Question about 2001 Jaguar S-Type

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Car won't warm up while running

My 1993 Jaquar's temperature will not warm up while the car is driving. The temperature gauge will go up while the car is idling but then when I start to drive it, it goes back done to cold. Any suggestion? Is it still alright to drive, or am I damaging the car in some type of way?

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This is caused by a defective temperature control device in the engine cooling system called a thermostat, fairly cheap and easy to replace, make sure u follow the shop manual instructions and bleed the air out of the system after you install the new thermostat or engine damage can result like a blown head gasket.

Posted on Feb 23, 2009

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Posted on Jan 02, 2017

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Jan 11, 2016 | Cars & Trucks

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2000 malibu runs hot if not warmed up


How do you know it gets hot? Are you going by the temperature gauge on the dash? Or have you checked under the hood and found out the engine really is running hot? ...Reason I ask is, something just doesn't sound right in your description. After just 5 minutes from starting and driving away, the engine would not yet be at normal operating temperature. That would explain the heater not yet warm. But the temp. gauge says hot?
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If your problem persists. I would have the coolant system pressure tested, and see if you could get a true temperature reading of the coolant when it seems to be running hot.
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Since you just replaced the thermostat and it still over heats there is a good chance you have air in your cooling system. You can find step buy step instructions on my tip and how to page. Feel free to take a look.

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0900c1528008f125.jpgFig. 1: View of the Engine Coolant Temperature (ECT) sensor 0900c1528008f126.jpgFig. 2: Engine Coolant Temperature (ECT) sensor locationTESTING
See Figures 3 and 4
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  2. Immerse the tip of the sensor in container of water.
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