Heat help

[johngo1]

Seems that when I turn the heat on, I get hot air out of the drivers side ducts BUT the passenger and rear blow cold.

Any ideas??
John

[attack eagle]

rear should be cold... no heat on it

PAssenger??? control unit or bad valve maybe?

[wingman]

Could be a vent problem. I had a vent problem similar to this with the old E12. Others are probably more knowleable but it could be the temp control on the passenger side. I'd do a search.

[johngo1]

After further study, there is heat at the passenger side vents just not to the back. As for the heater valve, it seems to be working as both output hoses get hot when I turn the heat on.

Why would the back be cold?

[DaveVoorhis]

Heat for the rear comes up from the vents under the front seats. The vent at the rear of the console is so the rear passengers get fresh air. It's equivalent to the fresh air vent on top of the dash for the folks in front.