Strange overheating problem.
#1
Strange overheating problem.
My 87 4runners 22re has been acting weird lately. I thought it might be the temp overshoot problem but it still overheats when the climate control is on cool. The needle goes up almost to the red then shoots down really fast. Now this sounds like a sticking termostat, but the other day it started to go into the red, then went back to normal. I gave it some gas and the temp needle sort of revved like the tach. Went up then back down. What is going on? I'm not burning any coolant, no milkshake oil, no sweet exhaust so i'm hoping this problem is not a headgasket issue. Any suggestions? Thanks.
#3
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#5
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Air in the cooling system will have the same symptoms of overshoot.
Check ALL cooling system hoses for leaks, especially the heater hoses behind the engine.
Check ALL cooling system hoses for leaks, especially the heater hoses behind the engine.
#6
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