Recently bought an '08 Buick LaCrosse w/92k miles. It accelerates normally up to about 15% pedal position, then it stops increasing from 15 to about 30%. If you play with the gas, the engine does not respond. Once you get to 30%, it downshifts and powers up. My theory is that the APP (Accelerator Pedal Position) is worn or shorted, and gives a faulty signal in the 15 to 30% range, having to use the default last valid reading. I have read that some sensors can fail within the valid range and not give a fault reading on the OBD. Sound about right?
Related topics
| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| 2010 Buick LaCrosse reduced engine power light | 4 | 10307 | June 21, 2023 | |
| 2006 Buick LaCrosse - Loses power | 2 | 2027 | May 31, 2022 | |
| Car shudders under certain acceleration, goes away when pedal fully depressed | 13 | 6772 | October 9, 2018 | |
| 2004 Buick LaCrosse Dies While Driving | 18 | 15629 | March 26, 2018 | |
| 2008 Buick Lucerne CX :Service Traction control and engine power reduced | 7 | 18822 | August 18, 2015 |