Then I go back to my original post. Either the air is not being directed through the heater core or you got a defective core. Another posibility is that the car just dont have enough compression to make enough heat to heat the water. Get it up to operating temperature (leave the radiator cap loose) and stick a thermometer down in the radiator fill. See exactly how hot the water is.
Well .... ....this will be kind of messy but take the hoses off the heater core and see if any water is coming out of one of them . Make sure it is hot . If it is then its either your heater core or the doors in your heater box are not doing what they are supposed to be doing .
paul, even if the heater core is new, if the block wasn't flushed when it was put in it could be stopped up . if you have rechecked it then i would go back to the doors not opening...frank...
The motor,tranny,and radiator were all installed new with the heatercore that is why i dont understand not having any heat.The motor is far from being worn out and i know nothing is stopped up the box and vent setup is the only other thing i can think of. Thank all of you for your replies and trying to help me on the matter at hand.I have got alot of useful information on this site and hope to get alot more. :bananaman
wow, if motor, radiator and heater core were installed new, then there is no rust in the system......... sorry, I don't know how to work on an engine w/out any rust ......... Robert ps surely there is a way to manually (like w/a piece of wire or sumthin) open the plenum gate inside the heater box to check?????
Got the heat fixed it was the door in the heater box the rod that goes through it broke.Thank all of you for all the great info.:bananaman :bananaman
Having problems with my heat also! Earl, you said something about the heat working in Defrost but not in 'heat' mode. Come to think of it my heat works a bit in defrost but not at all in 'heat' mode. I've been trying to fix my heat for the longest time. I am also not sure if it is my heater valve or not... is there a good way to test the valve to see if it is working correctly? MineIsGreen
Green; if your car has a/c, it has the heater valve, if no a/c, it will not have one. Best way is to locate it, and move the lever by hand. If it moves freely, and will not move with the lever, then the cable could be your problem. If it moves, and still no heat, it will need replacement, assuming the heater core is good. Let us know. Earl
Ok, here is what I have figured out about the heat so far. The car doesn't have A/C but there is a valve just off the engine block that is run by two vacuum lines. Not sure of it's working condidtion. I kinda think this is the problem but dont know how to check it, might just bypass it somehow.... I have some heat, but the air never gets that warm though. Checked the cables and they are hooked up and seem to function the levers but haven't got into it that far into it.. I seem to have more heat when it is set to defrost then heat. This spring I flushed the coolant and backwashed the heater core with water. Seem to move through freely both ways so I don't think it is the heater core and it is the last thing that I want to replace until I have ruled everything else out. I am still not sure of the state of the warm/cool lever. I know the cable is attached and moving the arm.. but that is all... Does this lever actually turn on/off the flow of coolant or is it the one on the block? MineIsGreen
Green; if you don't have A/C, remove the valve, and install a jumper or new hose, and see if the heat returns. Cars without A/C don't need the valve, or didn't come with one. Give it a try, and let us know. Earl
