Running Hot - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 05-30-2011, 12:07 AM   #1
Junior Member
Thread Starter
 
Join Date: May 2011
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
jwil736 is on a distinguished road
Default Running Hot

I have a 96' Grand Prix 3.1L SE. It runs hot when idle or in stop and go traffic. It has brand new water pump, coolant, and now engine collant temp sensor (gauge). Fan #2 (passenger side) isnt turning on. The relay is good and when you jump pos and neg posts in fuse panel it turns on.

EDIT: Temp is 240 when I say running hot
jwil736 is offline   Reply With Quote
Old 05-30-2011, 12:10 AM   #2
Senior Member
True Car Nut
 
xtremerevolution's Avatar
 
Join Date: Jun 2007
Location: New Lenox, IL
Posts: 2,478
Thanks: 0
Thanked 0 Times in 0 Posts
xtremerevolution is on a distinguished road
Default

Quote:
Originally Posted by jwil736 View Post
I have a 96' Grand Prix 3.1L SE. It runs hot when idle or in stop and go traffic. It has brand new water pump, coolant, and now engine collant temp sensor (gauge). Fan #2 (passenger side) isnt turning on. The relay is good and when you jump pos and neg posts in fuse panel it turns on.

EDIT: Temp is 240 when I say running hot
Check the wiring and make sure its good. The wiring tends to short right under that fusebox on the passenger side.

The second fan doesn't turn on till the engine gets pretty hot. Does it turn on when you turn the AC on?

Sounds like you may either have a stuck thermostat or bubbles in the cooling system. How did you bleed the air bubbles?
xtremerevolution is offline   Reply With Quote
Old 05-30-2011, 12:20 AM   #3
Junior Member
Thread Starter
 
Join Date: May 2011
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
jwil736 is on a distinguished road
Default

The wiring is good, the fan motor is good. Bled the system through the 2 bleeders. Im thinking its whatever is supposed to tell Fan #2 relay to turn on because when you jump it with needle nose pliers in the fuse box, it turns on. It does not turn on when a/c is on.
jwil736 is offline   Reply With Quote
Old 05-30-2011, 12:43 AM   #4
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

Fan #1 turns on around 212*, fan #2 turns on around 226* Your ECT sensor may not be reading right.
Danthurs is offline   Reply With Quote
Old 05-30-2011, 12:45 AM   #5
Junior Member
Thread Starter
 
Join Date: May 2011
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
jwil736 is on a distinguished road
Default

I replaced the ECT sensor, then shortly after found out there were 2 and I replaced the gauge one.
jwil736 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
reading hot but not running hot Lilrhodycummins 1992-1999 5 11-05-2007 02:55 PM
hot hot hot jhill52788 1992-1999 2 07-07-2007 06:18 PM
HOT HOT HOT! BonneMeMN Lounge 22 06-25-2005 12:46 AM
How hot is too hot? egladman 1992-1999 12 07-19-2004 12:42 AM
Feelin Hot Hot Hot LittleHoov General GM Chat 10 08-07-2003 01:41 PM


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 02:40 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 Amazon.com and affiliated sites.