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Isuzu NPR: , I'm Bill, I have a 2006 Isuzu NPR Diesel. Was…

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Hi, I'm Bill, I have...
Hi, I'm Bill, I have a 2006 Isuzu NPR Diesel. Was driving on highway on cruise control about 68mph. it's sweetspot on road. going up a hill the engine dropped rpm. didn't die but would not rev over 2100 rpm. Limped it home just a few miles. Shut engine off and restart it. Engine revs up fine. Get on road about 35mph and power drops again. Changed pressure sensor on fuel rail, no change. These parts are very expensive, I can't play Russian roulette with all the sensors. Any ideas?
Submitted: 3 years ago.Category: Medium and Heavy Trucks
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Answered in 8 hours by:
6/18/2015
Technician: Jeremy, Certified Truck/Bus Technician replied 3 years ago
Jeremy
Jeremy, Certified Truck/Bus Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 3,875
Experience: ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician
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Do you have a check engine light that came on during this? If so, can you pull the codes that came up? I don;t want you playing "Russian Roulette" eitehr, but the codes will help narrow it down or you will have a lot of guess work which can cost money...
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