91 efi in a 88 sammy
I have an 88.5 sammy that i installed a 91 fuel injection kit on it about three or four years ago. it has ran great until just recently. now it hesitates on acceleration but only intermittently. sometimes it runs great other times I can get it to move two feet be fore it dies. I sent the ECM off to be rebuilt but that didn't seem to help. I get a code 14,sometimes a code 24, sometimes a code 45. I cannot get voltage (Which according to the service manual should be 4-5 volts) at the gray wire with the red strip at the tps. and I cannot get voltage to the coalant temp sensor wich is the red wire with the white strip. I can however get voltage out of the back of the ECM but only on A23, not A18 and only when I use A24 as the ground I cannot get voltage if I use the engine or chassis as ground. I've traced wires till I blue in the face is there anyone out there that can help. Most people tend to say that I'm over there head on this one. Granted I have not sent the ECM back yet to get it rechecked but the rebuilder insists that it was tested in a sammy before they sent it. I wanted to rule out anything that might cause this from my side first before I spend another $250.
This is a complicated problem and it may easeir to discuss over the phone. If you like e-mail me with a time and phone number and I will call you. if not this forum will be fine to.