sputters

2005 CHEVROLET TAHOE
171,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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JEREMY HANES
  • MEMBER
  • 3 POSTS
My vehicle quit running a few times then it sputters under acceleration. I cannot get above seventy mph without it sputtering. It is intermittent. One day it was sputtering and the engine light came on. I had it scanned and it was a crank shaft position sensor. The tech affirmed me this was the problem as the sensor was basically misfiring. I replaced it and it continues with the same issues. Some days it will not sputter at all unless I go seventy mph, other days it will sputter at twenty to thirty mph. I am lost. I was told it is not a fuel problem. It always starts right back up after it shuts off.
Aug 24, 2017 at 9:45 AM
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STRAILER
  • ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
It sounds like you are having a misfire problem which shows up under acceleration, have you replaced the spark plugs and wires with AC Delco parts? This is where I would start.

Here is a guide to help you get started:

https://www.2carpros.com/articles/how-to-change-spark-plugs

Please let us know what happens so it will help others.

Cheers, Ken
Aug 25, 2017 at 11:41 AM
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JEREMY HANES
  • MEMBER
  • 3 POSTS
What about coil packs? I will do plugs and wires and see where that gets me.
Aug 25, 2017 at 1:51 PM
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JEREMY HANES
  • MEMBER
  • 3 POSTS
Did plugs and wires and running great. Spent about $135 for plugs and wires. Took about 2 hours for me to do in my driveway.
Sep 5, 2017 at 8:10 AM
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STRAILER
  • ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Good to hear, please use 2CarPros anytime we are here to help.

Cheers, Ken
Sep 5, 2017 at 11:50 AM
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