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AC question

Tiny
IVAN.CRUZ
  • MEMBER
  • 2000 LEXUS ES 300
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 56 MILES
Lexus ES300, A\C recently started getting warm. I have noticed in a short observation that the AC operates very cold while driving. At a stop or stand still the AC intermittently blows between warm and cold air. Notably, if the AC is on at a stop or parked the engine temp rises. What are these symptoms a sign of? Aloha, Ivan Cruz, ivan. Cruz@itsecuritysolution. Com
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Tuesday, July 5th, 2011 AT 6:44 PM

4 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
The first thing to check is to see if the fan is operating properly. After that you need to get a set of professional gauges and get readings on the high and low pressures both at idle and 2,000 RPM.
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Tuesday, July 5th, 2011 AT 6:57 PM
Tiny
IVAN.CRUZ
  • MEMBER
  • 3 POSTS
Yes, I have noticed that the fan/auxiliary fans are not turning while the engine reads hot (warmer than normal operations). Other than the high/low pressure test what do you think of that? Mahalo, Ivan
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Tuesday, July 5th, 2011 AT 7:16 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
It's going to have to be troubleshooted to find out why.
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Tuesday, July 5th, 2011 AT 7:52 PM
Tiny
IVAN.CRUZ
  • MEMBER
  • 3 POSTS
Will do. Thanks again. Aloha, Ivan
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Tuesday, July 5th, 2011 AT 8:05 PM

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