I hope somebody can help me with a problem. I got no heat in my 1800.Temperature is normal and its not using any coolant. Could it be the thermostat? i will be thankfull for any help.

Did you feel down near your feet? I thought I had this problem today but still have heat to lower vents in my 1800 wagon 1981

(I don't actually have any real advice - just an observation)

No i have no heat to the lower vents,only cold air all over. -5 degrees and its getting a bit cold...help please.

low coolant?

I hope somebody can help me with a problem. I got no heat in my 1800.Temperature is normal and its not using any coolant. Could it be the thermostat? i will be thankfull for any help.

 

pull the hoses off from the engine bay side of the firewall, use a garden hose to check for flow through the heater core.

No i have no heat to the lower vents,only cold air all over. -5 degrees and its getting a bit cold...help please.

 

Check the lines in and out of the heater core when the engines warm. Both lines should be hot.

 

If the hoses are both warm, move the interior, and check the brass that is exposed by the gas pedal. verify that it's warm. Check the operation of the core valve. Find the vavle, and it's cable driven lever, then move the temp selector and watch that it's moving the valve.

 

If the valve isn't moving properly when you turn the temp selector, that is the problem. Most likely the outer housing of the cable has come unclipped and the housing is sliding instead of the cable inside.

 

To fix:

 

remove the temp and blower speed knobs, undo the thin nut around each ones shaft.

 

Remove radio/Ashtray console

 

Remove 2 screws at the bottom of heater controls console.

 

Remove heater console face.

 

Now you can see the cable attaching to the back side of the temp selector.

 

Use a 90 degree screwdriver, and some patience to reinsert the cable under the clip, and tighten it in place.

 

 

.......If the cable was not the problem, and the valve was open, but little to no heat, then it may just be a clogged core......flush out with a garden hose, both ways til it runs clear.

Is anything coming out of your vents?

If it's just blowing cold air along the floor, check the plastic tube that directs air to the vent system.

It lies under the little shelf on the passenger side, resting against the firewall.

It may have become dislodged or worked itself loose.

Put that sucker back on, on both ends, and see if that fixes your problem

 

Twitch

Thanks for good answers! It blows in all vents so i dont think that its the problem,but thanks anyways.

Like I said, check the operation of the coolant flow valve. It also controls the blend door via linkage so a problem with either will be evident there at the valve.

 

It's right above the drivers right foot area, next to gas pedal.

I will check that out tomorrow Gloyale. Thaanks.