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?
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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