Running rough

1998 CHEVROLET VENTURE
156,000 MILES • 4.3L • V6 • 2WD • AUTOMATIC
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JBRYANT0608
  • MEMBER
  • 4 POSTS
I have a running rough idle. It has a slight rough idle while in park but when i put it in gear with my foot on the brake it literally jumps back and forth and will shake you like crazy and the back light on the dash dims and brightens the whole time. Runs great while accelerating only does this with foot on brake. Have replaced IAC cleaned and replaced MAF new belt.. any suggestions will help.. first video is in park second is with foot on brake in gear.
Apr 29, 2019 at 8:25 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good morning,

Videos did not appear.

Can you reload them?

Is the check engine light on?

https://www.2carpros.com/articles/engine-surges

Roy
Apr 29, 2019 at 8:32 PM
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JBRYANT0608
  • MEMBER
  • 4 POSTS
Sorry not sure why they didn't upload. No no lights have ever come on..
Videos (Click to enlarge)
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Apr 29, 2019 at 8:55 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Very hard to hear. Did not hear anything abnormal at all.

Roy
Apr 29, 2019 at 9:24 PM
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