Question about 1994 Isuzu Trooper

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I have a 1994 isuzu trooper the transmision light flashes and it doesnt want to shift automaticly and seems to make engine run bad when light starts flashing

Its a 4 wheel drive 1994 trooper with a dohc v6 the automatic transmission doesn't want to shift automatically and the transmission light is blinking then it seems to start running bad or just loses power and no one seems to know what transmission is in it ive got the info. off of it says its a hydromatic Strasbourg then its got g14 calabration can some one help

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  • Isuzu Master
  • 3,679 Answers

The name of this transmission is hydrAmatic not hydrOmatic it is made by General Motors , i cant find a reference to g14 ,look for serial number begining TH___ or 4L or 4T as these cover the age of your vehicle

Posted on Mar 29, 2014

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: 91 isuzu trooper

I had this problem once after I had taken the trooper to a car wash and washed under the hood. Got the blinking light and low power on take off. I took off the bracket that holds the trans relay along with a few other relays located on the right wheel well under the hood. Took the relay wire conections apart and cleaned them and it worked like a charm again. Even better than before. You may just check the leads to the relay to ensure that they are not corroded or gummed up. Also it may just be your relay malfunctioning. In any case your trans relay is the one that is visible without taking of the mounting bracket. Good luck

Posted on Feb 12, 2009

carlsbiz
  • 1124 Answers

SOURCE: 2000 ISUZU TROOPER WITH AUTO TRANSMISSION. CHECK

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

germcelchar
  • 389 Answers

SOURCE: Isuzu Trooper 1997. Automatic Transmission holds gears too long.

Their is a power and normal drive in trooper's power for pulling a trailer and normal for normal driving. The power drive only changes gear at higher R.P.M. Their is a switch on the plastic cover under the handbrake with p & n their is a light in the dash as well. If you are not aware of this switch then just needs switching over if you are aware of it then its probably the fuse to activate it or a wiring problem with it, Cheers

Posted on Sep 26, 2009

Testimonial: "I know the switch. But nothing changes when I switch back and forth. No light on the dashboard either. I don't know if it is in normal or power."

  • 163 Answers

SOURCE: Isuzu bighorn automatic transmission slips after heating

Change your gearbox oil, and clean out the oil strainer.
Should help.

( On some models, you have to remove the gearbox oil pan to clean the strainer )

Posted on Nov 01, 2009

Darion
  • 7 Answers

SOURCE: My automatic 96 isuzu rodeo no longer engages in

Hahahaha!... Seriously....!?!?! First off don't try to use a scan tool. The 4WD system isn't integrated into the OBD system. You won't get any codes related to 4WD.

Most likely the problem is defective shift solenoids. There are two shift solenoids which control the engagement and disengagement of the 4WD (locking the front axle gear into the the driveshaft input). These solenoids are located on the front axle. They have their own small skid plate. One is blue, and one is gray. One controls engagement, and one controls disengagement. One is a normally closed electrically controlled vacuum solenoid, and one is a normally open electrically controlled vacuum solenoid.

I'm not blindly recommending changing these, but usually one of these are the culprit of the problems you described. I'm even more confident in those being the problem due to your explanation of the the intermittent problems. At any rate test first.

The other components of the 4WD system are the vacuum lines and the actuator which is also located on the front axle and covered by the forementioned small skidplate. Moderate to serious rock-involved off-roading with a stock suspension usually results in this component being damaged.

Posted on Dec 01, 2009

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