overheating problem!

[1988_gt_mustang]

88 mustang 5.0 1:6 roller rockers, mass air, headers, exhaust, 3:73 gears, smog delete, a/c delete

alright well i have been having an overheating problem for a couple weeks now and here it is......ok its runs fine when driving normal watch the temp go up and thermostat opens n she drops but when u get on it for a little bit ( warm up the tires and a race) it jus pegs at 270+.....new water pump in it still does it....new radiator( big c&r 3 inch)still does it...stuck another thermostat in it seemed to help for a little bit but now its doing it again...jus looking for someones opinion...

Thanks
Cory

 

[00sonolow]

Maybe its that lower hose?


hahahahahahahahahahahaha


:secret:

 

[1988_gt_mustang]

haha georgies auto custom desiegn??

 

[Detroit Style Dragger]

Worst case, it could be a head gasket.

 

[00sonolow]

haha georgies auto custom desiegn??

One off hoses by George.



Your welcome Mr. Nova radiator.

 

[1988_gt_mustang]

Worst case, it could be a head gasket.

kinda thought that but its runs fine, not leaking into oil at all, no white smoke....

 

[Detroit Style Dragger]

Check your hoses, and bleed the system again.

Does the temp go down if you open up the heater core? Are both heater hoses equally warm?

 

[1988_gt_mustang]

ya both equally warm temp gopes down with heater core open just driving regular but doesnt matter when it starts getting real hot

 

[00sonolow]

did you check the turbo?


its either that or the supercharger....

 

[Detroit Style Dragger]

The pump may be wrong. It sounds like its just spinning, instead of pushing the coolant through at high rpm.

 

[hangem high]

Make sure the belt routing is correct, I know it sounds dumb but it can cause this issue.

 

[1988_gt_mustang]

The pump may be wrong. It sounds like its just spinning, instead of pushing the coolant through at high rpm.

ya the first one i put on was spinning, so i put another one on there and its good i just pulled the return line off and pulled out the thermostat and its pumping water through..

 

[Rod442]

mine was doing this untill the HG went bad big time. at first would just run a little warm; but if I was moving it was ok. then I would come to a stop, and then it would run hotter. pressure test the coolant system and make sure you have no leaks; then do a compression test to make sure there isnt a HG problem.

If thats ok, and the coolant is flowing well; then it might be your fan setup.

 

[TwilightBlu92]

That or either you have some bubbles in the system.

 

[avbcon12]

stock gauge? if so use a real gauge to measure, its definitely NOT get that hot or youd be boiling your coolant.