bogging and sputtering

2001 BUICK CENTURY
88,000 MILES • 6 CYL • FWD • AUTOMATIC
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CTG206
  • MEMBER
  • 1 POST
my car seems to be bogging down when i press the accelerator. i have changed all the spark plugs thinking that would fix it, but the problem still persists. what can i do to fix this?
Feb 13, 2011 at 6:38 AM
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KASEKENNY
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 18,907 POSTS
There are a number of things that will cause this, so we need to start by checking the fuel pressure and find out if it is low. Here is a guide that will help with this:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

If the fuel pressure is okay, then we need to monitor the o2 sensor data and find out if this is lean.

https://www.2carpros.com/articles/repair-lean-mixture-codes-p0171-or-p0174-on-some-manufacturers

If it is not lean, then the next most probable issue is the torque converter has failed.

Basically, what happens is the converter stops pushing the fluid through the converter causing the input shaft to spin and it bogs the engine down.

Let's start with this info and we can go from there.

Thanks
Apr 1, 2022 at 4:43 PM
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