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Car runs bad

Tiny
BEVERLY MAYNARD
  • MEMBER
  • 2005 CHEVROLET IMPALA
  • 3.4L
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 121,000 MILES
I did what you said I check all fuse vacuum lines I got it down to the MAF sensor I unplug it and it ran like was before this started. Will it hurt my engine if I keep it unplugged? Thank you so much for your help.
Wednesday, August 23rd, 2017 AT 2:44 PM

7 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,702 POSTS
Yes is not good to run it will it disconnected, did you try replacing the MAF sensor?

Here is a guide to help:

https://www.2carpros.com/articles/how-to-replace-a-mass-air-flow-sensor-maf

Please let us know what you find.

Cheers, Ken
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Thursday, August 24th, 2017 AT 11:26 AM
Tiny
BEVERLY MAYNARD
  • MEMBER
  • 31 POSTS
I put a new one on last month it seemed to run worst than it did, but it starts on a third try now. The sensor to the left of it shows to not have power but when I unplug it I get a click in back of the motor, the same as putting it back on. I know it is something simple I just cannot find it. Thank you, BENJAMIN
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Thursday, August 24th, 2017 AT 1:53 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,702 POSTS
It sounds like you have a bad ground wire, can you go over the wiring harnesses to check that the grounds are clean and tight?

Please let us know what you find.

Cheers, Ken
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Friday, August 25th, 2017 AT 12:19 PM
Tiny
BEVERLY MAYNARD
  • MEMBER
  • 31 POSTS
The only ground wire I know of is on the starter and I cleaned it any others I don't know about there are so many to count can you tell me of any others? Thank you benjamin
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Friday, August 25th, 2017 AT 5:55 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,702 POSTS
Can you check the main battery cables for corrosion or bulging?
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Friday, August 25th, 2017 AT 7:12 PM
Tiny
BEVERLY MAYNARD
  • MEMBER
  • 31 POSTS
The battery is new I cleaned the post can you tell me if there is another ground of some kind I'm missing? Thank you BENJAMIN
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Saturday, August 26th, 2017 AT 12:24 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,702 POSTS
Ya it sounds like it.
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Monday, August 28th, 2017 AT 4:22 PM

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