Air Conditioning problem
2003 Ford F150 V8 Four Wheel Drive Automatic 160000 miles
A/C started blowing through defrost only upon acceleration. Found info on worn vacuum lines and did find one near the battery. Spliced the line with extra line and electrical tape and it worked fine for a couple of days, then same problem returned. Now it will blow only through defrost regardless of acceleration. This is identical problem with either A/C or heater. Thought at this point we'd take it to a mechanic to check all the vacuum lines. They said it was the electronic controller. We replaced the electronic controller a little over a year ago for similar symptoms and everything did work fine for awhile. But it doesn't seem to make sense this part would fail like that. How can we verify this is the problem again and are there any alternatives we could rule out first? Seems strange we would find this broken line and then the fix worked for a short time and then immediately after that the controller failed?
have the same problem?
Wednesday, November 18th, 2009 AT 9:08 PM