Car doing something weird...

Hey guys,

My car seems do be doing something strange, If I accelerate quickly I see the temp guage move up to hot very quickly and cooldown very quickly, the process only takes a second. also If I dump the clutch it does it as well.

Now if I drive the car normaly this does not happen. I'm thinking that my rad is to blame because i had a cooling problem with my old motor.

any thoughts ?

I'd put my money on the water pump going bad. That same thing happened to me, and it was the pump.

Very similar thing happened to me, had to replace my radiator...

just replace everything that way u dotn gotta deal with it later