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Posted on Nov 14, 2017
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I have a 2000 pontiac sunfire and the coolant light was coming on Friday and the temperature guage was going up like it was overheating. I was really low on coolant so I filled it up and the temperature gauge isn't going up anymore but after I have been driving for a little while the coolant light pops back on. It goes on and off

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rick shrider

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  • Posted on Nov 14, 2017
rick shrider
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Your coolant leaked somewhere, look for leaks. Hopefully it isn't the head gasket,.

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Anonymous

  • 67 Answers
  • Posted on Aug 27, 2008

SOURCE: check gauges light

Possible bad guage, bad wiring, or bad sending unit. Check each one independently of each other, start with wiring first, then sending unit.

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Anonymous

  • 160 Answers
  • Posted on Nov 12, 2008

SOURCE: low coolant light comes on

if the van is not overheating and the coolant is full than your sensor is bad

Anonymous

  • 55 Answers
  • Posted on Dec 16, 2008

SOURCE: Engine temperature gauge reading on

It may be the thermostat

Anonymous

  • 6784 Answers
  • Posted on Mar 13, 2009

SOURCE: 2000 Sunfire coolant problem. Engine overheating,

ok, its time for a radiator flush. there is major sludge in the internals of this radiator. Make sure the thermostat is in the correct position as well. I've seen many cars come into my shop with the thermostat inserted backwards.

Anonymous

  • 1 Answer
  • Posted on Oct 02, 2009

SOURCE: 1996 Pontiac Grand Am overheating

my 96 grand am keeps overheating after i have changed my thermostat and water pump

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Hello, bigdaddypsl and thank you for asking your question on Fixya!

Here is a simple process that will walk you through a few steps that will pinpoint the overheating problem on your 2002 Pontiac Sunfire, without even using any tools. It has helped millions of people, and I am certain that it will help you, because I wrote it for people in your exact situation.
How to diagnose your overheating 2002 Pontiac Sunfire

Get more great money saving tips and tricks about your vehicle from: twitter.com/acoates23234

Thanks for the vote, and good luck!
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Nov 04, 2010 • 2000 Pontiac Sunfire
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02 sunfire overheating
make sure you have radiator full of coolant
run the car to operating temperature
check the operation of the cooling fan
feel the upper radiator hose and the lower radiator hose. they both should be hot.
if one is cold then you may have a bad thermostat or restricted flow
if cooling fan does not come on when engine is hot then you have bad cooling fan switch, relay or motor.
good luck
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Mar 07, 2010 • 2002 Pontiac Sunfire
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What can cause overheating in a 2000 pontiac sunfire
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Fuel tank level is giving a wrong reading
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ok, its time for a radiator flush. there is major sludge in the internals of this radiator. Make sure the thermostat is in the correct position as well. I've seen many cars come into my shop with the thermostat inserted backwards.
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