1986 Plymouth Reliant cooling problem

1986 PLYMOUTH RELIANT
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GAMEGUY
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1986 Plymouth Reliant 4 cyl Front Wheel Drive Automatic 200k miles
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when the car has warmed up, the temp indicator is in the normal range. every so often, the temp indicator goes 2/3 of the way up to max, stays a while then comes back to normal. what would cause this type of problem since it just started doing this? thank you for your kind attention to this matter. gameguy
Jan 3, 2008 at 10:29 AM
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MERLIN2021
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Check the coolant level, if it's low you may have an air pocket. If it's ok you may need a new sending unit.
Jan 3, 2008 at 10:32 AM
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KCARNICK
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I had the same problem, I needed a new thermomerter
Feb 22, 2009 at 4:06 PM
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MERLIN2021
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Thermostat? Yep also a posibilty.
Feb 23, 2009 at 2:27 PM