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It sounds like the issue is with heat rejection.

The tell-tale sign is that the coolant temps rise into the red when the car is at idle (low RPM, little air flow across the radiator), but when the car moves the temps drop back down to normal.

So what could cause this? A couple of possibilities:

  • low air flow

    Are the radiator fans turning on when they should? YourAccording to eBay, your car has twoan electric fansfan and a viscous-clutch-based fan, both should be engaged and running if temperatures are climbing.

  • low coolant flow

    Could a stuck-closed thermostat be the cause for inadequate flow? Yes, but there are other more likely causes:

    • a failing water pump

    • air pockets

    • flow restrictions (e.g. clogged radiator)

    Also, I'd expect that a stuck-closed thermostat would mean that the car would still be warmer than normal when moving.

It sounds like the issue is with heat rejection.

The tell-tale sign is that the coolant temps rise into the red when the car is at idle (low RPM, little air flow across the radiator), but when the car moves the temps drop back down to normal.

So what could cause this? A couple of possibilities:

  • low air flow

    Are the radiator fans turning on when they should? Your car has two electric fans, both should be running if temperatures are climbing.

  • low coolant flow

    Could a stuck-closed thermostat be the cause for inadequate flow? Yes, but there are other more likely causes:

    • a failing water pump

    • air pockets

    • flow restrictions (e.g. clogged radiator)

    Also, I'd expect that a stuck-closed thermostat would mean that the car would still be warmer than normal when moving.

It sounds like the issue is with heat rejection.

The tell-tale sign is that the coolant temps rise into the red when the car is at idle (low RPM, little air flow across the radiator), but when the car moves the temps drop back down to normal.

So what could cause this? A couple of possibilities:

  • low air flow

    Are the radiator fans turning on when they should? According to eBay, your car has an electric fan and a viscous-clutch-based fan, both should be engaged and running if temperatures are climbing.

  • low coolant flow

    Could a stuck-closed thermostat be the cause for inadequate flow? Yes, but there are other more likely causes:

    • a failing water pump

    • air pockets

    • flow restrictions (e.g. clogged radiator)

    Also, I'd expect that a stuck-closed thermostat would mean that the car would still be warmer than normal when moving.

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source | link

It sounds like the issue is with heat rejection.

The tell-tale sign is that the coolant temps rise into the red when the car is at idle (low RPM, little air flow across the radiator), but when the car moves the temps drop back down to normal.

So what could cause this? A couple of possibilities:

  • low air flow

    Are the radiator fans turning on when they should? Your car has two electric fans, both should be running if temperatures are climbing.

  • low coolant flow

    Could a stuck-closed thermostat be the cause for inadequate flow? Yes, but there are other more likely causes:

    • a failing water pump

    • air pockets

    • flow restrictions (e.g. clogged radiator)

    Also, I'd expect that a stuck-closed thermostat would mean that the car would still be warmer than normal when moving.