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Old Feb 24, 2022 | 08:56 AM
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ECT sensor

Can anyone tell me if there is a engine coolant temperature sensor for the ecm on my 01 7.3 or does it use the same sensor as the dash gauge? When using forscan the ECT temp starts out high then works it's way up to around 500° before falling back to 0 then slowly climbing to the correct temperature. Meanwhile the dash gauge stays normal. Hello everyone, I have been a member on here for quite a few years. Now that I logged in using Google account all of my data is missing.
 

Last edited by T. Bix; Feb 24, 2022 at 08:57 AM. Reason: Engine size
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Old Feb 24, 2022 | 09:00 AM
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Originally Posted by T. Bix
Can anyone tell me if there is a engine coolant temperature sensor for the ecm on my 01 7.3 or does it use the same sensor as the dash gauge? When using forscan the ECT temp starts out high then works it's way up to around 500° before falling back to 0 then slowly climbing to the correct temperature. Meanwhile the dash gauge stays normal. Hello everyone, I have been a member on here for quite a few years. Now that I logged in using Google account all of my data is missing.
Your 2001 does NOT have an ECT sensor capable of being read via the OBDII port. The PID you are viewing is providing erroneous data.

Only the 2002+ ZF6 7.3L has the ECT PID.
 
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Old Feb 24, 2022 | 09:05 AM
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Thank you 👍
 
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Old Feb 25, 2022 | 01:31 AM
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What Sous said. AT trucks will get engine temp from the oil, not coolant. Dash gauge is a separate dedicated sensor, does not run thru the PCM, on both AT and MT trucks.
 
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