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bowhunter72 04-06-2021 07:49 PM

No start
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Got a Cat C12 2KS04626, engine will not start, got a flash code 34, engine speed sensor, this may explain the random "Hiccup" i get from time to time while driving. I am hoping someone out there has messed with this issue before, all the diagrams say the sensor is located on the front cover, but i got no sensors on the front cover. I did however manage to find this little bugger sitting on the bottom of the engine right in front of the oil pan directly under where the crank would be. i know the engines in the pushers may be assembled a little differently. I called a few diesel shops and they are unsure as well seeing as how i am also supposed to have 2 of those sensors but there is only one.

bowhunter72 04-06-2021 08:01 PM

May have juts figured it out, some one juts sent me a diagram, this particular engine does not use the 3 wire, it used the 2 wire and the 2 wire is located under the engine and the cam sensor is behind the front cover.

denforent 04-06-2021 08:07 PM

But did ya get it to start>>>>>>>

bowhunter72 04-06-2021 08:17 PM


Originally Posted by denforent (Post 5703438)
But did ya get it to start>>>>>>>

No not yet, from my understanding the crank sensor is the secondary sensor, it is used for starting, once the engine starts, the primary sensor, which is the cam sensor takes over. so i am looking at getting the crank sensor out and run my multi meter on it and see if its stuck open.

bowhunter72 05-12-2021 09:55 PM

Anyone know what is causing this while cranking? this is my fuel pressure.

CountryB 05-13-2021 05:34 AM

Watch this video.

bowhunter72 05-26-2021 11:36 PM

Turns out I got a bad ECM, ran through a few tests, then sent it off to a place in texas, they tested it and found the processor was bad. $895 for a new ECM.

bowhunter72 06-26-2021 12:49 AM

Update: Took the MH out for its first run with the new ECM, ran great, hiccup from last year is gone, but i am guessing the stock software is different then what i had, engine has been derated before i could climb a 6% grade at 50 mph, now i can barely pull 40 mph.

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