It shakes at stop sign then once I get past 45 MPH it runs good again

Tiny
STEVE MJF
  • MEMBER
  • 2008 AUDI A4
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
Just bought car and ran good, put gas in it when it was time used 93 Shell gas now it runs really bad.
Sunday, January 31st, 2021 AT 5:57 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Hi,

When you refilled the tank, did you overfill it by chance? Is the check engine light staying on when the engine is running?

If the light stays on, you should have the computer scanned for diagnostic trouble codes. Here is a video showing how it's done:

https://youtu.be/InIlnsjOVFA

I realize most people don't own a scan tool. However, often times a parts store will do it free of charge. If the light is on, have this done and let me know what codes are found.

Let me know what you find or if you have other questions.

Take care and God bless.

Joe
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Monday, February 1st, 2021 AT 4:54 PM

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