Question about 1997 Isuzu Trooper

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Diagnosing a misfire

Hi.. I have a 1997 Isuzu Trooper 3.2 . A computer scan shows a misfire on the #4 cylinder. There are no obvious plug wires or spark plugs. Where are the plugs and how can I track down this misfire? My thanks in advance for any info to help me.

My email address is shotbus@aol.com.

THANK YOU!

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  • Lbci05 Mar 08, 2009

    I have 1997 isuzu trooper that shows random misfiring,but never poited to any cyliner in particular.After further probing,i discover that there was no fire to any of the three coils on one side of nthe block.Can someone help????



    my address is Lbc105@ hotmil.com

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4 Answers

A few weeks ago I swapped out the plug coil with another cylinder and the diagnostic check followed the problem to that cylinder. Since plug coils are $90 each new at Autozone, I got one from a junkyard for $5. Works great now! Thanks to all for your help and support.

Posted on Oct 21, 2008

Try change the spark plug if the problem persist switch the coil with other cylinder if the problem change to the other cylinder youl know that coil is not good.

Posted on Oct 20, 2008

Good luck i have the same car and it has been a nightmare from day one . everything is expensive to repair mine showed a mis fire in same cylinder had to supposedle head gasket was bad and gas was gettting in causing misfire

Posted on Aug 27, 2008

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I have a 1991 Dodge stealth that runs great, I can get up to 100 miles it just want switch gears 

Posted on Jan 14, 2009

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2 Answers

I have a 1997 Isuzu Rodeo 2.6L cylinders 2 & 3 won't fire after vehicle starts but will fire if I unhook cylinder 1 or 4 what will cause this


USA car? must I GUESS?
so you have 2 coil packs. ????
called wasted park
seems you typed the displacement wrong, !!! 2.2L is 4 banger...
1 and 4 fire as a pair
2 and 3 , fire as a pair , in series

so if the spark wires open , you loose a pair,
say #1 opens, you loose #4 with it.
they are wired in series.
if one spark wire grounds out , you lose only THAT spark plug.
but why would you get the odd pack to pack cross talk.
(assumes you have the HV wired right. correct?)
the packs cant be wired up willly-nillly.
this is the 2.2L coil pack.
and IS wasted SPARK system. for sure.
and can not be mixed up
the PCM is hard coded for 1,3,4,2 firing order.
and must be wired right. did you meddle here?
if you unplug the 2 one right , this must not make the 2 on left work.
pulling 1 wire, only kills the adjacent wire. normal.
see the pairs there, at the bottom see those hiddencoil packs mail coils molded to case?
if you are wired right and you have cross talk from 1/4 to 2/3 bank
the pack is bad.

25857019-xm4r4cd100gbehm3txueal2s-4-0.jpg by cross talk i mean, 1;3 effect 1/4 or the reverse.

Sep 09, 2015 | 1997 Isuzu Rodeo

1 Answer

Check engine light turned on. autozone run diagnostic check come up with engine 4 misfire. engine start ok but for a while rpm drops and engine stop. i have changed fuel filter and check fuel injectors...


Is there a coil per cylinder? That's sounds like a faulty coil, that can cause a misfire in a cylinder. It's relatively easy to test. Start your engine and when the car rpm's drop, remove the coil socket from cylinder number one and if the car hesitates more that means that cylinder is working good, then reconnect and continue with cylinder number two, remove the coil socket and look very careful for hesitation and reconnect and so long until you check all off the cylinders. If you disconnect a coil of any cylinder and the engine remains the same, doesn't hesitate more, then that cylinder isn't working, so change that coil. Begin with cylinder number 4 if you want to cause of the scanner reference.

Jun 28, 2011 | 1999 Isuzu Trooper

1 Answer

What is the order of the spark plug wires for my 1994 isuzu?


For the 1994 Isuzu Trooper 3.2L DOHC V6:
Cylinders:
.......(back).......
|..5.............6..|
|..3.............4..|
|..1.............2..|
.......(front).......
Coil Connections:
............(back)...........
|.1..4.|..|.6..3.|..|.2..5.|
............(front)............

Let me know if this helped....Thanks for using FixYa.com!

Aug 21, 2010 | 1994 Isuzu Trooper

1 Answer

When my 1992 Isuzu Trooper battery is low the car doesn't perform


if the battery starts the engine than the computer has enough voltage to operate the system, so that is not the problem, do u have any electronic fault codes, u willneed the system scanned and the engine checked for a misfire, perhaps u need new plugs and plug wires?

Jul 29, 2010 | 1993 Isuzu Trooper

1 Answer

Cylinder 1 misfire


Misfire codes (including P0301 (THIS WOULD BE YOUR CODE), P0302, P0303, P0304, P0305, P0306, P0307 & P0308) indicate that there is a misfire in a cylinder, the last number indicates which cylinder has the problem. If something is causing a miss in random cylinders or is affecting all of them, a P0300 misfire code will be stored in the car's computer. It's always smart to begin with the basics. Also consider the mileage and service history when diagnosing a misfire. Higher mile vehicles are more inclined to have mechanical issues with the engines, like low compression from worn valves or rings etc. Any accompanying codes should also be considered in case they may be related. If the spark plugs are worn (excessive gap) or the car is past due for a tune up, it may be smart to go ahead and start with spark plugs and spark plug wires and go from there.
The most common misfire causes on the cars I've worked on have been:
  1. Spark plugs
  2. Spark plug wires
  3. Ignition coil
  4. Fuel injector
  5. Wiring to fuel injector
  6. Timing Belt (IF EQUIPPED)
  7. Vacuum leak or stuck open EGR
  8. Contaminated fuel or bad fuel pump
  9. Weak compression
  10. Blown head gasket

Obviously there are many different types of cars, so a service manual for the specific one that you are working on may be required to help pinpoint the misfire you're looking for, but hopefully this will direct you to some of the most common causes of misfires in cars of today.
When diagnosing a SES light, it's best to start with a quick scan with a code reader. If checking the engine's mechanical integrity specialty tools, like a compression tester, an exhaust back pressure gage or cylinder leak down tester may be needed.

May 22, 2010 | 2001 Pontiac Grand Am SE

2 Answers

1996 not 1997 codes reading p0303; po304;p0325 also need to know what abs light on may mean need new right front driving light left rear tail light thanks


codes 03-40 are misfires on cylinders 3 & 4 and 325 is ur knock sensor if u had bad gas/water in tank or need tune up and those 2 cylinders misfired could set off code for knock sensor or visa versa as to abs light sheck sensor wires for connection and or damage none observed have rescanned and find out if sensor or unit if sensor scan code will tell u which one ur directional usually blinks faster on the side with the bulb out

Oct 18, 2009 | 1997 Subaru Outback

1 Answer

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Jan 08, 2009 | 1997 Isuzu Trooper

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