OVERHEATING ON S10

1998 Chevrolet Blazer

Tiny

imb4ur1973

August, 4, 2012 AT 7:46 PM

My 1998 S-10 blazer 4wd keeps over heating. I have replaced the thermostat, had the system flushed, (which they said there was no blockage cuz it was flowing good) replaced the clutch and fan blades, cleaned the condenser and radiator to ensure proper air flow, also replaced temp sensor sending unit. The water pump is circulating. And thermostat is opening and closing but I keep overheating to the point steam is coming out the overflow tube. I'm not losing fluid and it's not mixing into the oil or tranny. What am I missing?

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1 Answer

Tiny

saturntech9

August, 4, 2012 AT 7:58 PM

So is it overheating as far as the gauge reads?Have you tested your radaitor cap?If its not holding the correct pressure it will boil over the cap and that can cause it to overheat from the coolant loss.

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