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Re: 5.9 litre 12 valve Cummins cold start
Posted to HD/Fleet Forum on 8/9/2024 2 Replies

Hi Michael,

These 5.9L 12V engines were made between '89-'93 according to online information, so the PCM may not be a good source for dating this machine. Maybe the machine had a 24 valve in it and has been swapped at some point?

As I recall the intake hea... Login to read more.

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