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Trooper refuse to start unless primed by petrol and idles unevenly thereafter

My Isuzu Trooper 3.0D DOHC 1999 suddenly stopped 5 months ago. Could not start at all. ECM was found faulty. ECM repaired, passed test but trooper refuse to start unless primed by petrol or cranked by towing and idles unevenly after the hard start. Local Mech suspected air lock in the system. Air leak has been checked - no change. Anyone out there please assist. C. Kent

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  • Cars & Trucks Master
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Check glow plugs and valve clearances, both of these will cause bad cold starting, but once hot will start fine

Posted on Sep 07, 2017

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6ya6ya

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Posted on Jan 02, 2017

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Randy Ohler

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SOURCE: Isuzu Trooper 3.0D DOHC 4JX1

Open one of the injector lines till fuel pumps out

Posted on Jun 22, 2011

robertjmears

robertjmears

  • 1 Answer

SOURCE: Isuzu Trooper 3.0D DOHC 4JX1

you need to set the timing to top dead centre and the flywheel has a little knotch in it set that at 6 oclock will start then

Posted on Oct 02, 2012

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Is a 1999 isuzu rodeo sport 2wd v6 auto trans idle air replacement valve interchangeable with a 1999 isuzu amigo sport


double posted why, ? please add to 1 post,
by edits or comments, please'
there are 3 , v6 engines, you never said which
why ask us, about parts, we dont sell parts
and would have to read the same books on parts as you
why ask use to do that.?
here is the list
USA only, RODEO, prime examples. the GAS v6 engines. 3.1L 3.2L 6vd1 SOHC, one cam per head, then the optional... 6vd1w DOHC, 2 cams in one head, w = DOHC optioned heads, then came... 3.5L (a stroked out, 3.2L.) 6ve1 are all DOHC engines. and have 24 valves. (6x4) with 2 rear cam sensor, used for VVT and spark both,
the engines must match ,to mix parts

here im at isuzu.com parts page
note it changed on August 99, mfg build dates. so.....
tricky
this will not cause low MPG
it will cause idle controls to be dead.
why not post all symptoms, first. and stop guessing?

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Feb 12, 2017 | 1999 Isuzu Amigo

1 Answer

My 1999 Isuzu Trooper rear wheel "light indicator"


dust on your abs sensors needs cleaning

Jun 11, 2011 | 1999 Isuzu Trooper

1 Answer

I have a 1994 Isuzu Trooper and since the service the car refuses to start from cold. When you start the engine over, the car will start but the rev's won't go over @ 1000 rev's for around 5 minutes...


Who performed your last service? If it was fine before, and now it's acting up, then maybe there is a loose electric connector or vacuum line when everything was being buttoned up.
Please let me know if I may further assist you. -TXTEXAN

Mar 28, 2011 | 1994 Isuzu Trooper

1 Answer

1999 IsuzuTrooper is idling too high while driving.


by the sound of it...the fuel mixture is off...did you get a reasnt tune-up?

Jul 21, 2010 | 1999 Isuzu Trooper

1 Answer

Won't idle


check fuel pressure regulator also idle air control solenoid.

Apr 11, 2009 | 1986 Isuzu Trooper

1 Answer

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

1992 isuzu trooper 3.2 DOHC 4X4 LOW IDLE GOES UP AND DOWN 750 RPM TO 1500 RPM


I had the same trouble with my 93 Trooper.

I went on a sensor-changing spree.

The one sensor that fixed this idle problem was the throttle position sensor.

You can get one here.

Throttle Position Sensor

It's very easy to change, and fixes the problem instantly.

Good luck.

Jul 22, 2008 | 1993 Isuzu Trooper

2 Answers

My 2000 Isuzu Trooper needs a catalytic converter.


yes they have 2 cataletic convertors, one each bank
there is EGR codes, but only front O2 sensor codes and fuel trim codes no CAT codes
what were the scanner codes or flash codes i can work with both for helpful info
you can read codes by bridging pins 5 & 6 with ignition in on position engine not running


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Jul 16, 2008 | 2000 Isuzu Trooper

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