94platinumDeville Posted January 23, 2018 Report Share Posted January 23, 2018 When I turn my heat on in my car I can hear it trying to push through the vents but sounds like it gets stopped by something. Does anybody know what that could be?? 94 Cadillac Sedan Deville Link to comment Share on other sites More sharing options...
barczy01 Posted January 23, 2018 Report Share Posted January 23, 2018 possible clogged evap core. NONE on the vents have air coming thru? Link to comment Share on other sites More sharing options...
94platinumDeville Posted January 23, 2018 Author Report Share Posted January 23, 2018 2 hours ago, barczy01 said: possible clogged evap core. NONE on the vents have air coming thru? NONE but when I just smacked the dash board a bit it finally comes on but ONLY from defrost vents Link to comment Share on other sites More sharing options...
barczy01 Posted January 24, 2018 Report Share Posted January 24, 2018 check the feed vacuum line in the engine compartment. Right in the back muddle look for a tube, near a small bracket mounted on the firewall. Link to comment Share on other sites More sharing options...
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