The rpm dip low constantly and the car acts as if it wants to stall. Rough uphill and definitely difficult to get it to highway speeds.
What I've done
- changed out both catalytic converters and the downstream 02 sensor. The upstream 02 sensor they ordered was wrong so it's disconnected but the problem was before this.
- Checked for air leaks at the intake and manifold. Manifold has a small crack but I don't think that would cause this?
Any ideas would help out significantly. Thank you guys for your time you are awesome!
What I've done
- changed out both catalytic converters and the downstream 02 sensor. The upstream 02 sensor they ordered was wrong so it's disconnected but the problem was before this.
- Checked for air leaks at the intake and manifold. Manifold has a small crack but I don't think that would cause this?
Any ideas would help out significantly. Thank you guys for your time you are awesome!
Feb 27, 2026 at 1:05 PM
