Hey guys I got a ??? about fans & there relays?If I start my car the fan will turn on right away even if it cold.I've tried to replace the relay the one next to the battery & fan,but it didn't seem to do anything.I was wondering if there were numerious relays & or fuses that control the fan.Any help or suggestions would be helpful.It's an 86 iroc w/single fan w/350tpi.While i'm at it I rigged up a switch for the time being & disconnected the relay just till I figure this thing out.

 

have you tried switching to a stock prom? i had a couple proms around here and an 86 vette prom in my 89 made the fans come on right away and locked the tq converter in 2nd gear. with a proper 89 prom i dont have that problem.

otherwise something is grounded, maybe the fan switch went bad.

 

no I actually sold my stock prom I wish I kept it though.I wasn't sure if there were numerious relays or anything else I could check.This happens to be a real pain in the A**.Thanks for the advise though.At least I have a toggle for the time being.

 

i use a combination toggle and back up system. if i forget to flip the toggle the system will still turn on but only at about 240 or so. my toggle switches on both fans at once and works great for cooling the car off. i only need it when stopped at long red lights. if i started prom tuning i could lower that back up turn on a llot.

 

i had the same problem on my car, the passengers fan would stay on all the time when the car was turned on, i went through my electronics for the dual fan setup and found out that the fanswitch (in the passengers side block 6/8 cyclinders) was burnt up and grounded itself so it ground the relay and thus the fan was turned on...

i put a new fanswitch and a new connector in and all is well..