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Q&A

POO87 SAGA

I just returned to Illinois from Quartzsite towing my 12,000-pound fiver. I have 123k miles on my ’09 LMM Duramax at this point. I had no problems going south in January, but the truck experienced several P0087 episodes on my return to Illinois last week—usually on the bigger hills and a couple of hours into the day and with a lower fuel level in the tank (the usual cast of characters, evidently).

This is an absolutely stock truck that is regularly serviced by our local Chevy dealer. I have faithfully used Power Service fuel treatment in every tank since day one. I’ve also equipped the truck with auxiliary fuel filtration almost from day one. Both the auxiliary and stock fuel filters have been regularly serviced at their recommended intervals.

I’ve spent a lot of time online doing research on the trouble code P0087, looking for any possible short- or long-term solutions. Getting home the last 1,000 miles was a big problem. I tried to keep post-turbo EGTs in the 1,000 degree range and never let it exceed 1,100. I used that as a proxy for the temps the injectors and incoming fuel might be experiencing. I operated the transmission in manual mode, which allowed me to select transmission gearing on hills; in turn, this allowed for better management of exhaust temperature.

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About Diesel World

Diesel World May 2019, Find Your Next Truck : The Best Diesel Trucks to Build, The Good The Bad & The Ugly, Diesel History 1919-2019 : 100 Years of Cummins, And More.....