Heater does not work on my 1985 jag

1985 Dodge Ramcharger Carburetor

As you can see, this carbureted engine has an electric choke. The cold sets that butterfly on the choke plate and there is a heater coil that warms up and disengages it. IF that electric choke heater burns out, it wont release the choke plate.

Does the engine reach normal operating temp? With the engine warmed up, are the heater hoses, hot? Does the blower motor work? If all the above are ok, then you have to check temp door under the dash.

THEIR IS A VALVE ON THE RIGHT SIDT OF THE VECHILE HEATER VALVE RIGHT AT THE FRONT JUST BEHINED THE BUMPER THAT NEEDS CHANGIND OR CHECK THE CONNECTIOS TO IT FIRST.

because water has to warm up until 90*

Hi
You will be fine driving the car with the engine light on as this is a safety feature the car may be under powered ie may feel as if the turbo's not working (If it has one) but this is perfectly normal the engine light comes on which will then put the car in to "Limp Mode" which then allows you to get the car home or to the nearest garage
Hope this helps Nick

If you feel warm air blowing up on your windshield and If your heater is working, I would guess its a coolant leak, probably the heater core. Usually a coolant leak will leave a kind of "greasy" fog that is more difficult to wipe off. It is basically steam coating your windows. You should be able to smell coolant if its leaking.
If no warm air is blowing, I would guess an issue with your heater control module or a vacuum problem of not supplying vacuum to move the plenum door.

Hope that helps.

It doesn't sound like hot water is circulating thru the heater core. That model should have a valve on the intake hose that goes thru the firewall. Check to see that the cable is connected and the valve is working. If it is working properly, the hose should become hot on the heater core side of the valve.

change the air flow meter.

check tosee if pipes r getting warm going from engine bay to matrix in car

Sounds like one of the fancy heaters. They have circuit boards that can go bad. don-ohio