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1998 Lexus LS400 Lexus overheating

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Hi Scotty, I have a 98 model lexus ls 400 , and it overheats when the car is stopped. The radiator is new and also not leaking at all, tell me what to do.

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5

Install new thermostat and check operation of cooling fans.

2

Overheating issues are tricky because it can be only 1 thing among many...

  • Check the radiator fan itself;
  • Replace the coolant if its old;
  • Check/Replace thermostat and water pump;
  • Rare to happen, but maybe some tubes/air filter might be clogged/dirty?
  • Or to make it easier, if possible, scan any error codes first and see if they detect something wrong.

Most importantly, take it to a mechanic and make sure it doesn't overheat during the diagnosis! A small mistake can cause permanent damage.

how do dirty air filters cause overheating exactly?

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