Okay. FARGIN TRUCK!!! Been dying and CELying me for months now. Before and after new ford installed CPS. I am on the second replacement injection control module. Beginning to think those aren't it..LOL!! Dunno they have been used. Batteries are two years old. PLENTY of cranking power. Cranked for 20 minutes before I called my boss with the CHEVY! CEL and WTS light are sporatic. One minute the CEL is solid and on and then it starts flashing and running at partial brightness while the WTS comes on and does the same weird possessed acts. They flash in tandem and sporatically at all times. Like they are shorted out almost. And at partial brightness.

The oil pressure builds up according to the guage after a bit of cranking. So I know I have Oil Pressure. Oh and the cabin dinger is sporatic and actes "shorted out" too. Please help. I don't mind throwing sensors at it. PCM? I need a starting point.



97 PSD
210,000
Manual
Diesel Leaking in valley on top. Stinks.

 

CHeck the relays in the power distribution box under the hood .. you can switch them around to test them . One is for the horn (IIRC # 3 ), use that one for the test ....

CEL with the key on points to PCM Or a loose chip....