Car 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 10-20-2007, 10:20 PM   #1
Senior Member
Posts like a Camaro
Thread Starter
 
Join Date: Aug 2004
Location: Chi-Town
Posts: 1,116
Thanks: 0
Thanked 0 Times in 0 Posts
Boreas is on a distinguished road
Default Car running hot.

I was driving the 96 SSEi on the highway today and noticed that the engine temperature easily went up to and past 200 F. I think I stopped at 3 stoplights, not really close to each other, and when I stopped at the third it went to the first tick after 200. This is unusual since my 93 is running COOL, and it was only 75 degrees out. The A/C was off and my coolant is full. Advice?
Boreas is offline   Reply With Quote
Old 10-21-2007, 03:11 AM   #2
Senior Member
True Car Nut
 
Join Date: Feb 2006
Location: Melrose
Posts: 4,596
Thanks: 0
Thanked 0 Times in 0 Posts
BLACK94SSEi is on a distinguished road
Default

When was the last time you changed your thermostat, and what temperature rating is it?
BLACK94SSEi is offline   Reply With Quote
Old 10-21-2007, 11:29 AM   #3
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
Default

Looks like a drilled 180 to me.

Try turning your AC on next time to force the fans on. See what temp it holds at on the same drive (same weather too).
willwren is offline   Reply With Quote
Old 10-21-2007, 12:39 PM   #4
BANNED
 
Join Date: Aug 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
banned3800 is on a distinguished road
Default

Also Pull the Radiator cover and clean the Radiator Fins with water, there may be some dirt trapped in there impeding air flow to the radiator...

Also everyone keep in mind that the 96-99 SC Bonnies Not so friendly Thin core radiator

__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
banned3800 is offline   Reply With Quote
Old 10-21-2007, 12:42 PM   #5
Senior Member
Certified GM nut
 
Join Date: Oct 2006
Location: burb of detroit. 2 miles north of 8 mile Rd.
Posts: 2,028
Thanks: 0
Thanked 0 Times in 0 Posts
samueljackson is on a distinguished road
Default

so, it cools when moving, then heats up when you stop?

i would check to see if the fans are engaging.
samueljackson is offline   Reply With Quote
Old 10-21-2007, 02:49 PM   #6
Senior Member
Posts like a Camaro
Thread Starter
 
Join Date: Aug 2004
Location: Chi-Town
Posts: 1,116
Thanks: 0
Thanked 0 Times in 0 Posts
Boreas is on a distinguished road
Default

Forgot to mention, I do have a 180 degree drilled thermostat. Coolant was changed last year in July, so I sill have about another year on the fluid. Radiator was hosed down a couple of months ago.

The engine only kept cool when I turned on the A/C, it went down just a little bit below 200. Im wondering if my water pump is going out since its still original.
Boreas is offline   Reply With Quote
Old 10-21-2007, 03:17 PM   #7
BANNED
 
Join Date: Aug 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
banned3800 is on a distinguished road
Default

Its Possible... But with the Thinner radiator the car can heat up a bit..

My Car had the Radiator on the bottom... I replaced it with the unit on the top..
Your car has the unit on the bottom, unless it has already been replaced.. Cooling ability is not great with this radiator and an SC engine... You will notice it heating up depending on the situation.. Also part of the reason some do the Fan Override...


__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
banned3800 is offline   Reply With Quote
Old 10-21-2007, 08:57 PM   #8
Member
Posts like a V-Tak
 
LondonOntMan's Avatar
 
Join Date: Oct 2007
Location: London, Ontario, Canada
Posts: 36
Thanks: 0
Thanked 0 Times in 0 Posts
LondonOntMan is on a distinguished road
Default

I hope you dont mind me putting my 2 cents worth in here. I thought I was having a problem with my car running to hot. I run a 198 degree stat in mine and noticed the fans were not kicking on. They came on only when A/C on. I hooked up my MODIS and after some detective work discovered that GM cars run hot normally. My fans come on at 105 celsius (221F).
LondonOntMan is offline   Reply With Quote
Old 10-21-2007, 09:16 PM   #9
BANNED
 
Join Date: Aug 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
banned3800 is on a distinguished road
Default

We do know that GM has it set so that the fans come on at 220ish...

He has a 180F thermostat, and in the cooler weather he'* starting to have it should be harder to heat up so quick...

I live in FL and hardly ever see 200F as I run a 180F thermostat and a Heavy Duty Radiator..

The Fan turn on can also be changed for him.. But we want to make sure the radiator is able to flow air through it to be able to cool off..

This also is not the first time we have seen these issues with the stock radiator, Some have gone to a larger radiator for this very reason..

Through 1995, if you had an SC Bonneville you got Heavy Duty Cooling, which included a beefy 1.25" cooling core as well as an oil cooler and a AUX tranny cooler.... Later years had neither and came with the standard core radiator..

__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
banned3800 is offline   Reply With Quote
Old 10-21-2007, 11:33 PM   #10
Senior Member
Posts like a Camaro
Thread Starter
 
Join Date: Aug 2004
Location: Chi-Town
Posts: 1,116
Thanks: 0
Thanked 0 Times in 0 Posts
Boreas is on a distinguished road
Default

Quote:
Originally Posted by jr's3800
He has a 180F thermostat, and in the cooler weather he'* starting to have it should be harder to heat up so quick...
Draping half of the radiator with a towel helps. Kinda like how they put a vinyl cover over the radiator of semi'* and leave the center opened.

Looks like its normal for my car considering that radiator. Id install an override switch but id need a more permanent solution (moms not gonna know when to turn it on ), and moneys' short. Its less than a year before I graduate from college, hence (hopefully) less than a year before I get my first paycheck, therefore less than a year before I can do anything major to the car like a thicker radiator which I have been eying.

Id like to bring up another thing if I may: I've spun my pulleys and the water pump seems to spin freely, though "stepping" like when you spin an electric motor. I did notice however that my tensioner pulley doesn't spin freely, I feel slight resistance, yet its only 20k old. Is that normal?

Sorry for long post but I love to talk alot.
Boreas 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
Feelin Hot Hot Hot LittleHoov General GM Chat 10 08-07-2003 01:41 PM
Car running hot kerker 1992-1999 17 03-15-2003 02:22 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 01:42 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.