| Problem Diagnosis Got a problem you can't fix? Post here and one of our members will answer as soon as possible. |
07-29-2007, 09:28 PM
|
#1
|
|
AF Regular
Join Date: Feb 2005
Location: Tifton, Georgia
Posts: 194
|
Do I need to replace the thermostat?
I may have mentioned this before, but my S10 takes a long time to warm up. Even in the summer, when I crank up, if it's been 24 hours since I last ran it I have to let it run a minute or so to get the oil thinned so it will shift good, and that's in the SUMMER!!!
In the winter, I can start it and let it warm up for about 5 minutes or so, and then when I start driving it, it STILL takes awhile before the heater will blow out warm air. Once it does warm up, it stays at around 200 degrees F., and it blows hot air, it just takes freakin' forever to get there. Could the thermostat be worn out?
|
|
|
|
07-30-2007, 09:34 PM
|
#2
|
|
AF Newbie
Join Date: Jul 2007
Location: Chicago, Illinois
Posts: 34
|
Re: Do I need to replace the thermostat?
Quote:
|
Originally Posted by Ducaire
I may have mentioned this before, but my S10 takes a long time to warm up. Even in the summer, when I crank up, if it's been 24 hours since I last ran it I have to let it run a minute or so to get the oil thinned so it will shift good, and that's in the SUMMER!!!
In the winter, I can start it and let it warm up for about 5 minutes or so, and then when I start driving it, it STILL takes awhile before the heater will blow out warm air. Once it does warm up, it stays at around 200 degrees F., and it blows hot air, it just takes freakin' forever to get there. Could the thermostat be worn out?
|
Ducaire,
Yes, the thermostat is almost certainly stuck open and should be cheap and easy to change.
|
|
|
|
|
07-31-2007, 11:15 AM
|
#3
|
|
AF Regular
Join Date: Feb 2005
Location: Tifton, Georgia
Posts: 194
|
Re: Do I need to replace the thermostat?
Great. The normal temperature will still be at 200 F., won't it? Is there a certain type of thermostat I have to buy? Or will that not make a difference?
Thanks. 
|
|
|
|
|
07-31-2007, 08:41 PM
|
#4
|
|
GM S-Series Mod
Join Date: Aug 2005
Location: Westminster, Maryland
Posts: 2,609
|
Re: Do I need to replace the thermostat?
no special one needed but get one that is a 195 degree. make sure when you install it, it is flush in the housing and that the o-ring goes on top of the stat.
__________________
2000 Chevy Blazer ZR2 
Performance: AEM intake, TB mod, ported stock y-pipe w/precat deleted, 3in catco cat, 2.5in Flowmaster 40 DF,
March pulleys, MSD SF ignition, Taylor 8.2 wires, Transgo shift kit, Corvette servos, B&M trans cooler.
Suspension: Knaffle 1.5in lift shackles, 1.25in rear wheel spacers, 31in BFG AT's
Exterior: custom ZR2 decals, bug guard, vent visors
Interior: Lanzar headunit w/ ipod input, Pioneer speakers, Scanguage II
http://www.cardomain.com/ride/3013891
|
|
|
|
|
07-31-2007, 09:03 PM
|
#5
|
|
AF Enthusiast
Join Date: Apr 2005
Location: Peabody, Massachusetts
Posts: 947
|
Re: Do I need to replace the thermostat?
Yup a new thermostat will help your issue but for the extra few dollars I would also replace the radiator cap. Post your results
__________________
2002 Pontiac Gram Am
K&N Air Filter
Mobil1 5W-30 Extended 15K
2 JL Audio 12" Subs Sealed JL Audio Box
Coustic 400 Watt Class D Mono Amp
Pioneer Head Unit 50X4 MP3, WMA, AAC Super Tuner
Polk DB750 6.5" all around
Yankees Suck!!!!!!!!
|
|
|
|
|
08-01-2007, 02:02 PM
|
#6
|
|
AF Enthusiast
Join Date: Dec 2003
Location: Deep Dark Doo-doo
Posts: 942
|
Re: Do I need to replace the thermostat?
Quote:
|
Originally Posted by ZL1power69
no special one needed but get one that is a 195 degree. make sure when you install it, it is flush in the housing and that the o-ring goes on top of the stat.
|
Just as a point of order, my experience is that the rubber gaskets are round (obviously) with a slit that goes around the inside of the gasket and forms a tight "U" shape which fits over the round plate of the thermostat. In other words, the gasket, when installed on the thermostat is actually ABOVE AND BELOW the T-Stat plate because the T-Stat is inside the groove of the gasket. I know there are different styles, but I just wanted to add my 
Oh and BTW, using this style of gasket, eliminated the need for Perma-tex or any other type of gasket sealer. Just make sure both the housing and the block are clean and free of any crud (old gasket etc.) before installing the new one.
__________________
"IF EVERYBODY IS THINKING ALIKE, THEN NOBODY IS THINKING"! - Gen George S. Patton Jr.
Last edited by Rick Norwood; 08-01-2007 at 05:16 PM.
|
|
|
|
|
08-01-2007, 06:17 PM
|
#7
|
|
Advisor/Moderator
Join Date: Nov 2005
Location: Belleville, Michigan
Posts: 2,963
|
Re: Do I need to replace the thermostat?
Newer 4.3's use that design, however, Ducaire has a 1990 which uses the old style thermostat and gasket for all four engine options.
|
|
|
|
|
