ImpalaWhile undergoing many facelifts in its history, the Impala has proved itself to both civilians and police forces as one of the most capable 4-door cars GM has ever offered. Currently moving towards its 10th generation the Impala is one of the longest lasting and popular models.
Includes: Bel-air Platform: B-body & W-body
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Hi all! Tried searching but didn't find any good answers (probably input the keywords wrong...sorry!).
2001 Impala 3.4L w/145k miles.
Started hesitating and 'laboring' on acceleration, especially when starting from a stop - 30mph. Then again about 50-60 mph.
Motor runs fine through low-high RPMs when in park.
Trans appears to shift just fine, like it always did. Haven't yet checked engine code at O'Reilly but will do so this week.
Thought it might be plugs/wires as they had never been done as far as I know. Plugs wires now replaced, problem still exists.
Search did point to a few candidates (air sensor, etc.) and hopefully there's a code to help me. Check Engine light does not come on. Hoping it's a DIY or low cost fix of course. Any other possible easy suggestions requested.
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If that fixes it, I'll take back the Cat I just bought for a refund at O'Rielly. If that doesn't fix it I'll report back with an update.....
Ok, we've already replaced the EGR on my car. Didn't help and now the Engine light is back on. I talked to a mechanic yesterday and was told it could be the Catalyst Converter. Plan to bite the bullet and pay for the diagnostic.