only defrost.???? - Ranger-Forums - The Ultimate Ford Ranger Resource

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Old 10-07-2006
UNCCRang49's Avatar
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Join Date: Oct 2006
Location: Apex, NC
Posts: 328
only defrost.????

yup, no matter what selection I have my temp control on, it always blows out of the defrost. the fan still blows fine, it will go to heat and a/c, just not out of the regular vents. any ideas on the problem.
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Old 10-07-2006
crazzyearl's Avatar
Join Date: Jul 2005
Location: Lower Alloways Creek, NJ
Posts: 282
the vacume controll has failed that is the fail safe of the system. May need a new actuator.
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Old 10-07-2006
bwester04's Avatar
Join Date: Mar 2006
Location: Round Rock, Tx
Posts: 2,641
orrr.. you may have a hole/leak in your vacuum lines under the hood, just check them, they go into a black round reservior under the airbox
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Old 10-07-2006
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Or, on your 98 4x4, the vacuum leak could be in the Pulse Vacuum Hublock system, a notorious leaker that shares the vacuum reservoir with the HVAC.
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