20 Most Recent 1989 Isuzu Trooper - Page 2 Questions & Answers

I don't know if you've figured it out yet, but it's timing or a firing order related issue.

do you have auto locking hubs? if so save yourself the hassles i did not and buy a decent set of manual hubs.my 1989 4 wheel just gave up one day..no wear on axles..front drive shaft spinning but no action..i replace auto locking hubs and re assembled to no avail...no answers why either...have pulled it all apart and put back together many times and no change,only to be told to put manuals in and live happily ever after!!done ....and done!

CHECK FOR ANY VACUUM HOSE LEAK,ALSO DOES YOUR DISTRIBUTOR HAS A VACUUM VALVE ON THE SIDE? IF SO CHECK WHETHER IT IS WORKING USING A VACUUM TESTER.

are you certain the right size fuse is being used? If so, you may have a bad fuel pump or a short in the fuel pump wiring somewhere. Check the wiring first and look for rubbed raw spots where it may have been rubbing on the undercarriage for the last 20+ years.

I don't show any switch between the fuel pump relay and the pump in the tank.Only Ford products used an inertia switch that I know of.

there is a sending unit for the guage.but if it has been running a few minutes and gets hot you may need to check the thermostat or water pump.check the water pump by taking the radiator cap off.then start the vehicle,look into the radiator and see if any coolant is flowing or circulating.do the cheapest fix first

Are you getting power to the pump? Does the pump turn on? Just because it is new does not mean it is not defective or incorrectly installed.

Usually elecrical, switch, wire, connection, or mechanical adjustor on shifter linkage. I had the retainoing bolt break on me for no reason.... No biggie just a pain in the Donkey :-)

Change the water pump. Impeller is spinning on the shaft.

If the gas is soaking the plugs it means that the spark is missing or the timing is totally off - check the timing, the ignition wires from the distributor and the ignition module, verify the ignition coil and its cable with an ohmmetre.

Its called ICM (also called power transistor).ICM means ignition control module.-------- To order this part, click the link below:--- http://technoanswers.blogspot.com/2011/07/ignition-control-module-for-1989-isuzu.html ----------- This should help.Thanks.Helpmech.

Depending on how good the guage is, when the yellow light comes on telling you that your fuel is low, you have approx 2 gallon left in the tank. It is never good to run on a tank that low due to heat buildup of the pump which causes pump failure. The gas acts as a coolant for the pump.