When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
1990 Oldsmobile Cutlass Supreme SL 3.1 V6. Acquired in trade, verified spark, verified 47 PSI at the fuel rail. Had spark but replaced CPS anyway to possibly fix Injector control. Tested spark plug 1,3,6 to verify each of the 3 coil packs was working. I can only get the car to run on starting fluid. I suspect it could be a bad Injector causing all of them to go bad or that they are all just clogged as the car has probably sat for 2 or more years. However I have a loose pigtail down I'm between the oil pan and tranny pan. It is a purple/yellow wire, so assuming it'* a signal wire I have no idea where it goes. It is NOT the purple/yellow wire that goes from CPS to ICM as I have that plugged into each and just replaced CPS. I need to know what this wire goes to or at least what it does because it could also be preventing the car from starting. As previously stated it is loose ( not plugged in ) between oil pan and tranny pan. It runs up the right side of the motor and joins with the main engine harness right next to the power steering pump on top. Please help with what this wire does or any other ideas on why this car will not start ??
My memory was wrong and 47 is good with KOEO. The crank sensor sends the signal to the ICM which interprets it and produces a fuel signal. Your ICM may be bad.
Here'* a diagram of your system.
My memory was wrong and 47 is good with KOEO. The crank sensor sends the signal to the ICM which interprets it and produces a fuel signal. Your ICM may be bad.
Here'* a diagram of your system.