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Isuzu rlt engine idles ok cold but rough when it warms up and stops

Done 24000 ks does not use any oil had a new head 3000 ks ago

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Hi,it might be you maff sensor,you can check this by waiting for the car to warm up when it starts to run bad stop engine take the plug connector of the maff sensor,if when you do this the car runs better (it wont run like it dos e when the maff sensor is working properly,but will run,)then replace the maff sensor.
please dont drive the car with the maff sensor off for a long time as this will also couse damidge.
hope this was some help.

Posted on Apr 30, 2015

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2003 spacewagon wont idle when engine is cold


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:-----

Ford Expedition IAC valve replacing

http://technoanswers.blogspot.com/2012/12/ford-expedition-iac-valve-replacing.html

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http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html

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http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html

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http://repairhelpcenter.blogspot.com/2012/01/engine-stumbles-coming-off-idle-when.html

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Erratic idle on car?

http://schematicsdiagram.blogspot.com/2011/12/erratic-idle-on-car.html

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http://repairhelpcenter.blogspot.com/2012/10/cold-start-problem-and-vehicle-shudder.html

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http://technoanswers.blogspot.com/2012/10/gmc-sonoma-stalls-and-idles-low.html

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GMC Idle Air Control (IAC) Valve Replacing?

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http://repairhelpcenter.blogspot.com/2011/10/1996-camry-intermittent-engine-failure.html

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Car overheats and Air blows hot at idle?

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http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

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Idle flair is noticed on car? Rough idle? car will not idle? Erratic idle speed?

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http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html

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These details will help.

Thanks.

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1 Answer

Engine is dying on idle


quick test , replace a piece of the fuel line with a clear plastic one, chaeck for air bubbles especially with less than half tank

Jul 28, 2010 | 1990 Isuzu Trooper

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High rev, rough idle in golf


If your car is fuel injection,try changing the cold start temp sender.

Jul 17, 2009 | 1997 Volkswagen Golf

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Engine idles rough, misses at 2500-3000 rpm's


i would first check the timing and if that does not fit i would take the cover back off and look at the belt for a bad or missing tooth

Feb 14, 2009 | 1996 Toyota Camry

3 Answers

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.

Jan 06, 2009 | 1999 Isuzu Trooper

1 Answer

1992 colt, idles rough


I believe that the oil you are seeing is from the valve covers and drooling down the engine. If oil does go inside the engine cylinders it would usually show up when the motor is first started and seen as blue smoke when running and will slowly go away as the engine warms up!

Most likely you have a bad Idle motor which is mounted on the intake manifold. If the motor can run better with your foot on the gas but dies if removed then it is probably this. This motor is controlled by the OBDII computer which gets it's control signal from the temp sensor which is located either on the radiator or engine block (which could also be bad), if the electric fan (if equipped) turns on then this is not the problem part, but the idle motor is. Another possibility is that you have some bad /cracked vacuum hoses which should be checked for first, before replacing the idle motor.

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