Question about 1994 Dodge Shadow

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Heating in my car

I do not get warm air. blower works. climate control switch works. i put in a new thermostat

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There is a valve that controls the hot water into the vehicle heat exchanger which is on the cab side of the firewall. The device is controlled mechanically with a push-pull cable , by vacuum control or electro-mechanically by a servo actuator.
There are most likely TWO pipes that come from the engine radiator and go through the firewall, rear wall of the engine compartment, into the passenger cab area. The Heat exchanger control valve is
mounted somewhere along the path of ONE of those pipes or tubes (the "input" tube).
There are many threads on the Internet on this vehicle and year, and so many concern heating/cooling.
I would suggest getting or borrowing a $20-25 manual on the car and going to the body section and
tracing either the vacuum diagram or the heating control section to find the valve and also the dash controls. Something is disconnected or broken with either one of the three methods described.

This assumes all else is OK and NO COOLANT leaked into the Oil (frothy Oil on dipstick)
and no Transmission Fluid is in the Coolant (oily color reddish in the Coolant with oil smell instead of sugary sweet smell) ; if the coolant system integrity is compromised in any way as described; stop -> go to a mechanic <-; increasing damage is imminent.

If its just a control issue, you can probably set the valve up at 1/2 open if its a mechanical type with push-pull cable; I have done this on several cars when the control cable rusts; disconnect the valve end and set it manually 1/2 or 3/4 for the winter

Johnny

Posted on Oct 23, 2008

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