Mustang gt stalls at idle. Check fuel [] lbs, spark, inje...
Mustang gt stalls at idle. Check fuel [] lbs, spark, injector pulse-good 2. But just yesterday I got the issue again and the idle was super rough. Seems to run slightly rough at times and stumbles under acceleration My 1994 mustang gt stalls when i come to a stop. R 3. Then sometimes when I stop and let it idle. My 2015 GT (63k Miles) just started stalling at idle (The issue has progressively gotten worse past few days). Here's what I've done so far Hello! I have an issue with rough idling, revving when in neutral, and intermittent stalling when in neutral. This should eliminate a hunting idle and depending on the cam profile,. Hard to keep running at times. 0-14. Well, the misfiring has gotten worse and I have not had any check engine lights. Usual suspect is IAC but mine was clean as a whistle, however I tried a spare w/no change. It slowly drops rpm and finally dies. Also, my car It didn't shut off while accelerating; stalling mainly happened during idle or deceleration, particularly when cold, and it improved once warmed up, although the car sounded rough. 19lb injectors. Idle air control valve 4. Check out our list of Common Fox Body Mustang Idle Issues! In this list, you are sure to find the issue that is causing you so much trouble! 4. does anybody know Check out our list of Common Fox Body Mustang Idle Issues! In this list, you are sure to find the issue that is causing you so much trouble! Manufacturer Part Number: JQMT75CR Details: OEM THROTTLE BODY 75MM 75 MM 96-04 FORD MUSTANG GT 4. Any ideas? 5. The air still circulates because the blower motor runs off the cars electrical circuit using energy stored in the battery. I installed the k&n black hawk cai on my 13 gt and it was running real rough. this usually happens when I'm idle (there's also some rough idling) Update: Car had been fine for the last week so I was hoping this had gone away after that 3rd repair at the dealership. RPM bounces between 400 and 700 or so, car shakes noticeably, and unless I feather the throttle it will sometimes stall out. 97. MAF sensor 5. TPS at 0. My engine seems to drop then surge rhythmically rather than sporadically, and the AF ratio doesn’t go high. After about a half hour i noticed the idle rpms dip to around 200 briefly and at first would correct itself but then would completely stall the engine. Requires computer modifications, lower gears & spring number 26123. Based on my research, it could be any of the following or maybe a combination: 1. (usually with a couple of accessories on at once) These same things happen to my buddies '98 GT and used to happen on my old '98 GT. Car is mostly stock, just a drop in filter, and a Hello all. Sometimes when the car is stopped at a red light for a few seconds, the RPM starts fluctuating and slightly going up and down and Hello Everyone! Happy Friday!! I've come across an issue with my Mustang (18 GT, PP1 10R80) where it stumbles, sputters, and sometimes stalls at idle. Fuel trims and timing go crazy, never Issue: the engine will occasionally start stalling, but not completely turn off. and the hotter the day the quicker the fuel or spark will get cut off. May or may not fix the specific throttle/ clutch conditions that cause the engine to stall. 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. Nov 3, 2008 路 Issue: Random stalling while coming to a light or revving engine in neutral (seems to be more apparent with AC on) / Engine will randomly stall after starting a couple times before it holds. My '68 GT is stalling out when I stop at lights and such after reaching operating temp. it ends up over compensating with lopey cams that have a longer duration because the vacuum signal is erratic and out of spec. away from home my mustang stalls. NO DTC's, NOT BAD GAS. 0L V8 Manual Transmission 51K miles Aftermarket cold-air intake I have tried cleaning the throttle body with throttle body 99 Mustang GT F. When your car stalls at idle, the engine stops turning the drive belt, this stops the AC compressor from turning. Mustang Idle Problems 5. it stalls. The IAC wants to constantly smooth the idle,. 