Question about 1989 Isuzu Trooper

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'89 Isuzu Trooper with cold idle problems. Stalls until warm-then, idles fine. Checked the under-console diagnostic leads and get message regarding "cold idle solenoid". Cannot find this. Is it more than just a piece of pipe? That's all I can find on microfiche at Auto Zone.

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  • Isuzu Master
  • 3,640 Answers

This can be related to the Crank Angle Sensor (CAS). A bad CAS will cause all these problems. crank angle sensor ( built in distributor ). is it the 2.6 sohc, at least on the 88 its in the distributor.

Posted on Mar 18, 2011

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Chevrolet Caviler 2.4 - 2000 Stalls at idle (stopped) once car is fully heated up.


Check coolant temp sensor. These fail often and cause all kinds of mystery problems. This unit acts much like a choke on old carb engines and can fail in different ways. Most common (I think) they fail such that the ECU thinks the engine is cold when it has begun to warm and thus the ECU delivers too long a pulse to the injectors so that the engine runs way too rich. I think it is also possible for the sensor to fail at any point between cold and warm such that the fuel mix is wrong except for the particular temp at which the sensor is stuck. Also O2 sensor has some fuel "trim" input.

Feb 26, 2015 | 2000 Chevrolet Cavalier

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1987 mercury cougar 5.0. When the engine is started cold, it stalls after 30 seconds. To keep it running, you have to rev the engine until it is warmed up. While reving the engine, it feels like it misses...


hi,
plug the EGR line and see how it acts. better yet put a ball bearing in that line and reconnect it to the EGR and see if it goes away. definate vacuum issue somewhere. tranny modulator, check every line coming off the firewall manifold. the throttle position sensor might need to be replaced. its one of the only moving sensors under there. on my 89 tempo I could adjust my idle, move that idle screw around so it idles up a bit to get it out of that dead area on the TPS. plug wires after that. those notchbacks are getting extremely rare, and with a V8! put it far far away....

jm

Mar 20, 2011 | 1987 Mercury Cougar

1 Answer

When car is idle it will rev from 2000 rpms to 1000 rpms and it will do so for a little bit. but after car has been driven awhile it runs fine.


You have a vac leak. It's related to cold vs hot. Possibly throttle body gasket. IE: when it warms up the metal expands and seals the leak, when cold it contracts and exposes leak.

Jan 03, 2011 | 1994 Isuzu Trooper

1 Answer

Idled high, replace IAC and PCV, now idles low and stalls


On modern day cars the parts that get fitted need to be adapted to the ECM using a decent diagnostic machine. I bet that this was not done and the car is now suffering as a result.
Something to try is resetting the ECU, simply disconnect battery for 10 minutes, reconnect, then start car from cold *without touching gas pedal* and leave idling until the rad fan comes on (this resets all the base idle settings) then take it for a drive - hopefully will solve the problem

Nov 18, 2009 | 1990 Dodge Caravan

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My 1992 3.2 petrol trooper starts an idles fine


check for spark at the coils under load. May have to change some ignition coils.

Feb 23, 2009 | 1992 Isuzu Trooper

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

Help please !!!


If I remember correctly it is the EGR valve. That simple. it is the round thingamajigger with vacume tubes comming aout the top and bottom side, its in the back (firewall) to the right of intake manifold on 4 bangers. Also check all vacume hoses for cracks, connectors etc. Especially right under the intake manifold where ther are three of four together, they get bunped off easially. also when you turn on the Defrost it will help to increase idle untill warm. don't forget to check air filter too. if dirty it can cause the vacume ssensor to missread and please make sure it is all sealed properly, clamps tight.

Nov 19, 2008 | 1989 Isuzu Trooper

2 Answers

Stalls and wont idle when cold


many automobiles behave that way on a cold start, so you don't have to worry about it. just continue to rev the engine until it is warm!

Sep 09, 2008 | 1999 Isuzu Trooper

1 Answer

Will not idle very good.


my trooper will not idle properly /it takes to long to warm up/after it warms up it rides with a high and low idle

Jul 15, 2008 | 1989 Isuzu Trooper

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