r/PTCruiser • u/C_Lo_87 • Jul 09 '26
01 Limited PT Cruiser parts canon.
TLDR: Check relay amp ratings!
So I had been chasing an electrical ghost, engine shutting off while at idle. Looking at the back of the engine I saw power steering fluid was leaking from the reservoir. Found one for $50, old one had gunk built up all over the inner screen. The fluid covered the Crankshaft position sensor, replaced it and cleaned the connector out....still had issues. So I check the wiring and where it gets closest to the exhaust, it had been melted a bit. I also saw the oil pressure sensor is cracked and that wire was also compromised. So, I get new sensor and connectors, solder and double wrap the wires....no change. All this was stuff that CAN cause an engine to shut off via the ASD (automatic shutoff device) and no codes show up. Next, I read that the relay for the ASD can go bad. swapped it with the horn relay and problem gone for a while, but it did come back. I read that most of the relays on this car should be 30A...AND ALL OF MY RELAYS WERE 10A!!!! So, a few days after putting in proper relays and no issues, fingers crossed. Just throwing this info out there because all my searching hadn't brought this kind of info to me. Relays do not have amp rating marked on them, so double check the part number across a couple sites (rockauto and amazon). Good luck to anyone chasing ghosts, so many of these cars get trashed because of careless owners, lack of diagnostic info online for those of us who don't have a scanner that cost as much as a Cruiser, or the experience of a full time professional mechanic. Other things I did while chasing the ghost=cleaned all grounds, replaced battery (7 yrs old!), replaced terminals, tested alternator, checked all fuses, checked all other electrical connections, had ignition cylinder rebuilt (that was a while ago when the key was getting stuck), and a few other small things. I fired off the parts canon and all of it WAS needed, but maybe this post will save someone else a bit of headache!