1995 Lexus LS 400 Temperature Gauge

1995 LEXUS LS 400
182,000 MILES • V8 • 2WD • AUTOMATIC
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STEVELS400
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  • 2 POSTS
Temp Gauge was working fine then nothing.
Gauge works by shorting.
Replaced sender and gauge rose to between nil and quarter (previous normal was half) when at full operating temp.
Filled expansion tank to max and have been running with gauge getting to half way to quarter for 3 weeks. No problem.
Yesterday on a long high speed run, gauge fell to nothing again. No problems and expansion tank still full.

Am now at a loss as to what to do.
Jul 23, 2009 at 1:54 PM
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BLUELIGHTNIN6
  • ✓ASE Certified Mechanic
  • 16,542 POSTS
  • ASE Certified Mechanic
suspect faulty engine coolant temperature (ECT) sensor, located on top of intake manifold , below the IAC valve
Jul 23, 2009 at 2:18 PM
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STEVELS400
  • MEMBER
  • 2 POSTS
[quote:69a55544b5="bluelightnin6"]suspect faulty engine coolant temperature (ECT) sensor, located on top of intake manifold , below the IAC valve[/quote:69a55544b5]

This has been changed in an attempt to solve the problem. It didnt
Jul 24, 2009 at 4:26 AM
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