I was wondering if anyone might have a suggestion on solving my overheating problems.

Whenever I drive the car after a few good hard runs say from boosting and I stop and let the car idle. The temperature gauge will start to climb up into the "H." I have flushed, drain, changed coolant and even have the radiator fan on a switch that I keep running when Im sitting in traffic or the car is not moving. It only does this though if the car has been boosting alot. Now if I turn the heat on inside the car the temperature will drop. It did when I didnt have a intercooler, and I thought that might be the problem but now I put that on last week. and I noticed it still doing it. My piping is not like it used to be as far as heat wise I can definately tell a difference in the intake temperature from the intercooler now. I thought taking my car to be intercooled would solve the problem of overheating but it didnt. Anyone have any suggestions on this.

Also would a blown headgasket have anything to do with the overheating problem. Im sure it would but it seems like the car would be doing it all the time. I did a compression test a while back and it seemed fine the numbers came out good. The coolant doesnt boil over if it starts to creep up. The cars got about 50,000 miles on it. Is the stock radiator and fan not enough to put the heat down? Like I said it only does it if you drive it hard and let it sit and idle. Sometimes taking it easy and normal driving will prevent it from creeping up into the "H" mark. I like to figure the problem out because I need a turbo timer and Im afraid if I let the car sit after I run it I dont want it to sit there and boil over.

 

get a new thermostat

 

thermostat and radiator cap 1st. if not, sounds like you need a new radiator/higher flower fan and maybe even an oil cooler for added cooling and safety. turbo cars are going to run hot when constantly boosted and when you come to a stop, there is no more wind cooling the radiator. i would say, if the circumstances alow, after every session of boosting hard, dont let the car sit: drive it with out hitting boost for a while till it can cool off.
so get a radiator and fan, that should be fine, if there are still signs of overheating, get the oil cooler. they will help greatly
-Chris

 

mine was doing that and it was the headgasket leaking. I wasnt getting white smoke under acceleration, but i swapped the gasket as a last resort and it fixed the problem. I think it was seaping through somewhere under boost and putting all the pressure in the cooling system.

 

mine was doing that and it was the headgasket leaking. I wasnt getting white smoke under acceleration, but i swapped the gasket as a last resort and it fixed the problem. I think it was seaping through somewhere under boost and putting all the pressure in the cooling system. Also mine didnt show up bad on the compression test, so you cant rely on that

 

A turbo adds like 80-100 degrees to your oil if I remember right, and oil cooler would seem like a smart thing to get.