Join Date: Aug 2004
Location: Blackfoot, ID
Feedback Score: 0 reviews
Re: Cat 3126 problems
3126 engines don't have a shutoff solenoid, it is all controled by the ECM. Most likely the speed sensors not sending signal, HEUI IAP valve, or even the HEUI pump itself. Longshot might be ECM. Unless you have an active code, the cruise flash codes won't show anything. If you can get your engine S/N I could probably help narrow down the steps. It will most likely start with 1WM, 7AS, CKM, HEP, 9YN. Just to name a few.
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