Thermostat stuck open.
FTE Chapter Leader
Joined: May 2006
Posts: 12,338
Likes: 1,314
From: Central Mississippi
Could you elaborate? Is it a OBD I or II?
Year, batch code, engineering # if possible.
I looked pretty hard once. Be nice to pin it down for posterity.
Year, batch code, engineering # if possible.
I looked pretty hard once. Be nice to pin it down for posterity.
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Laughing Gas
Joined: Jan 2023
Posts: 1,172
Likes: 114
I’ve been doing some testing, drove the 40 minute drive again. It was 195-205. And then for local 10-15 minute drives the temp is 180-185. Sometimes 192. The most recent test i did was 5 minutes side streets, 10 minutes freeway. So rpm’s were 1100-1500 on side streets once I reached speed and on fwy it was 2200. I feel like that’s enough info to tell if something’s wrong. I have been testing it on the coolant hose right where it connects to the water outlet. If I read it in the middle of the hose it reads 160-170. It’s a harbor freight infrared tool. It matched what my auto shops Matco ones said. So it’s accurate.
Cargo Master
Joined: Mar 2007
Posts: 2,826
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None of your information can prove the thermostat is stuck or not. All of it can be explained away with theories.
The only way to know is to take it out and check it. I have never tested a thermostat. They are too cheap and if the thermostat is old, why bother testing. I would just swap it out. With a good name brand thermostat.
The only way to know is to take it out and check it. I have never tested a thermostat. They are too cheap and if the thermostat is old, why bother testing. I would just swap it out. With a good name brand thermostat.
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Laughing Gas
Joined: Jan 2023
Posts: 1,172
Likes: 114
https://www.oreillyauto.com/detail/c...0?q=2662&pos=0
I have this housing. Is there a way to get a o ring for it so I don’t have to replace the whole thing?
I have this housing. Is there a way to get a o ring for it so I don’t have to replace the whole thing?
Cargo Master
Joined: Mar 2007
Posts: 2,826
Likes: 1,030
FTE Chapter Leader
Joined: May 2006
Posts: 12,338
Likes: 1,314
From: Central Mississippi
Thank you much.
In regards thermostats, I never install one on any of my personal vehicles without simple immersion test in water & a kitchen thermometer.
Tells me when, with how much temp, initial opening & how long to full.
Costs nothing.
In regards thermostats, I never install one on any of my personal vehicles without simple immersion test in water & a kitchen thermometer.
Tells me when, with how much temp, initial opening & how long to full.
Costs nothing.
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Laughing Gas
Joined: Jan 2023
Posts: 1,172
Likes: 114
Even this shape o ring? I’ll test the thermostat this time.
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Lead Driver
Joined: Oct 2016
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From: Houston/Sugar Land
You can get it here.
https://www.summitracing.com/parts/a...xoCYTYQAvD_BwE
https://www.summitracing.com/parts/a...xoCYTYQAvD_BwE
Lead Driver
Joined: Oct 2016
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From: Houston/Sugar Land
The fitment info says that the oring works in 1960's Ford's. If you bought the neck at a parts place like I have seen I don't think it would be my first choice. Looks like chrome but it's not. If you can afford to get a name brand housing, it might be in your best interest.
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Laughing Gas
Joined: Jan 2023
Posts: 1,172
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I got it at a parts stores it’s a Mr gasket brand I think. I did remember everyone saying no chrome. But I figure if I’m changing the coolant every 2yrs it will be fine. There is a Edelbrock one it’s black and it still has the o ring. I don’t want to go back to paper gasket, as I had a nightmare getting those to seal so I just went to o ring.
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