Remove the radiator hose from the housing by loosening the band clamp that holds the hose onto the housing. Push the clamp farther onto the hose to prevent losing it while changing the thermostat. Pull the hose off of the housing and push it off to the side. Plug the hole in the radiator hose with a shop towel to prevent fluid from leaking onto the engine.
Remove the two bolts that hold the thermostat housing to the intake manifold of the Escort. These bolts will be used again so they should not be discarded.
Once the bolts are removed, the thermostat housing can be lifted off of the intake manifold. Remove the old paper gasket that was sandwiched between the housing and the manifold. Pull the old thermostat out of the intake. The thermostat sits on a machined lip inside of the intake and is not bolted into place. Place RTV gasket maker on the machined surface of the intake manifold where the old gasket was. Allow 5 minutes for the RTV gasket maker to "skin" over or firm up. It sounds like the thermostat is bad.
For a step by step troubleshooting guide try the furnace page at my source. First, if you have the booklet, it will tell you what to do. Second, is it gas? Your pilot light needs to be turned on. In some cities the gas company will do this for you. How do you know if your thermostat is working properly?
My AC un it is blowing cool air, but my room temperature is not getting cooler The blower see ms to be working fine, however there is some condensation on the cooper line inside the house. Your thermostat seems to be working just fine, as does the fan or blower. Your condenser probably needs some work.
A shot of coolant would be the cheapest If you have condesation then this is a sign that the temperature of the pipe is dramatically colder than the warm air around it. The solution is you need to put insulation around it, and often insulation gets warn that it too requires replacement to be effective.
Your temperature inside the pipe could be warmer than the air around it - indication of low Freon. The cool air you feel could be warm air in motion and that is why it appears to be cool - when in fact it is warm. In any case, the insulation will resolve the condesation issue on the copper pipe - not the performance of your AC. You may need your coils cleaned or you may need freon. Cal a technician to check it out. Look in yuor phone book back in the blue section. You will find coupons there to save you some money and the cost of maintenence.
Don't know how e xp ensive it is. Your thermostat is working properly if it cycles the machine off and on around degrees of the set point. As stated earlier, measure the temperature at the thermostat with another thermometer, if the set point and the thermometer match to within approx 2 degrees your thermostat is working fine.
If not then further investigation is necessary. At least then you will know one way or another. We go through this sometime. Put a thermometer on top of the thermostat and compare the temp to the thermostat temp. If you put the thermometer on the duct, the temp will be considerably lower than the thermostat, if not, time for a service call.
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