I took a trip to a town in Ohio, about 1000 miles from my home. Truck road great the whole way their. Pulling down the street to the hotel and suddenly the RPM's started rising and falling like crazy. But no significant change in engine output or driveability. Drove it the whole week their and the 1000 miles back with this strange RPM surging. I drove the truck with this surging for almost 2 years. During that time it would get better and worse intermittently. At its worse, it flat out refused to accelerate normally. It would jerk and shake and my power output was gone. Every person i talked to thought it was a fel pump issue or injector issue. I sunk about $400 into a full inspection, engine analyzation, fuel system cleaning, wires and plugs. It started accelerating again but still surged RPM's idling or driving. Finally i searched for similar problems on the internet and found a handful of people saying to replace the TPS (Throttle position sensor.) $40 at NAPA. I took the air filter housing off and located above the engine block on a metal bracket is the sensor. It has 3 screws and electrical connector. Took 10 minutes and fixed the problem. Wish i would have search the internet about 2 years and $500 ago.
I took a trip to a town in Ohio, about 1000 miles from my home. Truck road great the whole way their. Pulling down the street to the hotel and suddenly the RPM's started rising and falling like crazy. But no significant change in engine output or driveability. Drove it the whole week their and the 1000 miles back with this strange RPM surging. I drove the truck with this surging for almost 2 years. During that time it would get better and worse intermittently. At its worse, it flat out refused to accelerate normally. It would jerk and shake and my power output was gone. Every person i talked to thought it was a fel pump issue or injector issue. I sunk about $400 into a full inspection, engine analyzation, fuel system cleaning, wires and plugs. It started accelerating again but still surged RPM's idling or driving. Finally i searched for similar problems on the internet and found a handful of people saying to replace the TPS (Throttle position sensor.) $40 at NAPA. I took the air filter housing off and located above the engine block on a metal bracket is the sensor. It has 3 screws and electrical connector. Took 10 minutes and fixed the problem. Wish i would have search the internet about 2 years and $500 ago.
- bytez888, Grand Rapids, MI, US