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Troubleshoot help please. 1985 Vette overheating after water pump change

Vette Suzy

New member
Joined
Mar 3, 2019
Messages
1
Location
Sacramento
Corvette
1985
I just replaced the water pump, thermostat & upper radiator hose, bled the cooling system but my car now overheats. It NEVER has run any hotter than 175 so 200 plus degrees is not the norm here. Will check the lower hose. Thermostat was tested and works. Any ideas what to try next? Thank you. :confused
 

Wayback

Well-known member
Joined
Aug 14, 2006
Messages
560
Location
S-NJ
Corvette
93 Ruby Aniv roadster/6spd
Could be air bound,when I did a pump & stat I drilled a small hole in the stat so the anti could circulate & let trapped air out of the block.You should also turn the heater on. It has that weird shut off for the heater that bypasses the core.
 

thatguy

New member
Joined
Mar 29, 2019
Messages
3
Location
Tampa
Corvette
1995 flame Red Coupe
My guess is air is still trapped in the system. Turn the heat all the way up with the fan on high while you rev the engine to 2000 - 2500 RPMs. Do that for a few minutes. If you have a helper they maybe able to see air bubbles at the res.
 

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