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Old 12-12-2011, 02:09 PM
FireRanger FireRanger is offline
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Default Re: NO HEAT Troubleshooting Guide

Quote:
Originally Posted by Bwad View Post
Well it works all the time now, just not really that hot.
Well it should be blazing hot. If the hoses are HOT, then it is probably not opening the blend door all the way.


Quote:
Originally Posted by mrwolff View Post
I double checked the hoses on a 4 cyl 2.3 going to the hot water valve. The one coming up is Very hot, the other is hot but not as hot. The 2 going through the firewall are only slightly warm. I took off the vacuum hose, there is suction when control is set to AC/MAX and none on any other setting. Still blowing cold air and the firewall hoses never heated. I am thinking the valve needs to be replaced?
When you set it for off or max ac, do you see the valve operating? If the valve is jammed shut, you will never get heat. If it isn't moving, you can try moving the lever by hand to un -jam it. If it is working properly, then there's a good chance it is a clogged heater core then.
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