88 Blazer 4.3 overheating
#1
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Join Date: Apr 2020
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88 Blazer 4.3. I changed everything on mine (Cooling system) and it is doing the up and down temp. This is making me crazy because I am pretty good at working on my own stuff.
Last edited by Caroline Thatcher-Furness; 04-22-2020 at 03:46 AM. Reason: Minimize problem
#2
Sounds like air in the engine coolant. With a cold engine raise the front end with the passenger side slightly higher, radiator cap off, and idle until it reaches operating temperature. Watch for bubbles being burped out of the radiator neck.
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PaulO2288
Engine & Internal
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01-28-2012 04:54 PM






