugs, cleaned maf, iacv, and air temp sensor this morning, but no difference. 0 Mustang will no longer "fast idle" on cold starts. It's been even hotter--105 a couple times--and I didn't have this issue. For at least 4 years I've had idle and stalling issues that everyone who knows me knows about and has probably seen at least once. I had the same issue with my 04. Ford's lightweight six-cylinder engine debuted in the '60 Falcon and Mercury Comet as the 144ci six. Ford Mustang owners have reported 34 problems related to engine stall (under the engine and engine cooling category). After getting the engine rebuild the stalling and stumbling problem at idle started. • erratic idle, drops from 1,500 rpm to low hundreds in a few seconds, when the idle is stable it is at 1,100-1,350rpm although the unit is set to 950 rpm • car stalls when coming to a stop unless kept in gear. See "Surging Idle Checklist for help with all your idle/stall 98 Mustang v6 Oil pressure drops at idle: SN95 V6 Mustang. Problem still is the idle is still a bit low (600) and when I turn the AC on it will swing from 400 to 600 and act like it could stall but only when I give it gas briefly and let off (stop and go traffic). Genuine Ford Part. Made to the original factory specifications from OEM quality materials, this Mustang Idle Air Control Valve with Motor is a direct fit OEM Ford replacement part that provides reliable maintenance-free operation. What causes a rough idle? A rough idle can be caused by many different car faults. After 2 hours of driving highway speeds and then pulling off the highway, the car stalls after I brake or stop at a light. A car that stalls while you're driving is a dangerous situation no matter where it happens. It starts fine, although the idle is very rough the truck shakes in idle. The idle air control motor (IAC) controls changes in idle caused by engine load. They tend to go bad and they control the idle of the car. PS - I find that the Idle Adjustment Screw needs to be adjusted about twice a year, just before summer and just before winter. Signs and Symptoms of a Bad Idle Air Control Sensor by Richard Rowe Connected to the engine's primary air intake valve (the Throttle Body, or TB), the Idle Air Control (IAC) valve is responsible for making minor adjustments to engine airflow. Cars need maintenance, there's no question about that. Mustang stalls out and some times restarts right after, then some time doesnt 10 Answers. It's been even hotter--105 a couple times--and I didn't have this issue. 1992 Ford Mustang LX 5. One problem related to car stall has been reported for the 2015 Ford Mustang. i recently finished the engine and i am now starting on the body. Hi everyone. A computer is adjusting the idle speed, based on complex calculations. 4 liter engine that was stalling at idle and had a surging condition at lower engine rpms. could be the idle air control (IAC) or also known as idle bypass valve. Ford's lightweight six-cylinder engine debuted in the '60 Falcon and Mercury Comet as the 144ci six. Several things can cause an automatic car to stall, including a leak in the vehicle's vacuum system. How to Determine Why a Car Stalls at Intersections. When I'm waiting at a stop light for about a minute the car starts to hiccup and if I don't put it in neutral to raise the idle speed it will stall. The idle speed in the 1995 Ford Mustang is computer controlled however the computer relies on accurate base idle speed adjustment to be able to control the idle under all conditions. Adjust the lifters first then set the idle mixture & speed and timing as well. It is intended to help you map out a troubleshooting plan. For at least 4 years I've had idle and stalling issues that everyone who knows me knows about and has probably seen at least once. com, there are several reasons vehicles idle low. It does this in forward and reverse, is it the stall converter or time to rethink having this boat anchor in my car? -----. Please also check out the statistics and reliability analysis of the 2015 Ford Mustang based on all problems reported for the 2015 Mustang. It's only got about 40k miles on it. I have a 66 mustang with the 289 (not the high output). I first went and tried to move the car and the transmission was not engaging until I reved it up. If the stalling at idle only occurs when the engine is cold then you may have a problem with the cold start valve. Please Note: These steps MUST be performed in sequence!! Get engine to operating temperature. Setting base idle speed, also called minimum air rate, allows the engine to idle near the center of the idle air control valve's. then made a fuel adjustment to the tuneand After I loaded the new tune, the idle hunting and stalling was back. Vintage Mustang Forums - View Single Post - MSD Atomic erratic idle, stalling. However, when your idle air control valve is malfunctioning or failing, you lose out on the consistent power you rely on. Made to the original factory specifications from OEM quality materials, this Mustang Idle Air Control Valve with Motor is a direct fit OEM Ford replacement part that provides reliable maintenance-free operation. It's only got about 40k miles on it. The engine's idle speed also changes, based on outside conditions. PS - I find that the Idle Adjustment Screw needs to be adjusted about twice a year, just before summer and just before winter. My 1990 mustang 5. Cars need maintenance, there's no question about that. He couldn't reproduce the problem.