Engine power reduced, stabilitrak light comes one

Asked by GuruS78ZJ Jun 21, 2019 at 01:39 PM about the 2011 Chevrolet Impala LT FWD

Question type: Maintenance & Repair

My 2011 Chevy impala lt keeps having an
issue of engine power reduced, stabilitrak
comes on and it jerks as if the engine wants
to turn off. If had the gas pedal replaced and
throttle body and mass air flow sensor.
Yesterday I bought a new air intake hose
also. Worked fine until today 20 minutes ago
car was driving fine and out of nowhere this
pops up and my engine power is reduced to
under 20. Code p0171 popped up said could
be the mass air flow sensor but that’s brand
new. I don’t know what else it could be that it
is doing this. Randomly happens on the
highway or back roads. Help! I’m running out
of ideas on to what it is. I depend on my car
a lot for my regular daily job and my side job.
It’s the only car I have

3 Answers
20

DiagnosticianRus answered 4 years ago

P0171 means you’re engine is running lean. Could possibly be a vacuum leak. If you can read live data posts your 02 values and your fuel trim values. You can disconnect your MAF and see if that changes anything. It could be over or under reporting. New parts don’t mean they’re good. I would really look for a vacuum leak. Inspect all vacuum hoses for any holes and listen for hissing sounds. Possibly even a disconnected hose. If you do hear a hissing sound you can wave your hand over the vacuum hoses and you will hear a change in the way it sounds if your hand goes near it. Also, a water bottle with a small hole to spray it onto hoses is a good low-tech tested method. If you spray water directly where the leak is it should cause the engine to stumble.

2 people found this helpful.
Mark helpful

Megan answered about a year ago

I'm having this same type of issue with my 2011 impala. Service stabilitrak, engine power low. Was supposedly fixed but after having my car back from mechanic a few months it started happening again. And now to a worse degree than before. If Anyone has any answers/information please help! Having my car running is my only way to have income atm.

Mark helpful

Your Answer:

Related Questions

  • Engine power reduced, stabilitrak light comes one 3 Answers

    My 2011 Chevy impala lt keeps having an issue of engine power reduced, stabilitrak comes on and it jerks as if the engine wants to turn off. If had the gas pedal replaced and throttle body and mas...

    2011 Chevrolet Impala LT FWD

    -

    Maintenance & Repair

  • Reduced engine power 2 Answers

    My 2012 Impala has been giving me the same trouble for the past 2 years. The car will at random start to kind of chug. It will sound like it's losing power. Then it will go into reduced power mode ...

    2012 Chevrolet Impala

    -

    Maintenance & Repair

  • Engine reduced power 5 Answers

    My 09 Chevrolet Impala has an engine reduced power showing up on the odometer computer what would cause this

    2009 Chevrolet Impala Police Unmarked FWD

    -

    Maintenance & Repair

  • light on dash comes on and says engine power reduced and the car has reduced power why 1 Answer

    2006 Chevrolet Impala LS FWD

    -

    Maintenance & Repair

  • Stabilitrak, Brake assist, Traction Control, ABS light comes on 1 Answer

    I have a 2010 Impala that 2 weeks ago the right front wheel slipped and the Stabilitrak, Brake assist, Traction Control ABS light came on, today on 8/18 the left wheel did the same thing. Can any...

    2010 Chevrolet Impala LT FWD

    -

    Maintenance & Repair

Impala

Looking for a Used Impala in your area?

CarGurus has 132 nationwide Impala listings starting at $4,888.

Postal Code:

Shortcuts

Search Chevrolet Impala Questions

CarGurus Experts

  • #1
    Rowefast
    Reputation
    6,120
  • #2
    james sparrow
    Reputation
    4,630
  • #3
    dandyoun
    Reputation
    4,080
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Malibu
54 Great Deals out of 1,065 listings starting at $2,495
Used Dodge Charger
26 Great Deals out of 879 listings starting at $5,495
Used Honda Accord
50 Great Deals out of 974 listings starting at $2,995
Used Toyota Camry
48 Great Deals out of 1,142 listings starting at $4,795
Used Chevrolet Camaro
15 Great Deals out of 468 listings starting at $11,749
Used Chevrolet Silverado 1500
212 Great Deals out of 8,092 listings starting at $6,995
Used Chrysler 300
27 Great Deals out of 533 listings starting at $6,898
Used Chevrolet Tahoe
12 Great Deals out of 847 listings starting at $9,980
Used Dodge Challenger
34 Great Deals out of 746 listings starting at $12,979
Used Buick LaCrosse
4 Great Deals out of 28 listings starting at $7,495
Used Nissan Maxima
10 Great Deals out of 186 listings starting at $1,450
Used Jeep Grand Cherokee
124 Great Deals out of 3,505 listings starting at $4,950
Used Nissan Altima
27 Great Deals out of 673 listings starting at $3,153

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.