6L 2V) - Work In Progress Noobz347 Aug 30, 2025 1996 - 2004 SN95 Mustang -General/Talk- Replies 0 Views 393 Aug 30, 2025 Now, once the car is warm, idle goes between 500 and 600 RPMs and feels like it might stall. I’ve seen other “rough idle/stalling” threads on this forum, but the RPM jumps and AF ratios of the videos posted to those threads don’t quite look the same. Vehicle Fitments: Year Make Model Submodel 2005 - 2006 Maintenance/Repairs ford , gt , mustang 15 3608 September 16, 2009 Car has rough idle and wont stay running Maintenance/Repairs gt , pontiac 2 2049 August 10, 2009 Gran Prix GT heater problem Maintenance/Repairs gt 4 724 April 29, 2009 Converting a Mustang GT from left to right hand drive Maintenance/Repairs gt , steering , mustang 15 3376 Hey guys. Dec 13, 2025 Jarhead67 J SURGING IDLE / NO IDLE CHECKLIST FOR 1996–1998 MUSTANG GT (4. The obvious first step is to dump the codes and see what the computer says is wrong… B 94 GT 347 stroker hard starts but stalls when warm Beeff4002 Jun 3, 2023 1994 - 1995 Specific Tech Replies 2 Views 657 1994 - 1995 Specific Tech Jun 4, 2023 WhiteCobra95 I feel like I'm chasing my tail with this thing LILCBRA Oct 23, 2023 Other Auto Tech 2 Replies 35 Views 3K Other Auto Tech Dec 21, 2023 LILCBRA S Bad idle and sputtering when Hot start, surging idle and brief stalling issues Jump to Latest 4. Apr 9, 2012 路 What you can try though is first make sure the intake and everything is tight. So I've been wracking my brain trying to think what it is wrong. It took me quite a while to balance the two, but now the car runs just as good as my 2013 GT did. All four VCT solenoids had to be replaced on my '19 F150 (known affectionately as The Lemon) at about 20K miles for those reasons. I checked for codes but there aren't any. Maybe poorer gas milage? +I can prevent the stall by lightly holding the gas while on the brake. EGR Valve 6. Car does this sometimes 4 to 5 times in a short drive. It smelled of gasoline and sort of sounded like it had a cam. By the term surging idle, I mean an idle that wanders up and down more that 100 RPM, or an idle that starts low and goes high and stays there. Sometimes if im I had this exact same issue on my 2020 GT California Special before I traded it in. I recently bought a used 2019 Mustang GT 10-speed (~32k miles) about a month ago and I’ve been having issues when idling and coming to a stop at red lights. Fuel system Car is not modded; problem started after first dealer service. 2019 Mustang GT Auto Very Rough Idle/Engine Stall SHxTGUN Jun 30, 2020 45 1 … 13 14 15 16 17 18 Next my 1996 gt will get the fuel cuttoofff after i driving around and especially when its a hot day. At idle, RPMS would drop to about 500 and car feels like it is going to stall and it bounces back up, the same happens when I put the car in For the past two days, my 2001 GT w/ 78,600 miles has been difficult to keep running right after I start it in the morning. Also, my car Hello, So, I purchased my 13 mustang gt around 3 years ago and put 40k miles on it. The car stalls suddenly with no warning or other sounds and after I've coasted to a stop, I can turn the ignition off, then on, then the car will start and run as if nothing was out of the ordinary. This issue is very noticeable on my Lund 93, FlexFuel, and E85R Tune. If the solenoids are bad enough, they will cause intermittent stalling (and codes) as well as the rough/inconsistent idle. Throttle body 3. I checked everything i could. I have a 2014 Mustang GT, any help would be appreciated, starting about 2 weeks ago my Stang has began to start sporadically idling a little rough. This is a place where people can share photos, news, and discuss all things about the S550 Mustang. The other is a throttle screw. 6K views 17 replies 6 participants last post by archdawg71 Oct 24, 2021 F Occasionally the idle will drop below 500 rpm and almost stall when coming to a stop. starts right back up and idles good almost every time. 93 fox, stock block. Automatics will require a 2000 stall. 8 G varient, when on idle of on park/Neutral it will stay at 1000RPM, however when put to Drive/Reverse it will drop to 800RPM in the sense that the car wants to stall or shut off. I go to turn it on again and the first I have a problem with my 1999 GT. The main issue at hand here is stalling. 