Jerks when accelerating in lower RPM's

2015 MITSUBISHI MIRAGE
108,000 MILES • 3 CYL • 2WD • AUTOMATIC
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CJCJCJ01
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  • 1 POST
Been doing this for about a year now getting worse. Took to mechanic no code showed up. He charged A/C thinking when the A/C kicks on and off it pulls from the small engine causing the jerking. Seemed to work okay for three -four days now back to doing the same.
Jul 12, 2021 at 3:03 PM
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JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
Hi,

Are you only feeling this when the A/C compressor engages and disengages? If it does it with the A/C off as well, has anyone checked fuel pressure to see if there is an issue or for an engine vacuum leak?

Here are a couple of links showing how it is done:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Also, has the vehicle been tuned up (new plugs) or anything electrical been checked?

Let me know.

Joe
Jul 12, 2021 at 9:42 PM
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CJCJCJ01
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  • 1 POST
Will keep you updated thanks.
Jul 13, 2021 at 9:59 AM
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