Question about 1995 Lincoln Town Car

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I have a 95 town car with no heat. The hoses running into and out of the core are both hot. How do I check the vacuum system to make sure it is not stuck in the vent possition?

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Trace the vacuum lines at the firewall in front of the passenger side. This is where the vacuum system starts on the other side of the heater core. Follow the lines backwards and look/listen (turn heat on high) for leaks. Spray them with a little soapy water and look for bubbles. Also look for any frayed ends (a common problem). If you encounter a frayed end, simply clip the bad end and reattach.

Posted on Dec 10, 2009

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These s10 s have problems with the heater core plugging up, you said you cleaned the core, you used a water hose to flush the core at the core and flushed going both ways a few times, the cooling system even with a bad thermostant will put out heat it would just take a while so your saying theres no heat at all so that eliminates the thermostat, make sure the system is bleed of all air and try runniong the eng with heater hose to core removed and see if coolant flows out of the hose. this is to make sure the pipe is clear to allow coolant flow. also check and see if both hoses at core are hot, if one is hot and the other cool then the core may be plugged.if both hoses are at the same temp then you may have a blend door problem. i have seen the vacuum line that controls some of these that still use vacuum to control blend door instead of actuator have a broken vacuum hose at the engine at intake area. if the vacuum hose is off or broken then cool air is all you will get. check around the intake, theres a vacuum line that runs to the firewall on the pass/side and goes inside, make sure that line is connected and has vacuum. good day

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Feel the hoses going to heater core, one should be hot and the other warm. If one is cold or both are then heater core is clogged. Make sure heater control valve works and as vacuum to it and or the cable is free.

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It sound's like one of two thing's, first open the glove compartment look behind to the left you will see a clear vacuum line going to a goldish in color accuator remove it once the vehicle is at normal operating temp. if you get heat then you have a problem with the vacuum switch, just plug the vacuum hose, you will have to reconnect it in the summer to get the AC working. The other problem could be the heater control valve, located under the hood inline on the hoses going to the heater core, upper passenger side of the fire wall.

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