1989 toyota corolla sr5 overheating - Toyota Nation Forum : Toyota Car and Truck Forums

perk · 12-19-2010, 02:58 PM

I just bought this car from the guy has 195 thousand miles and its overheating. It didn't have a thermostat and the housing was covered in red silicone. Took all that off and now it has a a thermo, radiator cap, coolant and still overheating. I can't figure out what keeps causing it to overheat, also seems to heat up more when i down shift.

Flashmn · 12-19-2010, 03:18 PM

Air in the system, broken water pump, blown headgasket.

***SCT*** · 12-19-2010, 06:27 PM

Or clogged.

eage8 · 12-19-2010, 07:50 PM

Or the radiator fan isn't turning on.

perk · 12-19-2010, 11:06 PM

Did a flush and the fan turns on when the key is in the on position. but it does seem that the radiator is clogged, the top holes are clogged. Also I cant get the thermostat housing back on. I got a thread lock and gasket maker for the housing but the bolts wont go in. The y seem to be cross threaded and at the opening and then threads inside. Does anyone know what the size is?

Flashmn · 12-20-2010, 05:10 AM

M8x1.25 is the thread size for the thermostat housing.

perk · 12-23-2010, 10:38 PM

Thanks and i got another problem. When i hit the brake hard enough the engine stalls out. It also has an idling problem.