First replace the thermostat.It's a cheap part and it's could be just stuck..Second when Is the last time you replaced the coolant? I would start by replacing the thermostat..

forst thing I woud do is pop the hood, then remove the rad cap (COLD) then start the car and rev it.. if water/coolent gysers from the rad.. good sign of a blown HG

where is the thermostat? under the radiator cap?

Thermostat is yes under the cap..But its actually under the water neck..I think two 12mm bolts is all it takes to remove it..

If the needle is shooting up quickly, i'd go with the temp sender and thermostate. Sounds like an indication problem

BogusSVO said:

forst thing I woud do is pop the hood, then remove the rad cap (COLD) then start the car and rev it.. if water/coolent gysers from the rad.. good sign of a blown HG

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Really?? I did this after a HG change and thought it was the water pump just pushing the coolant.

IDK, this was 4 months ago. Still holding strong.

the little water neck? or the bigger one?

Sounds like you should bleed the coolant first. Sounsd like air in the system to me.

Just dealt with this myself. My t-stat was stuck and the radiator cap was expired (the rubber gasket was corroded).

Circled in red is the thermostat housing and the radiator cap you should check. You could also be low on coolant. When you remove the cap, you should be able to see green coolant. If not, you're probably low. If you're full up on coolant and your cap looks all right, then you'll need to drain the radiator via the small plastic plug at the bottom on the driver's side.

You're sensors could be shot or have a loose connection. Does the fan still come on when it gets hot?

it was the thermostat, and she is now fixed and running

Glad to hear it

97gst_spyder said:

Really?? I did this after a HG change and thought it was the water pump just pushing the coolant.

IDK, this was 4 months ago. Still holding strong.

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97gst spyder...... not an inch or so over the filler neck... I am saying like a foot up in the air, if the HG has let all the compresion in to the cooling system it will shoot wayyyyyy up

BogusSVO said:

97gst spyder...... not an inch or so over the filler neck... I am saying like a foot up in the air, if the HG has let all the compresion in to the cooling system it will shoot wayyyyyy up

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Same thing happens, only with oil and sideways out of the car, if you forget to put the oil plug bolt back on the passenger side of the head.

Glad to hear that you got it resolved, Goat.