Posted 18 July 2011 - 12:27 PM
Posted 21 July 2011 - 12:58 PM
Posted 22 July 2011 - 01:57 PM
Posted 22 July 2011 - 04:29 PM
I know on Merkur's, it often makes a difference on a car that has been running hot.
Posted 22 July 2011 - 06:50 PM
Posted 22 July 2011 - 07:03 PM
If it runs 210 on the highway, I don't think it has anything to do with the fan, which probably wouldn't even run in that case. Look for coolant restrictions, like a plugged radiator, collapsed hoses, bubbles in the coolant (bad news), I assume the water pump's turning ok. Does the cooling system hold pressure? Are you loosing any coolant when this happens?
1998 Trans Am - LS1/A4 - all stock and almost all original - one owner - driven daily
Posted 23 July 2011 - 07:41 AM
Posted 23 July 2011 - 08:26 AM
Your hoses are tight because there is pressure built up from the heat, which wants to turn into steam....just like an old fashioned pressure cooker. They would get tight even if your pump did not work.
As for testing the pump...not really any way to check it apart from taking it out. You might have damaged/failed impellers, which would slow down the speed of water circulation, hence leading to running hot.
I would suggest pulling it out while you are flushing the system.
Posted 25 July 2011 - 05:23 PM
Posted 26 July 2011 - 11:56 AM
Posted 30 August 2011 - 06:42 PM
Posted 31 August 2011 - 11:10 AM
Posted 31 August 2011 - 11:17 AM
Posted 31 August 2011 - 06:15 PM
210 is about what the engine should run at. If it is running at that while at highway speeds, then your water pump and radiator are probably fine. The issue would be fan related. While at highway speeds, the fan has no effect on the cooling system since the speed of the air on the car doing 65ish is faster than what the fan would blow anyway. If you are getting hot while in stop and go situations on normal city streets, then your fan is not moving air fast enough through the radiator. I think someone else may have mentioned it, but the fan clutch may be bad and therefore not turning the fan at the right speed. I'd probably look at either replacing the fan or switching to electric fans.
210 on the highway is about what it should be running at. (meaning the cooling system is running fine)
His issue with running hot is when he is not driving on the highway. This would indicate it IS an issue with the fan.