Question about 1991 Isuzu Trooper
I have a '90 trooper, 2.6L and I had the same problem. Although what fixed mine, may not fix yours, as there are many reasons for this condition. What I did:
Check and ensure all vacuum lines are connected, one broken or loose little bugger will cause it to die.
Clogged EGR is another reason this will happen, I replaced mine and it did not cure the problem.
On the pass. fender, under the hood is an elec. controlled air valve. If this goes bad, the truck will die.
I replaced this and it didn't cure my problem.
I finally swapped outt the air switch, connected to the ITEC and the EGR valve went bad. It's a round thing, looks like a top with 3 vacuum ports on it. it's attached to the Valve cover in the back, next to the coil. Once I swapped the this out, the truck ran like a champ.
I can only suggest that you get a Haynes or something like it and test all the different air valves. The part cost me $70 and is only availble through a dealer, and even then , they may have to order it. (Mine did, took 3 weeks to get from Japan) Hope this at least gives you a few places to start.
Posted on Oct 06, 2008
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Feb 27, 2014 | 1991 Geo Tracker
May 08, 2012 | Chevrolet Chevrolet Cars & Trucks
Aug 28, 2011 | 1991 Ford Thunderbird
May 10, 2010 | 1991 Chevrolet Lumina
Mar 27, 2010 | 1991 Ford Escort
Feb 06, 2010 | 1991 Isuzu Trooper
Jun 25, 2009 | 1991 Pontiac Firebird
Aug 05, 2008 | 1991 Suzuki Sidekick
153 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: