Mass Air Flow Cleaned, now transmission won't shift?

215

Asked by Apr 27, 2017 at 08:20 AM about the 2000 Chevrolet Impala LS FWD

Question type: Maintenance & Repair

So my MAF was very dirty when removed. I used appropriate cleaner and let
it dry for about an hour. I reinstalled the MAF and took it for a drive. My
check engine light came on, and it will not shift out of first gear. I read
somewhere that is the MAF was cleaned you must reset the vehicle's
computers so last night I unhooked my battery and let it sit overnight. I don't
know if it will work correctly or not, but is there a specific set of instructions I
have to follow to reset the parameters of the vehicle's computers? I heard
that I need to perform the GM Driving Cycle. Any thoughts? Anything is
much appreciated. I also read somewhere that the MAF calculates engine
load so the transmission knows when to shift because of line pressure.

10 Answers

215

** I understand how delicate the Mass Air Flow sensor is so I made extra sure not the let anything even get so close as to touching it or the hot wires. I even had the spray can back quite a ways so it wouldn't be too much pressure on the hot wires.**

1 people found this helpful.
67,965

Is the check engine light lit? If so have the trouble code read.

1 people found this helpful.
121,355

Yes there is a drive time protocol for your vehicle, it can take as long as 20 minutes for it too relearn the vehicle, however there is a basic programming installed from the factory, so even during the drive time everything like the transmission should work as it would right from the factory, so if it doesn't shift then something else is wrong, double check your work, possible a cable got misrouted or sensor ground wire could have broke, sometimes it just a little thing that can really mess us up. If all else fails find a shop close by that can do a live data scan, that might be the only way to find what happened.

1 people found this helpful.
Best Answer Mark helpful
215

The check engine light is on, but I'm not sure what it is yet. I'm going to try and see later what it is. I believe it is still receiving power, but you might be correct with the wire being not routed correctly or a ground wire breaking. Thanks!

215

I am almost positive though that the code is going to be a P0101.

121,355

If you still get the MAF code thats for sensor range, then it's time for a new MAF.

1 people found this helpful.
121,355

Thanks for the best answer points.

1 people found this helpful.
215

No problem! Thanks for your help!

215

***SOLVED*** I figured it out! I accidentally put the throttle position sensor in wrong and it now runs and drives better than ever before! Thanks for your help!

121,355

WOW I didn't think you could put those on wrong, I've never had a problem with that but I always mark everything first, just been a tech too long. Glad you found it and hope you are code free.

Your Answer:

Impala

Looking for a Used Impala in your area?

CarGurus has 25,594 nationwide Impala listings starting at $790.

ZIP:

Chevrolet Impala Experts

  • #1
    Js08016
    Reputation
    2,430
  • #2
    Rowefast
    Reputation
    2,060
  • #3
    Danny Wang
    Reputation
    1,830
View All

Related Models For Sale

Used Chevrolet Malibu
620 Great Deals out of 53,590 listings starting at $1,300
Used Honda Accord
719 Great Deals out of 96,716 listings starting at $1,225
Used Chevrolet Camaro
316 Great Deals out of 27,098 listings starting at $2,700
Used Toyota Camry
1,012 Great Deals out of 70,645 listings starting at $1,137
Used Nissan Maxima
293 Great Deals out of 17,088 listings starting at $1,295
Used Nissan Altima
912 Great Deals out of 54,141 listings starting at $1,300
Used Chevrolet Tahoe
632 Great Deals out of 38,029 listings starting at $1,950
Used Ford Mustang
378 Great Deals out of 39,450 listings starting at $1,995
Used Chevrolet Silverado 1500
1,805 Great Deals out of 155,394 listings starting at $1,995

Used Cars For Sale

2018 Chevrolet Impala LS FWD For Sale
752 listings starting at $19,822
2017 Chevrolet Impala LS FWD For Sale
5 Great Deals out of 288 listings starting at $14,990
2016 Chevrolet Impala LS FWD For Sale
57 listings starting at $11,999
2015 Chevrolet Impala LS FWD For Sale
184 listings starting at $10,500
2014 Chevrolet Impala LS FWD For Sale
5 Great Deals out of 183 listings starting at $8,900

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.