My 2001 ford tarus is blowing cold air, i changed the thermostat and flushed it. it now goes to cold temp reading at high speed and middle temp reading, I'm in the process of changing the heater coil and the little white thing on the plate for the coil inside keeps ticking, Does this have anything to with the coil.
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Re: 2001ford taurus heating problem
Recommend replacing coolant reservior cap also start car let it get to tempature put on glove and squeeze the upper radiatior hose together and if real weak and does not open up in your hand the water pump maybe weak but before you do all this check the condition of the drive belt because if the belt is slipping you will loose circulation in the coolant system and if there is a salvage yard near you or if it is not very expensive have you changed the temp sensor with the little wire on it not far from the thermastat housing
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you may have air in coolant system you should have a bleeding point somewhere and good idea to change pressure cab too. Just becarefull engine coolant and heating system is a pressurized system that works on high temp. can cause a serious injuries!!Safety. you need to run the car on idle with heat on at high speed and open and close the bleeding valve with proper size and long reach tool till no air bubbles comeout make sure you run the car enough that thermostat opened and engine run on normal operation temp. for a while.good luck.
Try checking the two pipes that go into and come out of the heater matrix, is one of them hot? if it is there is an air lock within the matrix, Also is the thermostat opening fully? Sorry i know you said you have changed it twice already but take it out check settings when it should open and close, then boil some water and test the thermostat
If no coolant flowing through the heater core then ther is no heat. There are 2 possible root causes needed to check out:
1- THE VALVE TO CONTROL THE COOLANT FLOWING TO THE HEATER CORE IS NOT OPENING AS DESIRED.
2- THE HEATER CORE GOT CLOGGED UP AND NEED TO BE FLUSHED.
These Tauruses had a problem with the heater cores plugging up, blowing out the head gaskets and no heat issues. Ford issued a TSB#98B26 (Tech Service Bulletin) to modify water pump and install a heater hose bypass tube. I would start by completely flushing the system with a good flush. Then reverse flushing the heater core. Refill the system and add a good additive. Also you can install the heater bypass tube as described in the TSB. The last one I did ran around $90 and 2 hours labor. Hope this helps you out.......
Sounds like heater core still plugged,and/or has air in system.I have had good luck with back flushing ( rinsing in reverse of normal flow) with a mixture of cascade dish washing detergent and water. This ("new and improved" Dex-cool antifreeze/coolant) sure does gum up and eat certain gaskets. When you have it refilled find a mechanic that has a vacuum operated filler. These are the greatest way to refill with no air pockets. Also could be the temperature blend door being incorrectly opened/shut though I doubt it.Hope this helps and please rate me!!