Cooling fans on at highway speed question
Thread Starter
Joined: Jul 2005
Posts: 28
Likes: 2
From: Montreal
Car: 92 Formula
Engine: 350 TPI
Transmission: BW 5 Speed
Cooling fans on at highway speed question
I have 1988 Trans Am with a 305 TPI motor......Am running a stock 195 thermostat.....put in a SW555 secondary fan switch and now the car runs much cooler in traffic.....my only concern is that the fans now stay on too long?.......is there an automatic shut off in the car for the fans once the vehicule reaches highway speeds?......or will I have to install another secondary switch or install a 180 Degree thermostat?....Thanks
Joined: Dec 2004
Posts: 16,774
Likes: 1,002
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Cooling fans on at highway speed question
Only the primary fan is ecm controlled on/off based on temp. Off at 35mph unless over 228f.
Supreme Member
Joined: Feb 2021
Posts: 1,209
Likes: 449
From: WA
Car: 1989 IROC-Z
Engine: L98 350 TPI
Transmission: 700R4
Axle/Gears: BW 9 Bolt / 2.77 Posi
Re: Cooling fans on at highway speed question
What is too long, and why is that causing a problem? Just trying to get to the root of the problem here, as it would seem your setup is working as intended.
Thread Starter
Joined: Jul 2005
Posts: 28
Likes: 2
From: Montreal
Car: 92 Formula
Engine: 350 TPI
Transmission: BW 5 Speed
Re: Cooling fans on at highway speed question
It is working well except the cooling fans are not turning off ..Don't like the idea of driving on the highway with a fan on...I think that the "off" point for the secondary switch must be well below 195 Degrees.....and this 195 thermostat doesn't allow the engine to go below that temp...I'll try a 180 thermostat ....Thanks
Thread
Thread Starter
Forum
Replies
Last Post