Engine Cranks but wont start
#31
Ok. I wish I could remember the other thread where someone had the exact same issue. No power at PCM and fuel pump was dead. They found a bad wire going to one of the relays, fixed it and everything started working again.
Did you look at the powertrain diagram I posted earlier? Those items are on the same keyed power feed so maybe we just need to find out if there is a broken wire somewhere.
Have you tested the relay with a meter to see if it's working?
Did you look at the powertrain diagram I posted earlier? Those items are on the same keyed power feed so maybe we just need to find out if there is a broken wire somewhere.
Have you tested the relay with a meter to see if it's working?
#33
#34
the manual switch that i put in replaced the original 2 little wires that come from the wireing harnis I taped the ends of each wire and left them to the side and put te manual switch in. Now however I removed the manual switch and re connected the original wires that come from the wireing harnes
#35
#36
Do you still have your old relay? If so, then you might consider removing the relay from ebay and setting it aside for now. Take your AIH relay and put it where your GP relay was. Then put your old relay (the one that you recently removed) in the AIH spot. Wire everything back up like the photo I posted and see if your truck starts.
#37
when wireing the manual switch you put the two bigger wires on the same terminals as the old relay. you put the two other wires to the side. then you put a jumper wire on the relay from theone big terminal that is always hot to one of the little terminals. then you put a wire from the outher little terminal on the relay to a momentary toggle switch and then you go from the other side of the momentary toggle switch to ground.
#38
Ok good. That seems safe. The original wires to the small terminals were left OFF of the relay while the manual switch was installed. Correct?
How did you protect the wires while they were set aside? One of those would have full time power when the key is on...
How did you protect the wires while they were set aside? One of those would have full time power when the key is on...
#40
#43
#44
What year is your truck? Do you have the second fuse panel under the hood? Try swapping the PCM relay with the blower relay and see if that helps.
Sounds like the fuse to the PCM relay coil is popped.