2000 Impala

Tiny
NEWSMITH
  • MEMBER
  • 2000 CHEVROLET IMPALA
My Impala has 111,000 miles on it. About three months ago I noticed that when accelerating the car, it seemed to "bang" into gear. I was told the transmission was slipping and to add transmission fluid to it. I was also told that the engine could be dirty so I had the cars engine "moto vaced" (thinking that the fuel injectors were dirty) and topped off the transmission fluid. This only slightly improved the cars performance. Lately the car has started to "bog" when reaching 60 to 65 mph, feeling as though it's "choking" for air. The air filter is clean. I also noticed that the fuel mileage this tank went from 379 miles per tank full to 290 mile per tank full. It doesn't matter what type of weather is outside or if the car is warmed up or not, it does it anytime.

Is this a camshaft sensor issue or another type of censor issue? I'd like to visit that before putting in a new transmission or some other major repair.
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Thursday, March 8th, 2007 AT 8:06 AM

2 Replies

Tiny
MERLIN2021
  • EXPERT
That's a good one! Ok i'm better now! The 2 most important sensors in your car for mileage and "Bogging" are the Mass Airflow Sensor and the Oxygen sensors. It is recommended to change the oxy sensors at 100,000 mi. Even if they aren't lighting the MIL! They do get sluggish! Oh and don't forget the tune up.
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Sunday, March 11th, 2007 AT 9:29 PM
Tiny
NEWSMITH
  • MEMBER
I will try replacing both of these sensors. I appreciate your advice!

Oh, and as for the motor vac, I am pretty convinced that was a complete sham, so no wonder you laughed at that.

Do tell, what is up with the clown pic? That is pretty funny!
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Monday, March 12th, 2007 AT 2:56 PM

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