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Handcuffed working on a 6.4

blacksnapon

blacksnapon

Moderator
Staff member
9,461
301
waynesville,mo.
Been on a 6.4 all day. "Do diagnostics, but don't spend any money." Talk about having your hands tied!
 
blacksnapon

blacksnapon

Moderator
Staff member
9,461
301
waynesville,mo.
Had a check engine light. Customer said "Runs great, getting 21 mpg, just got a light on." Has P0088, a P0087, Po193, and p0194. All deal with fuel pressure from the high pressure pump. Started by checking resistance on wires from the PCM to the 15 pin connector on the pass side head. Then checked from the 15 pin connector to the FRP sensor connector. Of course I had to get permission to remove the valve cover first (cash customer, out of warranty). Ended up being the FRP connector. Had to get permission to replace it too!
 

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