Question about 2005 Ford F-150
A/c don't come on checked pressure switch the clutch not froze up but it wont kick on
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Posted on Jan 02, 2017
Your system might be low on freon. Get a kit with a hose that has a gauge on it so you can see if you are in the "Good" range. The cycling switch won't close unless there is enough freon in the system. You can temorarily jumper the connector for the cycling switch to see if the compressor will come on. If it does, you are low on freon for sure. Do not let the compressor run for more than 15 - 30 seconds with it jumpered.
report back results.
Posted on May 21, 2009
Hi..my name is Keith..i have never worked on a Festiva...but all the Fords i have worked on..all the relays are under the hood in a black box with a lid on it..and inside the lid..it tells you what everything is..and you do have a problem with voltage reaching the compressor clutch..and i would suspect a fuse or relay first...i hope this will help
Posted on Jul 08, 2009
SOURCE: I boughta 1998 f150 4.6L
What did you do to determine that the pressure is ok? If you bridge the switch on top of the schrader valve and the compressor does not cycle, you need to check wiring and any relays that may be defective along with fuses. check for voltage at the compressor, key on, engine off. Try the climate controller in defrost setting and make sure your radiator fan is, in fact, working-if it will not go on, your ac sill not either. Your vehicle might have a vlcm module that controls multiple functions (it is a ford thing) and a segment of it that controls the compressor and the radiator fan is part of the vlcm (variable load control module). They are usually located in front of the radiator and are not servicable-you have to get one from a junkyard or ebay since they commonly are not dealer stocked anymore.
Posted on Jul 21, 2011
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