Duramax Diesels Forum Truck of the Week
Old 07-17-2017, 06:12 AM
BoiseRob's Avatar
BoiseRob BoiseRob is offline
Join Date: Oct 2007
Posts: 250

Default High Air Temp = FPRV Issues?

Sorry for the duplicate post from the LLY section...

This past Friday we were driving on the interstate with the cruise set at 70mph towing our TT when I heard a muffled "pop" and the check engine light came on. Engine wouldn't go above 2000 rpm. Got to our campspot and went into town and the local NAPA pulled a P0087 code. Stock LBZ running an IdahoRob tow tune.
Air temp was 106 degrees. My friend's 6.0 Ford engine light came on 15 minutes before mine. We did not fuel up at the same station but we did leave our trucks idling for 20+ minutes while we shopped for groceries (wives & dogs in the trucks).
This was the first time the P0087 code has happened. Truck is a 2007 LT1 Classic with 72k miles and has run the same IdahoRob tune since it was 6 months old in April of 2007.

Does high ambient air temp have an affect on the fuel or fprv valve?
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Old 07-17-2017, 07:25 AM
Chevy1925's Avatar
Chevy1925 Chevy1925 is offline
don't know sh!t about IFS

Join Date: Oct 2009
Location: Phoenix Az
Posts: 13,865


nope. time to do a bottle test.

02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
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