Engine Performance problem
1995 Isuzu Trooper 6 cyl Four Wheel Drive Automatic 146000 miles
I drove it home the other night and then the next morning it would turn over, but didn't even " try" to start. I have spark to the plugs and I can hear the fuel pump working, but it acts like it isn't getting any fuel to the cylinders. Actually I determined that the fuel pump wasn't working so I replaced it and when the tank was down I checked at the pump and determined that I didn't have any voltage. I had already checked the fuse and relay so I thought that maybe the oil pressure switch might be cutting out the current to the fuel pump. I jumped the voltage and the pump worked, but still didn't start. I removed the jumper wire and reinserted the fuse and cranked the car to get the oil pressure up and the fuel pump works. Is there perhaps a fuel injector relay and or fuse? Maybe something to do with the emissions sensors? Was running fine before all of this. PS I haven't changed the timing belt and don't think the previous owner did either. I bought the car with 105,000 miles 2 years ago.
Thursday, March 25th, 2010 AT 10:57 AM