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Old 09-18-2017, 10:10 PM   #7
Cummins6.7trip
 
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Name: Cummins6.7trip
Title: Green Behind the Ears
Status: Not Here
Join Date: Aug 2015
Location: Pa
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Posts: 76
Read this thread and check voltage on the FCA harness, that is where I found my issue after months of parts swapping.

P088 and P0251 - Competition Diesel.Com - Bringing The BEST Together

Also had similar issue with mine a year or so ago with rail pressure to high. I had bad fuel which was causing the fca stick open. After swapping pumps an 3 fca's later I finally realized bad fuel was causing it. But thanks to 06 Diesels thread It helped me find it.
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