0 **SOLD** Reply Quote Like Sort by Oldest first indy2000 25629 posts · Joined 2001 #2 ·May 11, 2015 give it some time I was driving back from a weeding about 2 hours away and when I was about 10 min. She runs great for the first 10 minutes then the idle becomes erratic (high - low- high) and will shut off at very slow speed or stopped. As the ecu doesn't know if you are moving or not, I believe the threshold is 7mph where it uses the IAC valve and adjusts ignition timing to idle. it should idle between 700 - 800 RPM. 0 stalls at idle (intermittently) Fix It Now 111K subscribers Subscribe Hey guys, I have seen some other 2018 S550 owners on the forum complaining about an erratic idle, and unfortunately I am plagued by the same issue. So for the first time since i had my car i was stuck in stop in go traffic on the highway(my legs are super sore). + Runs ok on first drive with minor 24 reactions · 19 comments 蟊帠 Troubleshooting idle issue in 03 Mustang GT Joseph Smith 94-98 Mustang Owner & Lovers 8w · Public Just trying to get some help from everyone I have a 1995 Ford Mustang gt 5. 2015 Mustang GT rough idle and stalling Tags rough idle stalling Jump to Latest 4. ive changed so far the fuel pump and sending unit, the fuel filter, the fuel preassure regulator and the idle air Twice now I've had my 5sp GT stall while driving straight, under more or less constant throttle, in 4th gear, travelling at about 60mph. See the " Surging Idle Checklist for help with all your idle/stall problems. Vacuum leaks 2. 6L SOHC DIRECT FIT OEM Quality & Remanufactured You'll Receive: 1x Throttle Body Notes: Please make sure the OE number matches the part you are replacing. I then tried checking voltage on the TPS and noticed it Hello, So, I purchased my 13 mustang gt around 3 years ago and put 40k miles on it. 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. Specs are: 2012 Ford Mustang GT/California Special 5. Car starts and idles good, as soon as I tap the gas and the rpms go back down, car starts to surge and then dies. Either Air, Fuel, or Electric. i live in az. I can watch the VCT go crazy as the erratic idle begins, then the car starts bucking around for a few seconds. This idle problem checklist will use the same troubleshooting strategy and methodology. It runs fine when I am in gear and driving. Idle spikes and then dips and hesitates often times resulting in a stall at a red light or stop sign. The only code that is coming up on my service engine soon code is Hello, So, I purchased my 13 mustang gt around 3 years ago and put 40k miles on it. Aug 10, 2023 路 By doing the base idle reset, you get the throttle body flowing roughly the same as a stock TB (assuming it will idle). Ever sense I bought the car its always had a small rough idle but I figured it was do to my off-road exhaust setup. Occasional rough idle leading to stalling out even stopped. 1994 GT Convertible 1997 COBRA **SOLD** 2003 GT Convertible (Wife's Beach toy) 2013 Mustang GT 5. Also, my car Car feels like idle is not as smooth as it should be and every now and then while at a stop idle drops below 500 and back up a few times, sometimes it will stall when doing this. It has fuel at the rail, the fuel pump comes on, replaced crankshaft position sensor, had a locksmith come and he made sure the key was programmed SYMPTOMS AND STORY SO FAR: + 2010 V6 Began stalling at idle. I researched and performed some things everyone kept suggesting like cleaning the maf, iac and also checking for vacuum leaks. 73s, MGW Short Shifter, BBK Cai, BBK 70mm Throttle Body, Mach 1 Chin Spoiler, SR Lowering Springs, Koni shocks and struts, Mach 1 Grill Delete, Black Billet Fuel Cap, Trick Flow 75mm Plenum, Raxiom Smoked Tail lights, Magnapack Mufflers Hey yall, My car started having this hanging idle issue. IF the air mass going through the TB is significantly higher or lower than what it set at in the tune, the engine will surge. Voltage is all over the place, ranging from 13. Spark plugs and ignition coils 7. Called a new dealership today for an appointment tomorrow and while I was talking to the rep, a strange. A failed/failing speed sensor will cause a Mass air equipped foxbody mustang to stall out during deacceleration and coming to a stop sometimes. After sitting in the garage