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  View original topic: 91 jetta overheat
letherer Wed Jul 26, 2006 4:02 pm

OK, I've changed the cap, thermostat, radiator. The heat is working. All hoses are hot and lots of pressure. However, the radiator is surprisingly cool to the touch, warmer by the hoses. Fan is working. No white foam on cap. No oil in coolant. No coolant in oil. I guess all that's left is the waterpump. Any advice is greatly appreciated.

atye Mon Oct 02, 2006 2:38 pm

I know it sounds dumb, but...

Is the thermostat in backwards by chance?

plasticman1432 Mon Oct 02, 2006 2:42 pm

I'm not sure if you can put the thermostat in backwards in that pump, but it can't hurt to look.

I'm thinking the stat is stuck closed, or the pump is bad - check the thermostat first, as it's the cheaper of the two parts to replace. 8)



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