Sup All,

My car is heating up, I have changed thermostat, radiator cap, radiator hose, guage sensor, coolent sensor, all were replaced by OEM parts and my car still heats up. Coolent over flows in resovor and boils. The only thing I can think of is Head Gasket or radiator. I dont have any signs of head gasket, dont have white smokes or any oil leaks. What do you guys think? Should I buy a new radiator? Also My car runs rich when its cold and when it gets hot it runs lean and A/F guage does not show any green, just red and yellow. Does this have any thing to do with my car heating up? Guys please give me some answers.

Thank you in advance.

Tony
Star Stage 2 Kit
J&E pistons, Eagle Rods

You've probably drained your coolant a million times but have you actually flushed the system? I had the exact same problem and replaced the same things but it didnt stop overheating until i flushed it.

well, I bought something from Auto Zone which was radiator flusher, Ive done that and still same thing. any other ideas?

Tony

Do a compression test first.

it could be the radiator, but it could also be the headgasket. Just because there are no oil leaks and no white smoke doesn't mean the HG isn't blown. Random, intermittant overheating problems usually point to the HG eventually.

1. Do the fans come on?
2. When was your waterpump last replaced?
3. If it is lean, what sort of fuel system do you have?

Both fans working, when ever I drive with both fans on the temp is normal, I have stock injectors with vortex fuel regulator. Alot of coolent comes out of the resovor and it boils when I turn off the car.

How much boost are you running?

Do you ever lose coolant under boost, or just driving around? Does it only overflow AFTER the car has stopped, NEVER while it's driving? Is your oil muddy? Is your coolant?

I never boost over 7lbs since I am on stock injectors, Coolent is clean, Oil is always clean and not dirty. When ever iam on the gaz and boosting 7 lbs, thats when the temp gets hot.

Tony