Overheating My 1994 probe gt is over heating and it aint the thermostat and i was just wondering wat else shuld i check???

Next to do is to have a compression test done to check for a head gasket or cracked head problem. IF you have a viscous fan hub attached to the fan then replace that if the overheating occurs at low road speed with high engine rpm or stopped at lights and idling. It may appear to be working when you look at it but it will not drive hard enough to pull air through the radiator when needed.

Run the car without the thermostad to see if it still overheats. If so check the heat sensor it might be faulty.

is your vehicle over heating after you start it and run it for a short time, or doe's it take more time for it to over heat. > it could be your thermostat, thermostats are normally the 1st thing that people should check due to over heating problems on their vehicles, also check the top and lower radiator and the heater hoses to make sure that they are not collapsing, then i would check the coolant temperature sensor, it is normally located on top of the intake manifold , or close to the thermostat housing, also check your electric fan to make sure it is operating correctly, once a engines normal operating temperature has been reached, the fan will kick on in order to keep the engine from overheating, hope that this information has helped you.

high speed overheating are a good indication. something is wrong with radiator. check coolant level, make sure the fans are working, and check radiator for broken fins or dirt and debris in radiator fins. if air is not going through radiator, it will over heat. if all is fine. replace radiator cap to see if this fixes problem. but check radiator fins first for debris.

The thermostat is in the coolant pipe above the transmission. The large metal pipe coming up from the lower rad hose attaches to the thermostat/water distribution block, this is located under and to the engine side of the air-filter box.

There are a couple bolts holding the pipe to the block, and the thermostat is located right at this flange. If the vehicle overheats, even if the rad fans come on, it is likely that the thermostat is not opening. If the vehicle never heats up fully, especially on cold days, it is possible it is stuck open.

Once out of the car, a thermostat can be checked by placing it in hot water (for this car usually over 180 deg F/ 82 deg C) and it should open.

is your heaters blowing hot or could?

Did you run the engine with rad cap off & heater (not defrost) on while topping up the coolant. If not, do it & let it run that way until your rad fan comes on & off about 3 times, then top rad up to a inch or 2 from top, and put cap back on, & check level in return bottle.

The first thing to do is have is the radiator cap checked, if it's alright then check to see if the thermostat is opening. You will need to remove the thermostat housing to remove it. The temperature the thermostat is suppose to open at is stamp on it. Heat a pan of water a few degrees above what it is suppose to open at and put the thermostat in to see if it opens,

VERY Probable! You need to get that Probe to a Mechanic and have it Diagnosed. You can also Purchase a Diagnostic tool for the Computer at Any Good Auto Parts Store and Try this yourself! This is Most Definitally a Computer Error Code Problem.

If your thermostat aint seized shut, its your heater core. You need a new one. Your heater core is another element that makes the antifreeze move in a circular motion. If it aint moving in a circular motion, your car is overheating, meaning that it could be your thermostat, heatercore, or waterpump, but I think that its your heater core. If it is your water pump, your check engine light would come on.