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Isuzu Trooper Stalling Problems

24 messages,  Last post on Dec 06, 2009 at 5:53 PM

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What is this discussion about? Isuzu Trooper, Electrical, SUV

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#15 of 24 Re: trooper stalls or die [takohunter] by trooperican Jun 17, 2008 (2:19 pm)
Replying to: takohunter (Jun 15, 2008 11:18 am) Hi,       Hope you can enyoy your car sooner, just mention the mecs my concern, maybe it can help. Normally the speedometer (not the RPM indicator) is driven by a cable that runs from the transmission to the instrument cluster, like the cable the lanyard trimmers have to transmits the rotation of the engine to the wires at the end. If for any reason it bends or if it is old sometimes brokes and you loose the speed indication.   Forgot to mention that the engine speed indication (RPM, revolutions per minute) comes from the ignition control module. It send electrical pulses to the ECm and the instrument panel. Replies to this message: takohunter (Jun 17, 2008 6:46 pm)
#16 of 24 Re: trooper stalls or die [trooperican] by takohunter Jun 17, 2008 (6:46 pm)
Replying to: trooperican (Jun 17, 2008 2:19 pm) Thank you. I will mention this to the mechanics.
#17 of 24 just cranks by jackoftrarde Aug 10, 2008 (7:43 am)
i have a 91 i replaced all spark plugs and things it still cranks but wont start
#18 of 24 91 trooper wont start by jackoftrarde Aug 10, 2008 (10:32 am)
replace coil,module,rotor cap.run fine for one day has no spark now,was hard to start.
#20 of 24 Help! '91 Trooper Stalls/Misfires by mii358 Oct 27, 2009 (10:17 am)
Guys I need some help . . . . Here’s my tale of woe.   I have a ’91 Trooper, 4 Cylinder, ITEC, 155K, 5-Speed . . . . been in the family a dozen years, has run like a top until recently.   Early Symptoms {before the Local Shop & Dealer} :   Running on the freeway out of the blue it spits, sputters and then backfires; choke, choke (gave it a little gas the first time and blew a hole in the muffler, never again. The only time I remember smelling gas) spit, sputter, then smooth out, spit, sputter and run just fine. Ever had the condenser wire rub the inside of a distributor? Same, Same.   And there doesn’t seem to be a rhyme or reason as to frequency.   Although two things that have been consistent:   It happens more frequently when the engine has reached its normal operating temperature. (removed the thermostat hoping it would run coloer)   It is ALWAYS triggered when I try to accelerate at lower RPMs, especially, if I am putting the engine in a bit of a strain.   On two occasions Local Shop repaired some vacuum lines and it ran just fine.   Then last month it limped home and on to the Local Shop around the corner, but that was it.   Local Shop kept if for 19 days : replaced distributor, coil, ERG, wires, cap & rotor, plugs, injectors, timing belt, replaced vacuum lines, smoked the intake for leaks, corrected timing, reset intake valve on 3rd Cylinder, cleaned throttle body and air sensor (at breather), checked full pump pressure 135+. Got it back idling at 2000 RPMs (just died out if lower). They were apologetic at not being able to find a cure, but still handed me a bill for $1100.   Off to the dealer : replaced the plugs, reset timing, reworked vacuum lines, third cylinder plug cross threaded – repaired. Good compression 155+ per cylinder. Once again apologetic for not being able to find the problem. $477 for their efforts.   Current Symptoms {after the Local Shop & Dealer} :   Runs pretty strong over 2500 RPMs (especially on a cold day)   I got it back from the dealer idling about 1200 with a definite blup, blup, blup idling in the driveway. (you’d swear one of the plug wires had come off)   After two weeks of anxious driving it’s starting to fail again when I put a bit of a strain on the engine and am afraid it won’t be too long until I’m on the bus again.   I have a feeling it is going to be something simple and I'm leaning toward something electrical.   Needless to say any suggestions you may render will be greatly appreciated . . . . JT of the O’Briens
#21 of 24 Re: trooper stalls or die [trooperican] by bmeans Nov 19, 2009 (10:48 am)
Replying to: trooperican (Jun 15, 2008 6:09 am) Just got your input. Did this problem also cause a bucking effect when accelerating. My unit runs better at higher RPM
#23 of 24 1989 trooper starts but will only run for 5 secs by zeev101 Dec 03, 2009 (6:37 pm)
I have a 1989 Isuzu trooper today on my way to school, the O2, oil, parking brake, and gas warning lights all came on at the same time. i had is 1/2 a tank of gas, the parking brake is off, and the oil is fine. When i got back in the car to go home it would start run for about 5 secs (if i pushed on the gas) then die. The battery is new and the alternator seems to be working ok. Has anyone else had this happen? What could cause this?
#24 of 24 1990 Isuzu Trooper is stalling after start-up by ace09 Dec 06, 2009 (5:53 pm)
I have a 90' Isuzu Trooper. When I start it up it runs for less than a minute. If I can eventually get it started...it will idle and will not stall. I spoke with a mechanic who thought it could be the ignition switch. I took it apart and crossed some wires to test and eliminated the fact that it was not the ignition switch. I just changed the fuel pump in July. I changed out the fuel filter yesterday. Could it be a relay? Any suggestions would be greatly appreciated. I am SOOO frustrated. I have been trying everything. I also replaced the alternator yesterday. It was testing low voltage.   Thank you!

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