t stat - 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.

Reply
 
 
 
Thread Tools Search this Thread
Old 07-07-2010, 04:31 PM   #1
Senior Member

True Car Nut
Thread Starter
 
sseidriver97's Avatar
 
Join Date: Mar 2010
Location: Portage mi
Posts: 7,124
Thanked 3 Times in 3 Posts
sseidriver97 is on a distinguished road
Default t stat

my car must have a 220 stat cause thats where it runs in the city but stays bout 200 while moving anyways im thinkng would it b better to go with a 160 or a 180 stat for my 97 ssei? just for the summer and ill go back to a 195 for the winter?
sseidriver97 is offline   Reply With Quote
Old 07-07-2010, 04:34 PM   #2
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

Your car has a 195, but the fans dont turn on until over 200. So changing stats wont do much in the city. I don't suggest a 160 unless you chnage the tune. You can do a 180 with no problems.
Danthurs is offline   Reply With Quote
Old 07-07-2010, 04:35 PM   #3
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 sseidriver97 View Post
my car must have a 220 stat cause thats where it runs in the city but stays bout 200 while moving anyways im thinkng would it b better to go with a 160 or a 180 stat for my 97 ssei? just for the summer and ill go back to a 195 for the winter?
Your thermostat is a 195. Your fans aren't supposed to kick in till around 220 or 225, I forget which, which is why it never goes above that point. Getting a lower temperature t-stat in there will not help anything, just have your engine running cooler while cruising or moving faster.

If you want to have your car stay cooler, have someone tune your PCM to have the fans kick on at a lower temperature, or get an auxiliary fan installed that stays on all the time.
xtremerevolution is offline   Reply With Quote
Old 07-07-2010, 09:51 PM   #4
Senior Member
Posts like a Supercharger
 
mike9fore's Avatar
 
Join Date: Mar 2010
Location: Beltsville,MD
Posts: 181
Thanks: 0
Thanked 0 Times in 0 Posts
mike9fore is on a distinguished road
Default

Quote:
Originally Posted by xtremerevolution View Post
Your thermostat is a 195. Your fans aren't supposed to kick in till around 220 or 225, I forget which, which is why it never goes above that point. Getting a lower temperature t-stat in there will not help anything, just have your engine running cooler while cruising or moving faster.

If you want to have your car stay cooler, have someone tune your PCM to have the fans kick on at a lower temperature, or get an auxiliary fan installed that stays on all the time.
While we are on that topic....can I use the Tech II and lower the temp. when the fans kick on?
mike9fore is offline   Reply With Quote
Old 07-07-2010, 10:21 PM   #5
Senior Member

True Car Nut
Thread Starter
 
sseidriver97's Avatar
 
Join Date: Mar 2010
Location: Portage mi
Posts: 7,124
Thanked 3 Times in 3 Posts
sseidriver97 is on a distinguished road
Default

Who near me can do that does. Anybody know
sseidriver97 is offline   Reply With Quote
Old 07-08-2010, 11:11 AM   #6
Administratus Emeritus
Certified Car Nut
 
GXP Venom's Avatar
 
Join Date: Jan 2006
Location: Purgatory, Pennsylvania
Posts: 16,538
Thanked 7 Times in 4 Posts
GXP Venom is on a distinguished road
Default

Different Dealer Techs have told me, so I assume it'* valid; Several PCM settings/parameters are set to make the car run at 200. That is the design and altering one just makes others work harder trying to make it so. Unless you going heavy mod, IMO, leave it alone. It was made to run @ 200 and shouldn't be a problem if there aren't other ones present. (Old leaking seals, clogged radiator, etc.)
GXP Venom is offline   Reply With Quote
Old 07-08-2010, 11:16 AM   #7
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 GXP Venom View Post
Different Dealer Techs have told me, so I assume it'* valid; Several PCM settings/parameters are set to make the car run at 200. That is the design and altering one just makes others work harder trying to make it so. Unless you going heavy mod, IMO, leave it alone. It was made to run @ 200 and shouldn't be a problem if there aren't other ones present. (Old leaking seals, clogged radiator, etc.)
I think that'* particularly true only for the GXP or for later models. I know for a fact my 95 Regal will creep up to 220/225 before the fans will kick in, taking it down to 195, even with a 180 t-stat.
xtremerevolution is offline   Reply With Quote
Old 07-08-2010, 11:21 AM   #8
Administratus Emeritus
Certified Car Nut
 
GXP Venom's Avatar
 
Join Date: Jan 2006
Location: Purgatory, Pennsylvania
Posts: 16,538
Thanked 7 Times in 4 Posts
GXP Venom is on a distinguished road
Default

Actually this was when i had older models with the 3800 (85 Regency, 90 LeSabre, 92 Park Avenue) that did they same as what you describe, and I took then in trying to find a "fix". They told me what I stated (different times) and that if it isn't overheating, leave it be. I saw the 195-220 swing in the summer and towing a little utility trailer but none ever blew a cork. I did use the Park Ave quite a bit for chores with the trailer and did add a manual switch to the fans just to make myself feel better.
GXP Venom is offline   Reply With Quote
Old 07-08-2010, 11:44 AM   #9
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

The stock 195F stat and fan settings of low speed at 216F, high speed at 228F are done to keep the motor running a bit hotter as it is more "efficient" at higher temps. Changing out the T stat like mentioned is worthwhile, but only helps with airflow.

If you'd like a reprogrammed pcm, I have your year unlocked in HPT and could do it cheap. Only thing is I'd either need your pcm or another 97 pcm and your vin #.
BillBoost37 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
T-stat macho_mike21 1992-1999 2 02-06-2003 09:03 PM
No Stat at Part Store Sol 1992-1999 11 12-12-2002 06:43 PM
NEED HELP UNDERSTANDING WHY TO USE 180 STAT!!!!!!!!!! d151avid 1992-1999 3 11-10-2002 01:13 AM
t-stat bonnie94ssei Performance, Brainstorming & Tuning 5 10-25-2002 09:31 PM
tranny cooler/t-stat bonnie94ssei Performance, Brainstorming & Tuning 9 10-23-2002 07:58 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 04:13 PM.


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.