2004 nissan altima sl 2.5 4/cylinder a/c fan and engine cooling fan will not come on unless you lightly spin one of the fans to get them started - why ?
fans are not locked up tight or any thing of that matter. they turn fine spin freely.they just
woulnt come on by thereself . is that the fans going bad ? i think it is highly unusual for
both to go bad at the same time. could it possible be the relay switch ? do they both run
of the same switch? need to fix asap before wife over heats car and destroys the engine !
sounds like the fans themselves are going bad. try hooking one up directly to the battery and see if it starts right up. if they start when you spin them, then they are still getting power. sounds like the fan motors themselves are freaking out. the whole spinning them and then they start thing is weird. usually a cooling fan issue is either a coolant temp sensor, a fuse/relay, or a pcm signal problem.
I agree with Mark, fan motors are nothing but a turning circuit of magnetic wiring around a core with brushes, most of the time they just get worn, so just replace the motors with aftermarket motors and you are on your way.
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