car runs bad

2005 CHEVROLET IMPALA
121,000 MILES • 3.4L • 6 CYL • AWD • AUTOMATIC
Avatar
BEVERLY MAYNARD
  • MEMBER
  • 31 POSTS
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.
Aug 23, 2017 at 2:44 PM
Advertisement
Avatar
STRAILER
  • CERTIFIED EXPERT
  • 53,854 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
Aug 24, 2017 at 11:26 AM
Avatar
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
Aug 24, 2017 at 1:53 PM
Advertisement
Avatar
STRAILER
  • CERTIFIED EXPERT
  • 53,854 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
Aug 25, 2017 at 12:19 PM
Avatar
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
Aug 25, 2017 at 5:55 PM
Avatar
STRAILER
  • CERTIFIED EXPERT
  • 53,854 POSTS
Can you check the main battery cables for corrosion or bulging?
Aug 25, 2017 at 7:12 PM
Avatar
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
Aug 26, 2017 at 12:24 PM
Avatar
STRAILER
  • CERTIFIED EXPERT
  • 53,854 POSTS
Ya it sounds like it.
Aug 28, 2017 at 4:22 PM