I had the fuel filter and the primer replaced on my NPR Turbo Diesel. After the replacement, it was idling so high, I couldn't hear while driving. I took it back and now the idle is set so low that I feel like I have lost a lot of power. The vehicle won't go above 60 MPH. Is there a certain idle it is supposed to be set at, or is there something else wrong with my truck?
Have a car question? Get free advice from our top-rated mechanics.
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing