Questions & Answers for: engine overheat high speed Cars & Trucks

engine doesn't overheat. But once I stop it at traffic lights for long during busy hours, it overheats. What are the posible causes of a fan not functioning. How can I solve this? By the way, I bought

Engine overheating at high rpms My 2003 Jeep Wrangler (6 cylinder) overheats at at highway speeds. I've replace the fan clutch, the water pump, the serpentine belt, the thermostat, and most of the ...

...engine doesn't overheat then it confirms that the low speed on the fan motor is not working. Read the description of the Taurus where the low speed is used for normal operation when temperature is ...

...engine is running at low speed ok at high rev. Waterpump or thermostat?? Water pump is bad because overheats when engine is running at low speed, and good at high rev. The water pump impeller can not ...

...engine continues to overheats; It happens when the AC is on and while at idling. No leaks. No head problem. Any idea anyone? Thank you/ Check to see if the electric cooling fans are working.  ...

engine will overheat. If you turn the ac on then the air rushing around the engine will help cool it down. Replace the thermostat and it should fix it This can be due to a high speed fan relay failing

...overheat i dont see the fan running at all!!. Any idea or help please? You can use this VAS 5054A to do the troubleshooting. It is good at diagnosing your Jetta. you should have 2 x fan switches on ...

Engine overheat at high speed Engine overheat at high rpm If you have a viscous fan hub on the fan then replace it . If there is no thermostat in the engine cooling system the replace it . Check the ...

...Overheat? Overheating going uphill and high speed only. On stop and go traffic, no problem. Possible thermostat faulty, Thermostat automatic, stays shut, till water reaches correct temp, if it goes ...

engine block. Knowing the conditions that cause the overheat would help diagnose, here's some basics--assuming the coolant is full. Only overheats at low speed is generally an airflow problem: fan not