No Heat while driving?.... - 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 01-21-2007, 11:16 PM   #1
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Dec 2006
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
rizergt is on a distinguished road
Default No Heat while driving?....

hey guys, just trying to figure this out so i can get it fixed.
My problem is lack of heat. When idling the car will warm up to roughly 200-220 degree'* and the car will blow warm air. However when i start driving the car the temperature goes down to 100-120 and it stops blowing warm air.

Is this due to the termostat which would also assist in the terrible gas mileage? (150 miles on first half, 70 miles on last half)
rizergt is offline   Reply With Quote
Old 01-21-2007, 11:18 PM   #2
Senior Member
Certified Car Nut
 
Join Date: Mar 2003
Posts: 12,432
Thanks: 0
Thanked 0 Times in 0 Posts
J Wikoff is on a distinguished road
Default

Sounds to me like the thermo is stuck open. They're cheap.

It would help with gas mileage by a handfull of MPGs if that'* the problem and you fix it. When it'* below the thermo temp, the PCM sends more fuel to try to warm it up.
J Wikoff is offline   Reply With Quote
Old 01-21-2007, 11:22 PM   #3
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Dec 2006
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
rizergt is on a distinguished road
Default

Is it easy changing by yourself or just have the dealership do it? it would cost me around 70 bucks to have the dealer do it (I work at one)
rizergt is offline   Reply With Quote
Old 01-21-2007, 11:45 PM   #4
Junior Member
 
Join Date: Aug 2005
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
wjcollier07 is on a distinguished road
Default

Definitely an open stat. They are realatively easy to change.
wjcollier07 is offline   Reply With Quote
Old 01-22-2007, 08:28 AM   #5
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Depending on your mechanical ability and which model/year you have it'* considered a snap.

The basic procedure is on a cool/cold car, drain off some coolant. Remove two bolts holding thermostat housing to the lower intake manifold. Clean gasket surfaces and remove old stat. Put in new stat, taking into consideration the filling procedure outlined in Techinfo, reassemble and enjoy the heat.
BillBoost37 is offline   Reply With Quote
Old 01-22-2007, 09:58 AM   #6
Senior Member
True Car Nut
 
Join Date: Mar 2004
Location: Ames, Iowa
Posts: 3,066
Thanks: 0
Thanked 1 Time in 1 Post
bill buttermore is on a distinguished road
Default

rizer, welcome to Bonneville Club. Please put the year and model of your car in your signature so we can help you with more accurate information.
I agree that your symptoms are consistent with a thermostat that is sticking partially open. However, your symptoms could also be caused by low coolant. With the engine cold, open the radiator cap - it should be full to the top. If not, you need to find the leak to make sure your problem isn't much bigger than no heat.
bill buttermore is offline   Reply With Quote
Old 01-22-2007, 11:40 AM   #7
Senior Member
True Car Nut
 
Join Date: May 2005
Location: _Phoenix, AZ_ _WCBF '05, '06, '07 Survivor_ ____NEBF '07 Remnant___
Posts: 3,448
Thanks: 0
Thanked 0 Times in 0 Posts
Echo SSEI is on a distinguished road
Default

Welcome back, Chris.

If you want to save some $, I know you could change it yourself. If you want a hand or want to do it at my house, let me know.

Shouldn't take too long, if your radiator petcock will open to drain some coolant. If not, then you need to remove some coolant by a little more time consuming means.

T-stat is under $10. You may need to pick up a paper gasket if the stat you get doesn't come with one.
Echo SSEI is offline   Reply With Quote
Old 01-22-2007, 11:44 AM   #8
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Stat won't come with the paper gasket.

And draining from the petcock takes me longer than the vacuum hose trick.

Thermostat
Rubber T stat gasket
Paper water outlet gasket

Chris..take Bob up on the offer..he'll even show you his cool hose clamp tool
BillBoost37 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Runs hot - no heat - then temp drops and heat works?? atp 2000-2005 15 12-16-2009 07:46 AM
driving lights off while driving 99bonne Audio (and aftermarket electronics) 2 01-25-2008 02:30 AM
car dies while driving then wont start for a while..? help 88bonnsse 1987-1991 23 05-29-2007 10:30 PM
Heat blowing cold + flashing heat controls after 20 sec chilump 1992-1999 23 02-08-2007 11:48 AM
Anyone here heat with oil heat? I have questions? h1081dan Lounge 3 11-14-2004 05:22 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 12:36 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.