2nd Gen Non-Engine/Transmission Whats goin on with my heat??

[BTilson317]

well its never done this just randomly it started this morning... the heat will only blow on the highest setting, i think maybe its stuck on defrost?? but whats goin on, my dad says the heat door inside the dash my be done for?? Thanks to any responses!!

 

[GHansen]

Check for disconnected vacuum lines under the hood where they come out of the manifold and follow them looking for broken sections along the way especially the one that passes over the engine to where it goes into the fire wall on the passenger side.

 

[JacobsD]

If the blower motor only works on high speed then your resistor is shot. Very common problem with all vehicles, especially the new Chevy pickups.

 

[DieselDoghouse]

As mentioned if the blower only spins on high your tap resistor is not connected/broken. If the blower is ok but air direction is defrost only - that is the default as mentioned when there is no vacuum to draw the routing dampers closed. Check your vacuum lines and also pull the hose connection on top of the vacuum pump and check by hand. If no vacuum - try 1 shot of WD-40 (IMHO) I've had my pump stick and that solved it.

 

[BTilson317]

awsome guys, good input, thats what this sites all about. . hopefully thats it ill check it out thanks again

 

[Hammer]

Let me know if your resistor is out,I have a spare here I can send out. It seems that when I bought the first one I misplaced it in the shop and had to buy a second one a week later,doooohhh. Then this weekend while putting things where they belonged I found the other one. It was one of those "I'll put it where I know I can find it" deals..... Andy

 

[BTilson317]

heater possible solved

welll. . according to the pops. . its the resistor more than likely, ill try er' out an take your guys word for it and if thats not it then ill make fun of him for working mopar service for 25 years! hahah:-laf