heat only blows on defrost
 

the only way my heat works in on defrost anybody know why any help would be greatly appreciated can't afford to take to shop i have a 3yr old and this is our daily thanx peanut

RE: heat only blows on defrost
 

Please have some patience... There is no need to post the same question in several different places...

Vacuum line disconnected somewhere in the system??? This topic has been covered quite a few times. If the related threads link below doesn't cover it, try using the search feature.

Also, you should include your vehicle information in your signature and attach it to all of your posts when requesting tech help. That way those of us attempting to help can give you the most accurate information.

RE: heat only blows on defrost
 

i would say check ur vacum lines to begin w/ on the back of the intake plenum there should be a vac line see if its connected also if u follow that line further it comes to a T split piece make sure all the lines r connected to it.

RE: heat only blows on defrost
 

The damper door vacuum actuator on mine lost two clips that join the actuator to the damper linkage. $10 for the 2 parts at the dealer. About 15 minutes to fix. Kinda tough as you have to do the repair blind with one hand from below.

Check yours to see if the damper closes and opens as you switch from defrost to heat.