Hello,My 87 gtas fans have been stuck on since the day I got it.Ive replaced the fan relays(both)with new connections,fan switch,ecm and chip.I also had the entire wireing harness out of the car and checked every single wire with testor and all was good.If anyone can help it would be great,thanks.

 

Both of the fan sensors replaced? (There's two of them) There's a two pin sensor under the throttle body (in the intake manifold) and a single pin sensor on the right-side (passenger side) head. The two-pin sensor causes what you're experiencing...

 

I replaced both but I guess one could have been a dud,Ill get another and see what happens.Thanks for the reply.

 

also check the wiring close to the relay and the fan switch.I have heard of people grounding out the switch to make both fans work.
If all is good there,I'd check into the ecm.

 

hey my fans were grounded out and the fans came on as soon as i turned the ignition and idk how to remove it idk which ground it is

 

Try running 12v directly to the fans, if they dont come on then, its probably the motor. But since both of them arent working I would think its probably some electrical problem. But its worth checking in the unlikely case both the fan motors are bad.