Question about 1999 Isuzu Trooper

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99 isuzu trooper check trans light flashes - 1999 Isuzu Trooper

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Scan the TCM find the DTC error.
this is in the FSM book, buy one.
or go to and rear the page covering the TCM.

TSM is the tranny shifting brain box.
on some cars its moved to the confines of the ECU and renamed PCM. but its still there, the TCM brain.

Posted on Apr 22, 2015


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Posted on Jan 02, 2017

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SOURCE: Oxygen Sensor on '99 Isuzu Trooper

The O2 sensor is on the engine side (up stream) before the catalytic converter in the exhaust pipe, it is barrel shaped about the size of a jumbo magic marker.

Posted on Sep 30, 2008

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SOURCE: how do I check the transmission fluid of my 98 Isuzu trooper ?

In fact, you can. The large transmission pan has two plugs in the bottom. The higher one is a fill plug. The lower one is a drain plug. The proper procedure for checking the level is: A) Drive vehicle until transmission reaches operating temperature (go for a 30 min drive). B) Park vehicle and apply emergency brake, run gear selector through all gears (engine running, pausing 5 sec.'s in each gear) from Park, down, and back to Park (very important to be in park when checking level). C) Immediately remove the upper fill plug and check level with your finger, it should be just up to the hole, fill as necessary. NOTE: If more than a dribble of fluid drains out when you first open the fill plug then it was overfilled or the procedure was not followed. Use a catch pan under the hole just in case. Filling of the fluid is by means of a small pump and hose, commonly found at auto parts stores.

Posted on Feb 18, 2009

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SOURCE: wiring diagram for 99 trooper dohc v6

Here u go.

Posted on May 06, 2009

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If the fluid is up -
it could be a vacume loss or the shifting module..
The shifting module is what tells it to shift - and it is controled by vacume pressure..

Posted on Jul 08, 2009

  • 1 Answer

SOURCE: check engine light on an isuzu trooper

have a 1999 3.0td trooper. Diesel fuel in coolant and overheating. Suspected problem with head so replaced with new head and gasket set. Timing appears correct.Fuel appears to be flowing. Engine will not start..turns nasty noises...appears to have compression...any ideas please??

Posted on Sep 10, 2009

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1995 isuzu trooper check trans. Light and air bag flashing

that means get it serviced,
if DIY?
you must scan the 2 things, in question
the air bag scan tool, scanner.
and the PCM will report, Automatic codes. DTC errors covers this.
read it?

ill stated the obvious too.,. now;
pull battery neg lug. for 5min put back.
see if both DTC errors return.
if the bags light is on, it must be scanned to find what what the codes are...

A/T 101: ; check levels yet, fluid not pink/red but is black, filter in trans filtly packed up>?
scan the TCM? if car has TCM it has flash codes in 1995. the FSM book show you how to get those codes.
finding pre 95 scan tool is impossible for pre 96 cars. mostly."usa car usa forum"

seen here

what transmission is in this car ,if not a clue.
in 1995 many cars had 2 options, one hydramatic pure. and one TCM shifted electronic trans.
but it seems yours is TCM type, with many solenoids.

Jun 22, 2015 | Isuzu Cars & Trucks

1 Answer

1994 trooper trans light blinking took it in shop did a trans flush filter,gaskit and tran oil change. but this is the thing trooper misses and tran hold back but when shop checks computer reads nothing...

check out the neutral saftey switch on trans, if its reporting unknown gear on scanner while moving t bar it wont know what gear to be in and give you similar problems, also has oil been leaking into switch before?

Feb 17, 2011 | 1994 Isuzu Trooper

1 Answer

"Check Trans" light is blinking on my 1991 Isuzu

the gearbox is sliping have it looked at asap

Dec 02, 2010 | 1991 Isuzu Trooper

1 Answer

Hi my 'check trans' light has come on my isuzu trooper

check to see if the fluid level is right. I have not encountered a car with that light but if that light is in fact what you say it is that would be the easiest thing to check.

Apr 23, 2010 | 1999 Isuzu Trooper

2 Answers

Check trans light power

My brake lights are out, the back, reverse, and head lights all work. My steering is fine as well as my brakes. But the warning lights for brake and ABS light up on my dash board

Feb 17, 2010 | 1992 Isuzu Trooper

1 Answer

The check engine light (amber colored) keeps flashing and the check trans (red colored) stays on. I checked the fluid and it is full. Any suggestions?

need to be scanned by a scan tool to get codes. once you get them we can have a better understanding of whats going on, just a side note that the flashing means a significant problem

Dec 03, 2009 | 1999 Isuzu Trooper

1 Answer

2000 trooper jerks from a start no trans codes appear on scanner

I also had the same problem with my 2000 trooper.... the problem is u are low on fluid..... the reason u are low because your tranmission is leaking ..... it doesn't take must

Jan 03, 2009 | 2000 Isuzu Trooper

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