notnats350
02-14-2013, 07:50 AM
ok so here is the deal.
My 97 xj cranks but no start. Fuses ok, fuel pump kicks on, no CEL at the start of things. I have replaced the CPS and CAM within the last 6 months. I read that the wiring to the CPS and CAM can go bad and seeing how i have over 225k on my truck i decided to start there.
I pulled the sensor off and was testing the wiring. gry/blk from sensor to ecu has 5V, so does Org wire. the Br/Yellow wire is the ground to the system has like 8 M ohms from ECU A4 to CPS so i figured it has corrosion. Tracked down some corroded wires where they ground to the block by the CAM sensor so i replaced them, i thought all was good until I tried to start and she still didnt fire.
i remeasured the OHMs from ECU A4 to the CPS again and still have 86.4 OHMS. I also read that it may be a faulty connection at the ecu so i took the connector apart to see the back of it and realized that there was a BLUE/YELLOW wire coming from A4 and not a BR/YELLOW???? I took apart some of the harness to see maybe if they spliced in somewhere but i have no clue what the heck is going on now????
I know for sure that BR/YL is the ground wire bc all of the sensors around it have the same wire and read 0.0 ohms when i hook the multimeter up btw them.
Anyone have any advice on what the heck is going on??
Where should I go from here??
My 97 xj cranks but no start. Fuses ok, fuel pump kicks on, no CEL at the start of things. I have replaced the CPS and CAM within the last 6 months. I read that the wiring to the CPS and CAM can go bad and seeing how i have over 225k on my truck i decided to start there.
I pulled the sensor off and was testing the wiring. gry/blk from sensor to ecu has 5V, so does Org wire. the Br/Yellow wire is the ground to the system has like 8 M ohms from ECU A4 to CPS so i figured it has corrosion. Tracked down some corroded wires where they ground to the block by the CAM sensor so i replaced them, i thought all was good until I tried to start and she still didnt fire.
i remeasured the OHMs from ECU A4 to the CPS again and still have 86.4 OHMS. I also read that it may be a faulty connection at the ecu so i took the connector apart to see the back of it and realized that there was a BLUE/YELLOW wire coming from A4 and not a BR/YELLOW???? I took apart some of the harness to see maybe if they spliced in somewhere but i have no clue what the heck is going on now????
I know for sure that BR/YL is the ground wire bc all of the sensors around it have the same wire and read 0.0 ohms when i hook the multimeter up btw them.
Anyone have any advice on what the heck is going on??
Where should I go from here??