Quote:
Originally Posted by ProjectM96
Hello everyone, The temperature was always a little high on my Boxster between 190 and 195 degrees F. I believe the 986 Boxster engine operating temperature should be 186.5 degrees F in the middle of the gauge. Is it normal for the temperature to be slightly passed the middle on the temperature gauge? I bought the car 8 months ago and since then drove 4000 miles with no problems until last week.
Last week, my 00 2.7L overheated. The temperature warning light went on around 205-210 degrees F(Needle at 3/4 line of temperature gauge). All the coolant leaked out. It happened at the end of a 3 hour drive(160 miles) just minutes from my destination. Filled the coolant/antifreeze tank twice and drove a short distance about 1/2 mile before it over heated again.
Towed it to a mechanic. He could not find any problems with the newly replaced water pump. He said the thermostat was fine. His Guess to the solution was to close the coolant/antifreeze cap tighter to prevent air from getting into the system.
After he tightened the cap, I drove the car for 30 minutes about 15 miles normally driving without pushing the end hard. It seemed to work. The temperature was moving from high to low often reaching 197-200 degrees almost at 3/4 the temp gauge, then cooling down at red lights back to around 190-195. The warning light did not turn on, but I wanted to drive harder to see if the warning light will tell me it is overheating.
Then I tried driving the car very hard revving to the redline for 1 mile, but temperature did not go any higher, which was good news.
But is it normal for the temp needle to be passed the middle on the gauge? Is it normal for the engine to reach about 200 degrees F?
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My '99 Boxster had 74K miles on it when I bought it and it ran just a hair above 180F deg. for 10K miles. I had the LN ceramic IMS bearing installed and a new RMS and after that the temp went up to as high as 199F deg. It fluctuates between 185-199F deg. but has never gone over 200 mark even on the hottest days and longest drives. Both my fans are working and after the car started running at the hotter temp I had the water pump replaced but not the thermostat. The radiators were blown out but not cleaned with front bumper off. The car seems to run fine at these temps and I can't see anything about the IMS replacement that would cause temp to go up so that must be a coincidence. I've also installed mesh grills over the front inlets to keep out debris.