Anyone out there have any experience with this?
Coolant fans will not run and engine will eventually overheat if left idling. If A/C is turned on, both fans will run at low speed.
I bought one new relay and sequentially put in place of each of the 3 original fan relays but it makes no difference. I did note that several times after removing the relays, the "check engine soon" lamp came on (the only time it ever did), and for just around 20 seconds, the fans ran at high speed.
I can jump around the relays and make the fans run and just for thoroughness, all fuses in the underhood fuse/relay box are good.
At this point, it's all I can think of that would easily fix this problem. Oh yeah, I did replace the engine coolant temp sensor mounted in the water pump -- again no difference.
So the question is, are there other easy/obvious things I'm missing, and if not, what are the "hard" things to examine? It's hard to imagine the PCM being at fault since everything else works properly and the car runs fine. I know that the PCM knows the coolant temperature because the car runs well cool or warm and the skip shift lamp comes on properly (only with a warm engine).
I figure you folks are the best hope I have at this point. Any help is appreciated.
FR