I have an 87 Trans Am GTA, the INJ1 fuse blew, which killed the engine. I replaced the fuse and after some trouble finally got the engine to start, but its almost as if the timing is off, or its miss-firing on one or possibly two of the cylinders. The oil pressure is all but gone, even though it has less than 400 miles on the new oil change. I pulled the dipstick and the oil level is slightly low, but not low enough to give an inaccurate reading. I pulled all the spark plugs and they are clean, double checked the firing order from the distributor, and checked the rotor in the distributor cap, everything looks clean and good to go. If anyone has any info that can help me out it would be much appreciated.

 

Have you checked the wiring for the injectors to find out why the fuse blew in the first place? Are you getting a pulse signal to all the injectors?

 

the pulse over cylinders 5 and 7 is gone, just found that out last night. is there a way to fix that or am i going to need a new wiring harness all together?

 

Repairing the wires should be no problem. Theres a million different ways to do that. I prefer the soldered method, however a crimp connector will work. The hard part will be finding where the wires are damaged.