new member!fan problems
07-15-2012, 06:51 PM
#1
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Car: 1985 iroc-z28
Engine: 305 t.p.i
Transmission: 700r4
Axle/Gears: 3.42
new member!fan problems
hello!fellow thirg gen owners.new to this forum and asking for help.im a proud owner of a 1985 iroc z28 305 tpi.just got the car about two months ago all stock with 96,000 original miles and im having issues with the radiator fan.when i got the car the fan would come on as soon as i turned the key and now it does not come on even when the car is on and running.i have replaced the relay and no answer.could it be the temp sensor or the fan motor?also the car has no a/c.any help would be really appreciated.thanks!
07-15-2012, 08:42 PM
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Car: 91 TA WS6
Engine: L98
Transmission: Auto :(
Re: new member!fan problems
Someone will correct me if I am wrong, but usually the fans on these cars are controlled by a sensor on the block and I believe the stock one is around 200 degrees to turn on. This question might be better answered in the cooling section of the forum.
07-15-2012, 08:43 PM
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Car: 89 IROC Z28
Engine: 357 TPI
Transmission: 700R4
Axle/Gears: 3.42 Posi
Re: new member!fan problems
Do you have 1 or 2 fans?
To see if it's the fan motor, you can jump the relay if doesn't run check the contacts at the fan if it still won't run it's the motor.
To see if it's the fan motor, you can jump the relay if doesn't run check the contacts at the fan if it still won't run it's the motor.
07-16-2012, 07:50 AM
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Car: 09 GSXR/88 iroc/91 RS B4C
Engine: 600cc/l5.7/5.7
Transmission: 6 speed/TH 350/auto
Axle/Gears: 45tooth rear?/3.23/3.42
Re: new member!fan problems
also check the wire plug as the fan temp switch located on the passenger side head as stated, sometimes they fray, or the plug breaks due to the ehxuast heat. might be a goo idea to replace temp switch anyways with a cooler on/off setting. stock i believe is 225 on.
07-17-2012, 01:59 PM
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Car: 1985 iroc-z28
Engine: 305 t.p.i
Transmission: 700r4
Axle/Gears: 3.42
Re: new member!fan problems
its a single fan and after attempting to jump the relay found out it was the fan motor after all.thanks for your help guys! now seeking some advise.as you know this is a stock 305 tpi would it be worth beefing this up or ride it for a wile and if its possible drop a 350 later.thanks again!!
07-26-2012, 12:26 PM
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Car: 89 GTA
Engine: 6.0L Procharged
Transmission: T-56
Axle/Gears: 4.10
Re: new member!fan problems
Wait till you need to rebuild it then go 350. The only thing I'd do to a 305 is chip it IMO.
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