Question about 1991 Lincoln Town Car
Me again. Overheating 1991 Town Car. Trying to check fan clutch. Does have resistance, moves about 1/2 turn when pushed by hand, but jiggled the fan itself and it does have a small wobble. Anyone think I need the heater core flushed? Car gets hot quickly and boils and steams out the expansion overflow. ALSO, I DON'T UNDERSTAND WHY THE EXPANSION TANK (WHICH HAS A 'RADIATOR PRESSURE CAP' ON IT WHEN IT ALSO HAS AN OUTLET HOSE (FOR OVERLFOW??) THAT IS JUST OPEN TO AIR. What's the point of a pressure cap when there is an opening in the expansion tank anyway? Help!?
Your pressure cap is used to maintain pressure in cooling system.over flow outlet is to let pressure off radiator when engine overheating.if clutch fan have resistance.its good long as the silicone oil isnt leaking from it.replace your thermostat.
Posted on Jun 04, 2009
If car heats up quickly and overheats , the problem is the thermostat. The thermostat stays closed and traps coolant in the engine untill it reaches about 185 degrees , than the thermostat opens and allows coolant to flow to the radiator where it is cooled by airflow. ( airflow while driving is usually sufficient ) while idling , or in slow trafic , the fan keeps air moving through the rad. The heater core is strictly for heat in the winter inside the car. The thermostat is the most likely cause of the problem , and even if it was good before , the overheat / boil situation likely cooked it anyways. I am assuming the water pump is still getting turned by a belt. No water circulation by pump would cause same symptom as bad thermostat. Overflow and expansion bottles are designed several different ways on different cars , but the theory is that as the engine heats up and the coolant expands , it goes to the tank. Later , as engine cools down after being shut off , coolant contracts. Radiator is replenished by coolant returning from expansion bottle.
Posted on Jun 04, 2009
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Nov 27, 2013 | 1963 Peugeot 404
Nov 19, 2012 | 1991 Honda Prelude
Aug 11, 2011 | 1991 Ford Mustang
Jul 30, 2011 | 2005 Peugeot 405
Jul 13, 2011 | Lincoln MKZ Cars & Trucks
Mar 01, 2011 | 1991 Lincoln Town Car
Jul 30, 2010 | 1991 Lincoln Town Car
May 29, 2010 | 1998 Lincoln Town Car
Jan 21, 2010 | 2006 Jeep Commander
Jul 05, 2009 | 1988 Toyota Pickup
Jan 14, 2016 | 1991 Lincoln Town Car
299 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: