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1990 Lexus LS 400 Overheating

Tiny
NICKYNLONO
  • MEMBER
  • 1990 LEXUS LS 400
  • V8
  • 71,833 MILES
We bought a 1990 lexus ls400. When we start the car the 2 front fans start to run but then shuts off. Into 15mins of driving the temperature will start to rise a bit fast to high the line right before the h. We pull over pop the hood and there is a little smoke coming from the front driver side. We changed the thermostat and was told to change the temp sensor. Have any idea on what might be the problem?
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Saturday, January 25th, 2014 AT 6:21 PM

3 Replies

Tiny
KNOWLEDGE IS POWER
  • MECHANIC
  • 1,136 POSTS
I agree with that. The temp sensor tells the electric fans to come on when a certain temp is reached. Check to make sure its plugged in before you buy a new one. Its usually in the tstat housing or the radiator. It'll look like a brass bolt with a plastic plug coming out of it that the wire is plugged into
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Saturday, January 25th, 2014 AT 7:28 PM
Tiny
NICKYNLONO
  • MEMBER
  • 6 POSTS
Ok thank you! I will try to check that and see if it turns on.
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Saturday, January 25th, 2014 AT 8:23 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Try the sensor as it may not be do;ing it 's job. See pic
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Sunday, January 26th, 2014 AT 12:31 PM

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