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06-10-2005, 01:43 AM
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#1 |
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Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,354
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Bad Thermostat?
I got the intake all done and fired it up tonight. Temp guage got to almost H then I shut it down. I checked the top radiator hose and it was still flexible like there was no water coming through. I filled up the radiator before I started it. Could it be a bad thermostat?
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RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234 |
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06-10-2005, 08:01 AM
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#2 |
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Registered User
Join Date: Feb 2002
Location: Vacaville, CA
Posts: 2,745
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You could have an air pocket under the t-stat (this can cause it not to open). I like to drill a small bleeder hole in them so this won't happen.
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 70 C/10 Light Red 350/TH350, HEI, Duals w/40 series Flows, 91 seat, LED taillights 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI |
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06-10-2005, 10:16 AM
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#3 |
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Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,354
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Im going to change out the thermostat tonight. Where would you drill this hole on the thermostat?
__________________
RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234 |
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06-10-2005, 11:22 AM
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#4 |
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Registered User
Join Date: Jun 2002
Location: Knoxville Tenn.
Posts: 3,058
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see if this will do
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56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer |
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06-10-2005, 11:27 AM
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#5 |
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~Rest In Peace~
Join Date: May 2005
Location: CALIFORNIA NOR CAL
Posts: 9,707
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for 4 bucks put a new one in
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is it fast ? it has a lighting bolt donut? B___H please, I can remove 90% of your so called "beauty" with a kleenex |
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06-11-2005, 12:10 AM
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#6 |
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Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,354
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New superstant 180 in and problem solved. The other was was stuck. Not sure why. It wsa brand new.
__________________
RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234 |
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06-11-2005, 09:20 AM
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#7 |
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Senior Member
 
Join Date: Mar 2003
Location: Sparks, NV
Posts: 790
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I went thru 4 t-stats. Then drilled a small hole in the first one.......It worked for me.
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06-11-2005, 12:50 PM
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#8 |
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Senior Member
  
Join Date: Jan 2005
Location: CA
Posts: 6,234
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I have a suspicion that if intake manifold gaskets are used that block the heat riser passages that run through the middle of the manifold, the thermostat has a hard time warming up when there isn't any coolant/water in the manifold yet. I've struggled with this issue many times. I like the idea of drilling a little hole in the thermostat.
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