Engine heating like hell !!!!

[jra]

Could be hot water valve to your heater core letting water circulate, valve not closed all the way, or a bad valve, I've had heater valves that were closed but would still let water through. Touch your heater hoses at the firewall, if both hoses are hot, it's the heater valve.

[tmontague]

Originally Posted by jra

Could be hot water valve to your heater core letting water circulate, valve not closed all the way, or a bad valve, I've had heater valves that were closed but would still let water through. Touch your heater hoses at the firewall, if both hoses are hot, it's the heater valve.

I thought there is always coolant flow to the hear exchanger, it is just the air flowbtjat changes to include or exclude the hear or cold outside air?

[Bony_ahmed]

i've checked everything......no problems anywhere....thinking about adding an external fan to improve cooling......r there any drawbacks to that ?