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Car shaking/choking after EGR disconnection, when pressing accelerator pedal

Tiny
WISH30
  • MEMBER
  • 1999 MERCURY COUGAR
  • 2.0L
  • 4 CYL
  • 2WD
  • MANUAL
  • 250,000 MILES
After I unplug EGR valve the car runs smoother and better, no jerking as before, but when drive in some speed and press the accelerator pedal smoothly to accelerate more. It often shakes (I think this is correct word in English) Like acceleration late.
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Wednesday, October 14th, 2020 AT 1:13 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
Hi,

Can you explain why the EGR was disconnected? Are there any diagnostic trouble codes that have been retrieved? If there hasn't that should be done. Here is a quick video showing how it is done:

https://youtu.be/b2IJGfImVvw

Let me know if there are codes. Also, let me know if the jerking started all at once.

Joe
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Wednesday, October 14th, 2020 AT 7:25 PM

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