cooling fan question - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

General GM Chat When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made. Chat about all things GM (and related cars). Off-topic stuff should be in the Lounge, and all Model specific mechanical problems should be posted in the proper forum.

Thread Tools Search this Thread
Old 07-07-2003, 10:00 PM   #1
Senior Member
Posts like a Northstar
Thread Starter
Join Date: Sep 2002
Location: Riverton, Wyoming
Posts: 740
Thanks: 0
Thanked 0 Times in 0 Posts
egladman is on a distinguished road
Default cooling fan question

Ok I have a question concering the the electric cooling fan on my car. Does the fan automatically kick on anytime the automatic climate control is set. I know it runs quite a bit in the summer but I was just wondering if it kicks on in the winter as long as the auto function on the climate control is set.
egladman is offline   Reply With Quote
Old 07-07-2003, 10:37 PM   #2
Junior Member
Posts like a Ricer Type-R
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road

Not sure about the earlier generation, but on my car, they both come on low speed at a preset temp by the PCM. When I turn my climate control to Auto, they both come on High speed, regardless of outside temp.
willwren is offline   Reply With Quote
Old 07-08-2003, 12:03 AM   #3
Senior Member
True Car Nut
Join Date: Sep 2002
Posts: 3,392
Thanks: 0
Thanked 0 Times in 0 Posts
fuddyduddy121 is on a distinguished road

On the 93, the high side pressure on the A/C must be above a certain level.

Here'* what happens in the 93:

The PCM monitors the coolant temperature. When the coolant temperature reaches 212 degrees, it switches on the fans to low speed. If the coolant temperature reaches 226 degrees, the fans operate at high speed.

Also, when the A/C high side reaches 210 psi, this causes the high speed fans to run. They should run for a few minutes. That may be slightly different for the R-134a systems.
fuddyduddy121 is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
hotwire a cooling fan!?! bigtjohnson 1992-1999 6 10-02-2003 11:56 AM
Cooling fan Recalibration Jim W 1992-1999 18 08-13-2003 07:58 PM
Cooling Fan Problem MisLeD YoUtH 1992-1999 11 07-24-2003 07:30 PM
low & high speed cooling fan tests? billha 1992-1999 15 07-18-2003 09:33 PM
Cooling fan Phantom 1992-1999 1 01-27-2003 12:16 AM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -4. The time now is 11:29 AM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.