I have been reading about the operation of the dual fan set up like I have on my 87 GTA. The last owner of this car wired each fan to two toggle switches. When I bought the car only one toggle worked the primary (driver side) fan and the passenger side did not work with the switch. I purchased a new lighted toggle to replace the old one which appeared to be bad. I flip the toggle and it lights up but that passenger side fan still doesn't come on. I looked under the hood and it looks to be all wired up. Is there a fuse for that side alone or something alas I might check? My car has the digital dash and the temp gauge is pretty much always at about 210-220 cruising around town or freeway. Is that normal? There is no detonation or anything.

 

The pass side fan is switched through ground via the sensor in your pass side head.

 

My dual fans come on as soon as the car is started. Not sure for how long, I added a radiator probe to it last summer. Recently used a paper clip to check engine codes, noticed that when I inserted the paper clip into the Computer Command Control Center (terminals A & B), turned the ignition to ON position (without starting). To clear the codes, I unhooked the ECM electrical pigtail at the positive battery cable. Codes cleared, but now when I start the car the dual fans come on right away. I have a 1989 5.7 liter 350 TPI engine.......any help would be appreciated.