Overheating issue
#1
Driver School Candidate
Thread Starter
Overheating issue
I have a 1998 Lexus es300 and when I drive the temperature gauge is showing the needle in the middle which is good but when I come to a light I notice the needle rising to high but when I start driving again it goes back down to normal temperature. Also when I am parked and the car is running same thing, temperature starts rising. Any ideas on what it could be?
Thanks
Thanks
#2
Racer
iTrader: (2)
Can you observe the fan running when the car is idling and starting to get hot? If should be and if not, that may be your issue, the fan is either dead or the sensor is.
If the fan is running, you then looking at the rest of the system. I assume you have checked the coolant level and quality? Dirty or low coolant is a real issue and needs to be addressed. Might be time for a flush.
After that, you are looking at radiator issues or the thermostat.
Good luck.
If the fan is running, you then looking at the rest of the system. I assume you have checked the coolant level and quality? Dirty or low coolant is a real issue and needs to be addressed. Might be time for a flush.
After that, you are looking at radiator issues or the thermostat.
Good luck.
#5
Lexus Fanatic
Yep check the basics and report back.
#6
Also check for severe bug denting to the AC condenser fins in front of the radiator that would block air flow to the rad. Also shine a strong light through the rad and see if you can see the light from the front to check for bird feathers, etc that made it through the condenser and are blocking the radiator.
#7
Driver School Candidate
Thread Starter
Right after I posted the thread my check engine light came on. Took it to autozone and the error given was for the thermostat. Today I had time on my hands so I flushed the radiator (made a huge mess) did a whole system cleaning and new thermostat. Took it out today and it ran fine, but today was pretty cold outside so I'll run it again on a warm day just to be sure.
Thanks for all the input and help guys!
Thanks for all the input and help guys!
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#8
Driver School Candidate
Thread Starter
I'm having another problem now guys, when I'm driving my heater works fine but when I get to a stop the heater stops working and it blows hot air. Any ideas?
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