Might need more coolant or may need to replace thermostat.
It is defrost.
alve, check vacum line first (on heater valve)
yes, however, if the ac does not work then you will be unable to blow cold air on a hot steamy windshield to defog it.
does fan door motorized or on a vaccuum line when you switch from AC to defrost?
If you have all of those symptoms, it sounds like selector on front dash is all shorting out, or your PMC module is acting up sending all different singles.
I don't know why the vent would not open for the defrost, but it may be related to the fact that your heater core is blown. If your getting nothing but cold air out of the vents when the heat is on, your core is finished and if the core is finished then it is likely related to your vent not opening/switching. Something''s wrong with your heating either way.
It sounds like your vacuum controls are stuck on the defroster I had that happen and I sprayed a lubricant into the vacuum lines and it cleared up
La mercedes auto asa este.mijlocu sufla intotdeauna aer rece.
ihave a 1986 chevette that when i turn defrost on it blows out heat and when i put heater on it blows out only cold air? ihave a 1986 chevette that when i turn defrost on it blows out heat and when i put heater on it blows out only cold air?
Because it is cold
you might need freon charged, you can do it yourself with a $20 can setup from autozone. if the system wont hold pressure then you have a leak somewhere
The crank position sensor on a 1993-1997 intrepid with the 3.5 liter is located on the passenger side of the transmission bell housing ( top ) breeze to change and usally fixes the cold starting issue with these automobiles ( usally ) for $40 or less it is worth a try!!!!!