Thread: thump noise
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Old 04-03-2011, 08:55 AM
FX4OR FX4OR is offline
Ford Tough
Join Date: Dec 2010
Posts: 417
Default Re: thump noise

yeah, defrost uses the a/c compressor to dehumidify the air it puts into the cab. that's how it gets rid of the condensation built up in there. That's probably what it is, nothing to worry about.
2002 Ranger FX4
4.0L SOHC, 5R55E Auto, 4.10 8.8 Torsen, 31x10.5/15 BFG ATs
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