cooling problem
Thread Starter
Junior Member
Joined: Feb 2011
Posts: 10
Likes: 0
From: Fort Lewis, WA
Car: 1985 Trans am/1999 TT vette
Engine: 305/LS2
Transmission: 700R4/T56
Axle/Gears: stock
cooling problem
hey guys. new to this site. i just picked up an 85 TA. LB9. it overheats around town. stay right in the 220 range on the highway.
thermostat is opening. lower hose isn't collapsed. fluid level is ok. air damn is intact. nothing blocking the radiator.
is it safe to assume the fan is the issue (electric fan)? is this a common issue?
thermostat is opening. lower hose isn't collapsed. fluid level is ok. air damn is intact. nothing blocking the radiator.
is it safe to assume the fan is the issue (electric fan)? is this a common issue?
Senior Member
Joined: Feb 2009
Posts: 615
Likes: 0
From: Toledo, Ohio
Car: 91' bird(WS6>>305TBI), 82'Regal
Re: cooling problem
Senior Member
Joined: Feb 2009
Posts: 615
Likes: 0
From: Toledo, Ohio
Car: 91' bird(WS6>>305TBI), 82'Regal
Re: cooling problem
I have changed both of mine but that was a year ago and forget. But I believe one is called the "coolant temp sensor" and the other is called the "coolant temp switch" Try direct wiring your fan to the bat. if it comes on then it should be your sensor........
Joined: Aug 2009
Posts: 1,821
Likes: 40
From: Central California
Car: 92 Camaro RS
Engine: LO3
Transmission: T5
Axle/Gears: stock
Re: cooling problem
When sitting in the driveway idling, does the fan come on when you turn on the AC? If so then at least you know the fan and relay are OK
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Senior Member
Joined: Mar 2006
Posts: 926
Likes: 1
From: CALI
Car: 85' Trans Am !best car ever!
Engine: 305tpi 215hp LB9 two bolt,
Transmission: th-700r4
Axle/Gears: stock (3.27)
Re: cooling problem
just a replacement fan is fine. rockauto.com might have what you need. if its just the fan motor not the fan you can go to autozone and pick a motor up. also check under your car for the black air scoop for your car
Joined: Aug 2009
Posts: 1,821
Likes: 40
From: Central California
Car: 92 Camaro RS
Engine: LO3
Transmission: T5
Axle/Gears: stock
Re: cooling problem
If the fan didn't go on with the AC, the fan may still not be the problem. Could be the relay or wiring. Make sure you test by putting 12 volts to the two motor contacts before you just replace it.
Senior Member
Joined: Mar 2006
Posts: 926
Likes: 1
From: CALI
Car: 85' Trans Am !best car ever!
Engine: 305tpi 215hp LB9 two bolt,
Transmission: th-700r4
Axle/Gears: stock (3.27)
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