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Replying to Thread:

C12 engine fan no slowing during cold idle


Created On Sunday 4, February, 2018 12:49 PM by rwillert7

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Diesel Talk Forum

rwillert7
Diesel Talk Forum
Posts: 1
Joined: Feb 2018

Note Sunday February 04, 2018 12:49 View thread in raw text format
Diesel Talk
I have an '02 KW with a Cat C12. Engine won't heat up to operating temp because fan won't slow all the way to cold idle speed. It will speed up when the manual switch is turned on but won't slow all the way down to usual slow speed. We have a new thermostat but haven't replaced it because I don't think that is the problem. Any ideas of what to look at or check before we tear into anything we don't have to. Also, been getting some moisture on back side of fill cap and I'm thinking it's because of the colder operating temps when not pulling a full load.

Thanks

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rwillert7
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