blown up part in 1995 geo tracker computer

Thanks, I went electronic cross references manuals and found somewhat simular number that eventually translated to a radio shack TIP3055 NPN transistor. Its rated for 90 watts so I figured what the hey, installed it and it seems to be working, at least at in town speeds. I dont expect it to last forever. Like you, I also found a severe problem in the wiring harness, but I was able to temporarly rewire and rebuild that too. I believe that this happened when the young ones left the headlight on, then had to get a jump to get it going. I suspect thats when the computer got damaged. Next thing they know, its running real poor, the a backfire blew out the EGR valves and directed hot exhaust toward the harness. That kind of melted the rear half of the harness. It was an expensive lesson for them to learn. I still picture a trip to the boneyard to get a good set of spare parts such as a wiring harness, computer etc before I consider this vehicle fixed.

Thanks for your suggestion!

Check with Motorola and see if they can cross reference the driver, i had a similar problem with a Isuzu but it turned out to be a open in the injector harness.

-- George S.