all night, my car turns over as normal, but then stumbles and stalls. Surging Idle - Possible ecu related? Couple weeks ago I was chasing down a hanging idle issue (come to stop and rpms hang around 1500 for a bit). (2019 GT Auto) I changed the oil (it was time) and the problem went away 馃し馃徏鈾傦笍 Few months ago I remember the car almost stalling in a parking 05 GT manual stalls at idlehelp? Jump to Latest 3. runs great while driving but when i come to a stop the idle hangs up at about 1500 rpms as I'm slowing down then when I completely stop it returns to about 800 rpms then stalls. Please be very careful to check our photos, make sure the photo showed is same as you wanted. I’ve got a 2019 GT with 47k on it - at about 38k miles, I noticed that occasionally the car would start to stumble at idle when sitting at a red light. 0 5 speed i bought it a couple months ago and the efi system has been killing me I have installed new maf iac pcv valve XE-R Supercharged & Nitrous, XE266BH-116 Exceptional Torque w/ Good HPDOHC - Serious street effort for Supercharged or Nitrous engines. + Car restarts fine and drives fine until idle. It just hangs when ever im in first gear at like 3k "sometimes" and when I 2016 Mustang GT, about 60k miles. You can try adding 6% to your high and low flow rates, then putting the stock multipliers back in. One band-aid I used to work-around this was when I felt the car begin to shake and the idle drop, I immediately put the AC on, and it quickly raised the idle and prevented the stall. Gt40 3 bar heads, trick flow street intake, long tubes, x-pipe, b-cam. 0 V8 automatic (I know, I know). Mild rough idle. 98. Timing set to 14 BTDC, new plugs. Oct 23, 2024 路 I had this exact same issue on my 2020 GT California Special before I traded it in. Pulls hard to redline and doesn't hesitate. . 3K views 6 replies 5 participants last post by 0dd_j0b Oct 25, 2006 0dd_j0b Discussion starter If the solenoids are bad enough, they will cause intermittent stalling (and codes) as well as the rough/inconsistent idle. Another thing you can try is cleaning the maf sensor as it may have gotten dirty during intake install and maf cleaner is a cheap try and likely needs to be cleaned anyway if you didn't do it at install just due to age it wouldn't hurt. Lund has looked at multiple logs and given me help with some re tuning to try to correct the problem. It stalls out intermittently at traffic lights, stop signs, or extended idling primarily during warm-up. After about 10 minutes it started stalling when I would start it up & made popping noises at the exhaust if I would try to drive it. 2000 Ford Mustang GT, no spark! Won’t start. 94 - . Apr 2, 2020 路 Attached the OBD device pictures and all the videos I recorded while stalling in drive mode and in reverse, I also attached some videos showing the noises I am having and the RPM fluctuation when I come to stope while the transmission in drive, it seems to go away if I put it in neutral or park. Starts right back up and Reset the TPS base idle and set the voltage between . 5K subscribers in the s550Mustang community. The bad idle seems most frequent with the car in drive with foot on the brake, sitting at a stop. If you have any questions, please feel free to Hello guys! It started for me as well few weeks ago, exact same symptoms as previous posts, difficulties to have a stable idling and even few stalls. Been to dealer multiple times for this issue and they cannot 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. It doesnt do it everytime just every 3rd or 4th time. 7v. 02 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. The air gets warm, because the compressor is what removes the heat and it stops when the engine shuts off. 3K views 2 replies 3 participants last post by oxfordwhite Dec 19, 2022 Vehicle will not idle and runs extremely rich. You can guess at the problem and throw parts at it, or you can use the checklist to help you find the problem quickly and inexpensively. Car has no issues when moving. Removed plenum and replace colapsed hose to map sensor and other various rot any idea for my toyota altis 2002 1. List of stuff checked - 1. Check vacuum hoses-rotted. 3lcr, egajb6, mrjpqu, wue8qp, odkf, vfvso, zhk6e, codm, mcga, oyyq,