When engine is warm it runs at idle ok
It can be issue
with IAC( idle air control valve) causing the problem. There
are many other possibilities causing these idle issues. Engine idles rough. There
are few help links with solutions to troubleshoot such idle issues. I
suggest you refer the link below and follow
its troubleshooting details:------ Click
the link below:----- ----------- http://schematicsdiagram.blogspot.in/2012/03/stumbling-and-stalling-at-idle-after.html ------------ http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html --------- http://repairhelpcenter.blogspot.com/2012/01/engine-stumbles-coming-off-idle-when.html ------------------ http://schematicsdiagram.blogspot.com/2011/12/erratic-idle-on-car.html ----------- Cold start problem and vehicle shudder around 2500 to
3500 rpms ---------- http://repairhelpcenter.blogspot.com/2011/12/low-idle-when-cold-out-side.html ----------- http://technoanswers.blogspot.com/2012/10/gmc-sonoma-stalls-and-idles-low.html -------- http://schematicsdiagram.blogspot.com/2011/12/gmc-idle-air-control-iac-valve.html ------------- http://repairhelpcenter.blogspot.com/2011/10/1996-camry-intermittent-engine-failure.html ------------ http://repairhelpcenter.blogspot.com/2011/10/engine-quits-at-idle.html ----------- http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html --------- High
Idle Problem http://repairhelpcenter.blogspot.com/2012/10/high-idle-problem.html ------- http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html --------- http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html -------- http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html ------- http://schematicsdiagram.blogspot.in/2012/03/vehicle-stumbling-at-idle-and-shows.html ---------- http://technoanswers.blogspot.in/2012/03/rough-idlestaling-and-erratic-shifting.html ----------- http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html --------- These
details will help. Thanks.
Ford Expedition IAC valve replacing
http://technoanswers.blogspot.com/2012/12/ford-expedition-iac-valve-replacing.html
Bad miss at idle?
http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html
Stumbling and stalling at
idle after engine rebuild?
1999 Ford F-150 Idles rough and quits when gas
pedal is pressed less?
Engine stumbles coming off idle when warm?
Erratic idle on car?
http://repairhelpcenter.blogspot.com/2012/10/cold-start-problem-and-vehicle-shudder.html
Low idle when cold out side?
GMC Sonoma Stalls and idles low
GMC Idle Air Control (IAC)
Valve Replacing?
1996 Camry intermittent
engine failure while idle?
Engine quits at idle?
Car overheats and Air blows
hot at idle?
While stop engine idles
like cylinder missing?
Idle flair is noticed on car? Rough idle? car
will not idle? Erratic idle speed?
High rpm in neutral? Inconsistant high RPM in
neutral?
Vehicle stumbling at idle
and shows code 54?
Rough idle, staling and Erratic shifting?
While stop engine idles
like cylinder missing?
SOURCE: 98 Isuzu Trooper stalls on cold start, idle issues..
I had the same issue on my 99 Trooper.
It would usually start when completely cold, but idle around 2k RPM.
It would drive fine. But if I shut it down, ran into a store, and came back out, it would start but immediately idle.
Had to ride the gas a little to get it into gear.
The Check Engine light has been going on and off for 6 months or so.
I took this to my local trusted repair shop (no Isuzu dealers within 200 miles).
The diagnosed the light, and found that the Intake Gaskets were bad or leaking.
The idling problem was related to the car not being able to control the amount of air coming in.
They replaced the Intake gaskets by the next day, and I haven't had a problem since. And no more check engine light, which has been on half a year.
Here's some details from my bill:
(1) Intake Gasket set $107.95
Misc materials $21.00
2.1 hours of Labor
The total cost to me was $345.00, and I definately don't feel gipped.
SOURCE: Idle surges when it warms up.
sounds like an engine management fault it will need to go on a computer
SOURCE: cold starts ok warms up shakes and stalls
check engine coolant temperature when it gets warmer, or at operating temperature, and verify that the temperature gauge is showing warmed up to operating temperature. If the coolant temperature sensor tells the computer the engine is cold it will over fuel and miss and the engine will die. When cooled down it will run fine until it warms up. Also could be coil if it starts missing after warmed up.
Testimonial: "we found a hole in the freeze plug causing the heat and we agreebwith his dignosistmthax much help love your site (the emergency crew Sf ca)"
SOURCE: Engine speed hunts on idle. Auto trans slow shift.
The fast idle valve is inside the throttle body. Sometimes it backs out and needs turned back in (it's threaded). This will cause the loping idle.
Get transmission filter changed with new fluid. Honda does not recommend transmission flushing.
SOURCE: car cutting out from cold start
You need a 10 mil and 8 mil spanner, carb cleaner and mabie some wd40.
Remove the big hose which goes from the throttle body to the air filter housing. Under the throttle body there is a idle control valve, unplug it, spray some wd40 on the 8mil bolts and take them off. Clean the idle control valve and housing and anywhere else which looks dirty, dry it with a lint free cloth and then put everything back on.
remove the battery negative terminal and leave it off for 30 minutes, this will reset the ecu to factory settings.
On the top of the throttle body there is a black circular rubber screw cover, take that off and there should be a plastic screw.
Connect your battery and start your engine, unscrew the idle speed control (plastic screw) so it revs at 2000rpm cold. When the temp needle reached the middle so it revs at 1000rpm hot.
This should solve the problem, if you drive around and find that you in 4th gear, with your foot off the accelerator and the idle is going up and down madly then the idle control valve is worn out and it needs replacing. Cost around £125 on ebay.
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