Coolant fan wont turn on.
04-25-2010, 09:58 AM
#1
Member
Thread Starter
Join Date: Jan 2010
Location: Pasadena, TX
Posts: 314
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Formula
Engine: 350TBI
Transmission: 700r4
Axle/Gears: 2.73
Coolant fan wont turn on.
I got a 1991 firebird v8. It overheated on me so i checked the relay. well i found out that it went out. So i replaced it and the fan still wont turn on. What temp should the fan turn on? because i drove it till the temp was about 200 and checked it but no luck.
04-25-2010, 04:20 PM
#2
Supreme Member
iTrader: (3)
Join Date: Jan 2004
Location: Las Vegas
Posts: 2,716
Likes: 0
Received 252 Likes
on
188 Posts
Car: 1987 Formula (original owner)
Engine: 305 TPI
Transmission: T5
Axle/Gears: 9-bolt/3.45
Re: Coolant fan wont turn on.
The fan should turn-on when the temperature is in the 220* range, assuming all is still set-up stock. Then it should turn-off when the temp gets down to the 195* range. I always say "range" because temperature-readings can vary from sensor-to-sensor, gage-to-gage, etc.
04-30-2010, 12:15 AM
#4
Supreme Member
Join Date: Apr 2006
Location: Northern, CA
Posts: 4,482
Likes: 0
Received 9 Likes
on
9 Posts
Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: Coolant fan wont turn on.
Are you referring to a Coolant (Thermal) Fan Switch ? If so I have found three at Kragens. They have different turn on temperatures.
Part # TFS8 turns on at 220 off at 204
# TFS4 turns on at 227 off at 211
# TFS1 turns on at 238 off at 222
It dosnt say so on there web site but if you call them and tell them the part # for the Thermal fan switch they should be able to pull the actual temputare ranges up for you .Thats what I did and am running the 220 on switch. PS. The prices for the lower temp. switches are alot higher than the stock ones were used to.
Part # TFS8 turns on at 220 off at 204
# TFS4 turns on at 227 off at 211
# TFS1 turns on at 238 off at 222
It dosnt say so on there web site but if you call them and tell them the part # for the Thermal fan switch they should be able to pull the actual temputare ranges up for you .Thats what I did and am running the 220 on switch. PS. The prices for the lower temp. switches are alot higher than the stock ones were used to.
Last edited by Ron U.S.M.C.; 06-11-2010 at 06:52 PM. Reason: add info.
Thread
Thread Starter
Forum
Replies
Last Post
Fronzizzle
Suspension and Chassis
6
03-18-2019 08:29 PM
eightsixseven
Tech / General Engine
1
08-14-2015 03:09 PM
db057
TBI
10
08-11-2015 10:11 PM
