Ford - Mustang :: 1989 - Idle Is At 2000 RPM When Pull To A Stop Light
May 14, 2013
I posted a few weeks ago about a problem I fixed with the MAF ( leak after the MAF ). 89 GT 111k miles, ( car restored to showroom condition ) Last week I pull to a stop light and idle is at 2000 RPM. Shut engine off and restarted and all was well, and idle back to about 800. I know something was wrong before hand as the car was pulling without my foot of the throttle. This happened again when I pulled into my driveway so let it run like this and when I pulled the plug on the IAC and idle dropped to about 600.
I took the IAC off the TB and cleaned it which did not look too bad. Installed IAC but left it disconnected and set up the idle on the TB according to the shop manual to 750 RPM. Shut engine off connected the IAC and followed the instructions in the manual to reset the ECU by disconnecting the battery for a few minutes, letting it idle for 2 minutes shut engine off then restart.
Well it was good for 2 days then started the same thing, 2000 rpm at idle..for the time being I have the IAC disconnected and set the idle up on the TB to about 850 RPM.
I have been driving the car like this for 4 days now and no running problems what so ever. Funny thing is no check engine light and no stored codes during this entire episode..Had my friend with an earlier OBD scan for codes and clean.
I hate shot gunning parts by replacing the IAC. Does it hurt running the car with the IAC disconnected or should I foot the bill and get a new one ? and hope that is the problem..or could something else be causing this ?
I checked for any vacuum leaks using my propane torch no change in idle. IAC problem on 89 Mustang GT 5.0 manual trans.?
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I noticed something strange the other day that my 89 GT can be started without the key ! Everything works as it should but you do not have to put the key in the ignition lock switch. I did have the ignition switch replaced many years ago when Ford had the recall due to a possible fire.. I believe the switch that was replaced is located down under the base of the steering column and activated with a rod from the column key lock.. Is it hard to replace this column lock switch ?
I would rather do it myself instead of paying a locksmith to do it..I do have an anti-start security system on it and when you enable it it locks out the ignition. To start it you have to enter a certain 5 number code for it to crank. I had this car since new and only 117k on the clock and runs like new. Where can I obtain a replacement "key lock assembly " ? This is the original key lock on the column..Just worn out I guess . Only thing I replaced on this car was a new clutch due to a bad throw out bearing making noise at 80k and a water pump and serpentine belt at 90k and a noisy fuel pump. Still has the original prone to failure ignition control module.
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So I'm really good with pointing out cars and what engine they may have but im a derp when it comes to going under the hood. Right now I have a 2009 v6 mustang it probably doesn't matter for my question. This has been going on for awhile and I dealt with it cause I couldn't really hear with my music on. Whenever I push on the brakes to stop it makes a pretty noisy and annoying clicking noise until I stop. Not like that weird siren noise you can here from breaks but a click click click sound. What this might be? Brake calipers need a change or what? Last time I checked, probably last year, the brake calipers were still good.
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I have a 94 Cobra Mustang with a 5.0. For the past few months it has had an erratic Idle and stalls when trying to idle. I've had a number of suggestions on how to fix it and nothings seems to work. I checked for vacuum leaks, changed PCV, new plugs, new IAC valve, tested ICM and throttle TPS and even adjusted idle. Still no luck.
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I've had the fuel injectors cleaned and fuel filter changed.I notice it when im at a stop light, dont know if it does it in Park. Iv been told if it was the spark plugs or wires that the check engine light would turn on, and its not on. What should I check next????
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I have a 2004 super duty diesel 6 with electrical trouble dash lights stopped working put in new fusses where needed still no dash lights but now truck starts and runs ok but will not shut off unless I pull ignition.
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I have a 2003 Ford Musang 3.8L v6 when I start my car for the first time of the day or after several hours of sitting the car idles high between 1000-1300 RPMs for approximately 15-20 seconds after that it idles down to 600-800 rpms. I changed the spark plugs wires air filter not sure what else it could be no Check engine light.
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I was driving when I noticed my interior lights didn't shut off. After which I pulled over shut my doors and trunk and the lights still wouldn't turn off. I kept trying to shut them off, I also used my car clicker to lock my doors (which before would shut them off as soon as I hit the lock button) but they still stayed on. I am currently pulling the interior light fuse to shut them off so it doesn't drain my battery.
I tried to look up solutions but so far nothing has worked.
*I tried to turn the nob that also controls my headlights but still nothing
*I pushed in the switchs and it doesn't appear anything is wrong with them
One solution suggested that there was another fuse that controlled a timer but I'm not sure what fuse its talking about.
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1994 ford f250 7.5 I have replaced thermostat to a 185 from a 192 new fan clutch dam truck still gets pretty hot at idle or if I am at a stop light and fast It shouldn't run this hot. It gets to 95 degrees never had this problem before only thing I can think of doing Is a radiator flush and clean it really good have checked for obstructions in fins but clean.
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The weird part is, sometimes it DOES start. Sometimes it starts on the first try, sometimes I have to disconnect/re-connect 9 or 10 times before it'll eventually start. Once it starts it never loses power or has any issues. What could it possibly be?!
I've ruled out the battery, as it's literally brand new. The connections to the battery terminals seem VERY secure (I've re-done them a few times) and there's no corrosion at all. I sandpapered to be sure. I've also ruled out the fuel pump (obviously).
Could an aftermarket alarm system inherited from a previous owner be doing this? Could there be an issue with the starter? A connection issue elsewhere? Is there any way I can track down the issue on my own?
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I have a '95 Ford F150 with a manual transmission and when I come to a stop light, the engine will either idle down more then it should then go back to normal or it will idle down and then stall out. And when I accelerate, I have to gun the engine for it to go forward or it will stall out again. I replaced the fuel filter and cleaned the air intake area and it still happens.
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I have a 2000 Excursion with a 7.3 diesel. I have 245k on the clock. Engine and transmission are original. I have an overheating issue when I am towing and pull a long grade. It's not as bad as it was before but it still happens and I am tired of turning off the AC and putting the heaters on full blast to support cooling when it is 90 plus outside. A list of things that I have done so far.
Newer water pump and thermostat.
New tensioner.
Installed a new trans pan with about 7-8 larger capacity.
Used some magic juju juice to clean out colling system.
Installed a coolant filter. I am on my 5th filter. The first one didn't last 500 miles before getting stopped up.
Switch to Delo ELC.
I recently had the upper hose off and when I looked inside, I didn't see any scale or build up. I also read about some of the trucks of that vintage didn't get a trans cooler. When I looked, I saw a cooler but it doesn't look like it is plumbed through the radiator.
I want to install a large trans cooler. I don't want to replace the radiator just for the sake of replacing it. Also, look at the pic of the water pump with the thermostat sitting in it. Is the thermostat supposed to be resting all the way down? I keep wondering about that.
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I recently purchased a f150 with a reg cab short bed 4.6 4x4, and when you put it in drive the it shifts up to second fine, but when goes to third just revs up doesnt pull at all. Have to shut o.d. off and goes steady but run 2500 rpms to go 40 mph. I was told to check the solenoids but i dont know, if i do need a new trans how do i identify my trans. I know it has the code "U" on the door sticker, but its an 4r70 w code-w. But the junk yard has a YL3P-FA and a YL3P-JA?
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1997 escort lx wagon, manual, 173,000 miles... When I stop at a red light or stop sign, it takes 10-15 seconds for the idle to drop down to where it should be, and when I push clutch in to shift gears it doesn't drop down, it stays where it is. No codes are coming up. I'm thinking IAC....
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