Question about 1999 Dodge Ram
My 99 dodge ram diesel 3500 heater only blows on defrost. I cannot change it to floor or panel or mix. I have read elsewhere that it could be the 'blend' door actuator. If this is the problem, is it vacuum or electrically operated? The temp and blower work fine.
Check vacuum lines on firewall for leak, check all vacuum lines if one on fire wall is ok , doors work off vacuum
Posted on Oct 14, 2009
Should be electric and yes your right , the actuator .
Posted on Dec 04, 2008
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