 Coolant boiling in reservoir |
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 Oct 7, 2017 - 4:45 AM
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Enthusiast  Joined Mar 24, '17 From Las Vegas Currently Offline Reputation: 0 (0%)  |
I have a problem that I've noticed recently with my 1994 Celica GT. I did an engine swap recently and I've noticed something I've never had in the previous engine. I put another 5SFE in by the way. I redid the water pump and redid the gasket for the thermostat. When I run the car, for a period of time and shut it off, I've noticed a bubbling that under the hood coming from the coolant reservoir. Can anyone give me a culprit or a common issue with this? I've looked it up other places it says a few things: bad radiator cap, improperly sealed head gasket. I'm not really sure where else I should look? Sometimes, not very often, the car will overheat will driving and if I put it back in neutral and rev the engine it goes to normal operating temp. The temp gauge goes to about half way where it should be. I'm lost. Can anyone explain where I should start looking?
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Oct 7, 2017 - 9:54 AM
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Enthusiast Joined May 29, '09 From Gainesville, FL Currently Offline Reputation: 17 (100%) |
replace the thermostat or confirm proper installation/function, hope your head gasket isn't blown.
Water is flowing, or it wouldn't cool when you rev it, so the water pump seems to be working. Why its not free flowing is a concern. This post has been edited by rave2n: Oct 7, 2017 - 10:00 AM |
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Oct 7, 2017 - 2:21 PM
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 Enthusiast Joined Feb 23, '12 From Warrior, AL Currently Offline Reputation: 0 (0%) |
Well, you can do a compression test to check for the head gasket. Outside of that I'd look at the thermostat and radiator cap.
-------------------- 2001 Miata LS 5-speed
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Oct 9, 2017 - 7:53 AM
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 Enthusiast Joined Feb 5, '05 From pineapple under the sea Currently Offline Reputation: 9 (100%) |
First, remove the thermostat and check it. I’d replace it.
If the HG is gone, you’ll probably see milkshake in your thermostat housing. -------------------- 1991 MR2 - T-tops - Crimson Red - Gen3 3SGTE - Lots of money
 I'm not really an asshole, but I play one on the internet. **** Photobucket |
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Oct 9, 2017 - 10:36 PM
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Enthusiast Joined Dec 8, '03 From Lancaster CA Currently Offline Reputation: 6 (100%) |
its not the thermostat. like mentioned if the engine is cooling itself then the thermostat is opening. Id be more looking at blocked water passages in the block. Its iron and you dont know its history.
-------------------- 2001 Celica GT-S Turbo
1997 Supra TT 6speed 1997 Celica 3MZ/1MZ swap 1990 Celica All-Trac |
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Oct 10, 2017 - 12:09 AM
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 Enthusiast Joined Jan 10, '17 From Russia, Izhevsk Currently Offline Reputation: 0 (0%) |
Could there be a crack in the cylinder block?
-------------------- Email - vad07@inbox.ru
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Oct 10, 2017 - 6:43 PM
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Enthusiast Joined Mar 24, '17 From Las Vegas Currently Offline Reputation: 0 (0%) |
I bought this engine online and it was certified tested before hand what not with a 90 day warranty. It was only a short block and I added all of my components from the old engine over. I was thinking thermostat as well... I’m hoping it’s not a HG...
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