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Discussion Starter #1
ive been having problems with my fan not working

with it plugged in it wont come on and wont say HOT when its hot

with it unplugged it says check engine and will work periodically

with a jumper wire from batt to fan works fine

any ideas appreciated other then run to switch i would like it to work properly
 

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Have you checked the temp sensor?
 

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Discussion Starter #3
yep but if it fails the fan should stay on all the time as well as unplugging the fan should stay on all the time and it never says HOT im pretty sure the problem is deeper
 

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Right, I forgot they "fail safe"
 

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Sounds like you have a lot of electrical gremlins, Im gonna guess you have PDM problems, the pdm controls fan on efi machines.
 

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Discussion Starter #6
correct me if im wrong but dont efi machines have an ecm, carbed models have a pdm, its seaming more and more like my ecm is fried i made it so my fan would stay on when disconnected it was a crappy connection at the battery
 
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