overheating, what can it be? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

autobahNESSA · 06-14-2003, 11:55 PM

Okay here's the deal, I got an sr. stop 'n go traffic no problem. can drive it for hours in it, flooring it. Freeway runs, no overheating as long as below 3k. Car go for 2 hours with no overheating. Freeway above 3k for 1.5 hours, and then it starts to get warm. Driving hard in the mountains 20min, the car is overheating.- or really hot.

Have new water pump, the thermostate is working because the lowe radiaor hose gets hot. 50/50 mix of anti freez and coolant. The thing is wierd the most is it only overheats when the turbo is constantly spooling. I thing above 3k the turbo is makeing some boost even when im just cruzing. I am not sure because i dont have a guage. So what can be causing my engine to overheat?

06-14-2003, 11:55 PM	#1
autobahNESSA Zilvia FREAK! Join Date: Aug 2002 Location: Milpitas/Irvine, CA Posts: 1,257 Trader Rating: (3) Feedback Score: 3 reviews	overheating, what can it be? Okay here's the deal, I got an sr. stop 'n go traffic no problem. can drive it for hours in it, flooring it. Freeway runs, no overheating as long as below 3k. Car go for 2 hours with no overheating. Freeway above 3k for 1.5 hours, and then it starts to get warm. Driving hard in the mountains 20min, the car is overheating.- or really hot. Have new water pump, the thermostate is working because the lowe radiaor hose gets hot. 50/50 mix of anti freez and coolant. The thing is wierd the most is it only overheats when the turbo is constantly spooling. I thing above 3k the turbo is makeing some boost even when im just cruzing. I am not sure because i dont have a guage. So what can be causing my engine to overheat?