2000 Ford F150 heater/defrost
5

Asked by stxguy Oct 11, 2013 at 05:37 PM about the 2000 Ford F-150 XL SB

Question type: Maintenance & Repair

on my Ford 150 with 4.2L V6, when it is at operationg temp, if you turn on the heater/defrost it will blow hot air for about 10 seconds then go back to cold. any ideas on this? i'm thinking maybe a actuator or blend door issue?

1 Answer
74,270

OJ answered 11 years ago

Probably. The problem you speak of was common on vehicles where the a/c controlls worked off vacuum. I do not know if you vehicle does so or not. Turn on the a/c and let it begin blowing cold. Then switch the blower controls to defrost and see if the same thing happens.

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