Question about 1999 Isuzu Trooper

3 Answers

98 Isuzu Trooper stalls on cold start, idle issues..

On cold mornings (cold is about 30-40 degrees) the engine will start and immediately idle very low, then stall. I have to keep my foot on the pedal to keep the engine running. can't seem to idle when cold. only after about 15-20 mins hard driving (like on the freeway) will it warm up enough to idle
and not stall at stop lights, etc. once warm it seems to idle ok, except that during mid-day driving the engine idles very high (2-2500 rpm) and the opposite problem occurs and at stops I have to apply the brakes much harder to hold back the engine.

Posted by on

  • 1 more comment 
  • yohannes1 Jan 21, 2009

    I have the same problem but mine is on 1999 Isuzu Trooper

  • doey38 Feb 18, 2009

    i have same issue. 1999 3.5L

  • lucasotten Feb 23, 2009

    Same thing for me. 99 Trooper.

    Seems to idle fine (though at about 2000 rpms) if it is started when cold. If I stop at a store or something for 20 minutes and start the car back up, it starts, but immediately stalls.
    When this is happening, the Check Engine light is constantly blinking.


×

3 Answers

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 1 Answer

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.

Posted on Mar 06, 2009

  • lucasotten Mar 06, 2009

    SORRY ABOUT MY TYPOS.

    Meant to say "it would start but immediately stall...".

    I always had to ride the gas to get it going ONLY after starting the car up when the engine was already warm.

    Good luck


×

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Two weeks ago I changed my intake manifold gaskets and cleaned my EGR and PCV. Haven’t had a problem since. My gaskets were three years old and were not plastic, they were some kind of sandwiched gasket. I rebuilt the motor three years ago and I had extra gaskets left over so I was able to pull them out and find that I had used McCord. The new ones I got from AutoZone are the plastic type made by FelPRo and I get the feeling they will not last as long as the McCord

Posted on Mar 06, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

5 gallon of petrol and a match. soon sort it.

Posted on Apr 28, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Camshaft sensor problems


If the sensor detects a problem, it sends a trouble code to the ECM and your "check engine" light will come on. IMO, your symptom sounds like "cold engine" issue. Myself, our 98 Toyota Rav4 will idle rough and engine stalls when put in drive, but the problem goes away when temperature shows the engine had warmed up to operating temperature. FYI the temperature sensor monitors the radiator coolant temperature. Normal engine temperature is when coolant reaches 120 degree fahrenheit. At around 130 to 140 degrees fahrenheit, the coolant thermostat opens to let radiator coolant flow from "bypass" mode to "enter radiator" mode. If it takes longer than 10 minutes for your engine to warm up, its possible the coolant thermostat is stuck in open "enter radiator" mode. When thermostat is close, coolant radiator bypass the radiator to speed up engine warm up, but if its stuck in open, it will take longer to warm up the engine. Another factor is ambient temperature. If its cold below 50 fahrenheit, it will take longer to warm up the engine.
d034c766-1274-4037-bb71-825db11c8d9f.gif
a7fc16ff-36c8-4b62-baf3-0205417dc688.gif

Nov 29, 2013 | Cars & Trucks

1 Answer

'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...


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.

Mar 17, 2011 | 1989 Isuzu Trooper

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

1 Answer

Difficulty to start early morning


I had the same problem, early morning rough idle. I changed the idol control sensor. Real easy part to change, usually about $100 for the part. My engine was teh 2.8 in 1990 Trooper. Hope it helps.

Jun 19, 2009 | 1990 Isuzu Trooper

1 Answer

Unstable RPM - is this also a safety issue??


yes here is the common problem

Here is the most common cause of surges and stalls and low idle rough idle, it is the idle speed control air-bypass valve and throttle valve (IAC for short), they get full of gunk over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Feb 15, 2009 | 2000 Isuzu Trooper

2 Answers

Isuzu 2001 diesel engine won't start


cant start deisel 3.0 lilter sounds like there is no fuel getting to the engine

Jan 19, 2009 | 2001 Isuzu Trooper

1 Answer

1990 isuzu trooper will not start in cold weather


Well, could be many things, but first and easiest, check the dist. cap and rotor, and all the plug connections. Any moisture will freeze and short out the ignition system. Also change the fuel filter. If you get the slightest moisture in the fuel it will lock up the filter when the water freezes. Could be a relay, probably "engine relay" that sticks when it gets too cold.

Some starting points I hope.

Jan 05, 2009 | 1990 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

Not finding what you are looking for?
1999 Isuzu Trooper Logo

1,959 people viewed this question

Ask a Question

Usually answered in minutes!

Top Isuzu Experts

yadayada
yadayada

Level 3 Expert

60960 Answers

Steve Hurc
Steve Hurc

Level 3 Expert

450 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Are you an Isuzu Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...