1998 Lincoln Town Car Overheating

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DOGDOG
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  • 2 POSTS
Hi,
Have a 1998 lincoln town car cartier edition. About 100,000 miles. It has been overheating a couple of times. Had the thermostat replaced. The air conditionor compressor started smoking. Had it replaced and system charged. Over heated again. The temperature gauge is not going over half way up. Checked the fan, not coming on. Ran hot wire to fan, fan motor is ok. Bought an engine coolant temperature sensor, can not find where it goes into engine??? It is not by the thermostat neck. Looked under, right side, left side of engine. See what looks like it, in the center of the engine on top into the head, dealor said that was the engine head temp sensor, not the coolant sensor. Need some help and some ideas of what to do. Does this 4.6 liter engine even have a coolant sensor??

Thanks.
Sep 11, 2006 at 1:30 PM
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2CARPRO JACK
  • ✓Experienced Mechanic
  • 11,533 POSTS
its in the intake on the crossover in front
Sep 12, 2006 at 8:05 AM
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DOGDOG
  • MEMBER
  • 2 POSTS
Thank you for the help. Fixed it today. The plug going into the fan had a short in it. Fan was just running every once in awhile, causing it to overheat.
Sep 13, 2006 at 2:10 AM

Suggested Repair

Repair the shorted cooling-fan connector so the fan runs consistently. The engine coolant temperature sensor is in the intake crossover at the front, not the cylinder-head temperature sensor on top of the head.

Conversation Summary

A 1998 Lincoln Town Car Cartier with about 100,000 miles overheated after thermostat and A/C compressor work. The temperature gauge stayed near halfway and the cooling fan did not come on, although the fan motor worked when powered directly. The owner could not locate the coolant temperature sensor; the dealer identified a top-center sensor as the cylinder-head temperature sensor. An expert said the coolant sensor is in the intake crossover at the front. The owner later reported the fan plug was shorted, so the fan ran only intermittently and caused the overheating.

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