Help with code 64
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Lead Driver
Joined: Oct 2016
Posts: 6,185
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From: Houston/Sugar Land
Help with code 64
64 Intake Air Temperature (IAT) or Vane Air Temperature (VAT) signal low or grounded - IAT VAT
I just ran KOEO codes and all clear CM clear KOER I'm only getting code 64. I have no symptoms and no cel, Without symptoms what would I check first to fix this code? Thanks Sandy
I just ran KOEO codes and all clear CM clear KOER I'm only getting code 64. I have no symptoms and no cel, Without symptoms what would I check first to fix this code? Thanks Sandy
Lead Driver
Joined: Feb 2002
Posts: 7,970
Likes: 595
From: Greater Austin, Texas
IAT sensor on SD 460 is in the intake manifold on the left side just in front of the TB adaptor. You should check it with an ohm meter. Consult your service manual for the correct spec.
Lead Driver
Joined: Jan 2019
Posts: 5,083
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From: N.W. Alabama
this one shows what resistance and voltage should be, when its cold and when it warms up, to see if its in range.
Fuel Injection Technical Library » Air Charge Temperature (ACT)
Fuel Injection Technical Library » Air Charge Temperature (ACT)
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Lead Driver
Joined: Oct 2016
Posts: 6,185
Likes: 633
From: Houston/Sugar Land
Thanks for the link torq'ta, that is the one I didn't have in my folder and I couldn't find it. Anyway it was toast and I replaced it today and code is clear and truck is running great. It only lasted 29 years so they just don't make em like they used to. 
Sandy
Sandy
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