Hotter the Faster I Go

[Prdbyford1]

My 95 GT is having hot flashes. I have changed the head gaskets and thermostat not even a year ago (hardly any miles, car has sat for a bit). Every time I driving the temp goes up to as high as 240 last night and it was only 70 degrees out. I thought maybe the thermostat was sticking since the car has been sitting for awhile, and it was working fine. I have a 90 inch belt on it (no smog), stock stat, fan works, and has been burped. Only thing I can think of is that the water pump is going or that the cap or radiator is bad. I have found no leaks so I do not believe that the radiator is bad because I have found not leaks. Any ideas? First it was the brakes, and now we are backing to cooling issues.

 

[Addermk2]

get the car warm and feel around on the radiator for cold spots

 

[ivan12]

What does it mean when you have a cold spot? Rad is bad?

 

[LAFENATU]

Did you put the head gaskets on backwards? Thats the first thing that comes to mind. I had a friend that swore up and down that the gaskets were put on correctly..

I pulled one spark plug and a sh1tload of coolant came out...whoops lol.

 

[Addermk2]

What does it mean when you have a cold spot? Rad is bad?

yes, it means there is uneven flow across the cooling surface, usually caused by a blockage = replace radiator

 

[toyman]

When was the last time the cooling system was flushed and fresh anti-freeze added? This should be done every 2 t0 3 years. Just replace the cap. It needs to hold pressure to 16 psi. I would do both of these before replacing any "spendy" parts.

 

[2slo95fiveoh]

When was the last time the cooling system was flushed and fresh anti-freeze added? This should be done every 2 t0 3 years. Just replace the cap. It needs to hold pressure to 16 psi. I would do both of these before replacing any "spendy" parts.

X2

 

[Addermk2]

When was the last time the cooling system was flushed and fresh anti-freeze added? This should be done every 2 t0 3 years. Just replace the cap. It needs to hold pressure to 16 psi. I would do both of these before replacing any "spendy" parts.

I wouldnt bother replacing the coolant if the radiator has cold spots..

free tests > cheap fixes > expensive parts

 

[94RockinGT306]

i agree with the radiator being blocked up with junk , if not then i would bet on a faulty thermostat. Just cuz you changed it awhile back doesn't mean that it isnt defective. I work at a parts store , trust me. I would change the radiator , flush the radiator and block , and add new coolant and see what happens. Then if it still runs hot you need to start tearing it down and figure out whats going on. You should run a compression check and see if maybe you dont have a blown head gasket , it could be leaking on the exhaust side if you dont see it in the oil. If everything is good then i would bet on the water pump.