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Old 09-28-2016, 10:58 AM   #1
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Temperature gauge failed

2001 chassis.
Manual gauge cluster.
Temperature gauge has quit working,

Replaced a low reading temp sensor. Now gauge not working.

Reading low 200's on scan gauge II.

Thanks
Keith
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Old 09-28-2016, 11:14 AM   #2
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I don't see a question, but are you sure the new sensor is compatible with your analog gage?
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Old 09-28-2016, 11:25 AM   #3
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Question would be , does the scan gauge get it's info from the same sensor/sender as the gauge , or does the engine have two , one that reports to the ECM where the Scan Gauge gets it's reading , and a second that only operates the gauge.

Was it a low Scan Gauge reading that you replaced the sender to correct?
Or a low dash gauge reading, that didn't agree with the Scan Gauge?
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Old 09-28-2016, 04:17 PM   #4
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My wiring diagram shows 2 elements within the sensor. 3 pins on connector:

One appears to go to a analog gauge pin (C),

Other goes to PCM pin (B) ect signal.

PCM low ref. pin (A)
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Old 09-29-2016, 09:36 AM   #5
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In 2001, a Workhorse chassis could be one of their own design, or one constructed from leftover Chevrolet P-30 components. If yours has the Chevrolet dashboard, I have found on my two examples that the coolant temperature gauges on these are notoriously inaccurate by reading too low, and a scangauge is really a better indicator of the coolant temperature.

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Originally Posted by Keitha View Post
2001 chassis.
Manual gauge cluster.
Temperature gauge has quit working,

Replaced a low reading temp sensor. Now gauge not working.

Reading low 200's on scan gauge II.

Thanks
Keith
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