p0087 silverado duramax

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Vyara
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Post by Vyara » Thu. Jan. 10, 2019 5:51 am

When going up grade pulling fifth wheel camper, check engine light will occassionally luminate. ODB II code is p0087. DIC shows "change fuel filter" or engine power is reduced. Fuel filter changed 5k miles ago. Filter tested and within specs. Only happens when pulling load up grade, but doesn't happen every time. Dealer checked truck and told me all diagnostics normal. But still happens periodically. HELP please.

 
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coaledsweat
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Post by coaledsweat » Thu. Jan. 10, 2019 5:58 am

I'm thinking the pump.

https://www.obd-codes.com/p0087


 
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hotblast1357
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Post by hotblast1357 » Thu. Jan. 10, 2019 6:33 am

Possibly lift pump..

Or.. could be something else restricting power, and falsy tripping fuel code..

Bad air filter..

What year?

 
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BlackBetty06
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Post by BlackBetty06 » Thu. Jan. 10, 2019 5:16 pm

Id be willing to bet that its the fuel pressure relief valve in your common rail. They are known to get weak and allow the rail pressure to blow off. Do you have any tuning on the truck or is it totally stock? Are you running a lift pump?

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