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My problem at the moment is overheating

Tiny
BUGHOUSE1220
  • MEMBER
  • 1989 CHEVROLET SILVERADO
  • 40,000 MILES
I have a 89 chevy 1500 with a 350 my problem at the moment is overheating. I have replaced all the hoses, thermostat, water pump and radiator. Before replacing the radiator I flushed the heater core and the block. There is no water in the oil or oil in the radiator. All the spark plugs are dry when I check them.
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Thursday, April 5th, 2012 AT 6:10 PM

11 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Try bleeding the cooling system could be airlock- if it continues have it block and pressure tested here are two guides to help us see whats going on, it sounds like the radiator is plugged.

https://www.2carpros.com/articles/engine-overheating-or-running-hot

and

https://www.2carpros.com/articles/head-gasket-blown-test

Please run down these guides and report back.
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Tuesday, June 1st, 2021 AT 6:18 PM
Tiny
DJCL
  • MECHANIC
  • 767 POSTS
Are you getting good heat out of the heater?
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Tuesday, June 1st, 2021 AT 6:18 PM
Tiny
BUGHOUSE1220
  • MEMBER
  • 8 POSTS
System is full and the heater is working great but still over heating. Im also getting water coming out of the tail pipe, not much but alittle, I cant tell if the fluid is going down as of yet but I dont think in lossing any coolant.
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Tuesday, June 1st, 2021 AT 6:18 PM
Tiny
BUGHOUSE1220
  • MEMBER
  • 8 POSTS
Also no smoke from the exhaust is noticable
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Tuesday, June 1st, 2021 AT 6:18 PM
Tiny
DJCL
  • MECHANIC
  • 767 POSTS
When is it running hot? Highway ot idling
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Tuesday, June 1st, 2021 AT 6:18 PM
Tiny
BUGHOUSE1220
  • MEMBER
  • 8 POSTS
Idling I havnt taken out on the road yet, once I get the cooling figured out I am changing tranny fluid, filter and rear seal. But engine first.
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Tuesday, June 1st, 2021 AT 6:18 PM
Tiny
DJCL
  • MECHANIC
  • 767 POSTS
If you remove the radiator cap and rev the engine do you see coolant flowing in the neck. If the truck is started cold how long will it idle be for over heating
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Tuesday, June 1st, 2021 AT 6:18 PM
Tiny
BUGHOUSE1220
  • MEMBER
  • 8 POSTS
From a cold start it runs fine and gets to operating temp in a normal time period but it pauses and then continues to climb as if the thermostat isnt opening so I am going to try changing it again and see if that will fix the issue. Could be a faulty part
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Tuesday, June 1st, 2021 AT 6:18 PM
Tiny
DJCL
  • MECHANIC
  • 767 POSTS
Let me know
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Tuesday, June 1st, 2021 AT 6:18 PM
Tiny
BUGHOUSE1220
  • MEMBER
  • 8 POSTS
Ok I checked the radiator while running flow is fine. Changed the fan clutch like the guide said all fixed no more over heating! I love this site.
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Tuesday, June 1st, 2021 AT 6:18 PM
Tiny
DJCL
  • MECHANIC
  • 767 POSTS
Glad you could get it fixed, that kind of problem can be tough. Please use 2CarPros anytime we are here to help.
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Tuesday, June 1st, 2021 AT 6:18 PM

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