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Intermittent misfires

Tiny
FCGY1972
  • MEMBER
  • 2011 VOLKSWAGEN SCIROCCO
  • TURBO
  • AUTOMATIC
  • 63,000 MILES
Check engine light is on. Car "coughs" during acceleration. Sometimes, Brake Servo Failure warning light comes on too.
Thursday, July 22nd, 2021 AT 7:13 AM

5 Replies

Tiny
MASTER ASE TECH
  • MEMBER
  • 82 POSTS
Hi my name is Dan.

Sounds like the engine may have a skip to it. Have you pulled the DTC (diagnostic trouble codes)? Sometimes a code like P0302 would point you to the cylinder which is having the issue to help you narrow down the problem. Sometimes it could be as easy as a spark plug or a coil.

Can you check the codes and let us know please?

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

I've also attached an article about misfires which will help if this is the issue.

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Please run through this material and let us know what you find. Thanks
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Thursday, July 22nd, 2021 AT 1:45 PM
Tiny
FCGY1972
  • MEMBER
  • 3 POSTS
Hi Dan,

Fault codes and live data attached in image files.
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Friday, July 23rd, 2021 AT 12:23 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi,

I noticed it has been a couple of days since we have made contact. Has any progress been made?

I looked at the codes you have and feel that the MAP sensor may be causing the misfires. Have you checked anything as far as wiring related to it?

Please understand, this vehicle in 2011 wasn't offered in the US, so our manuals don't provide specifics. However, we will try our best to help.

Let us know.

Joe
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Sunday, July 25th, 2021 AT 8:41 PM
Tiny
FCGY1972
  • MEMBER
  • 3 POSTS
Yep. I changed the MAP sensor and everything turns out fine. So far. Thanks.
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Monday, July 26th, 2021 AT 2:49 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi,

Thanks for the update. I'm glad that took care of the problem.

Please feel free to come back anytime in the future if you have questions or need help.

Take care,

Joe
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Monday, July 26th, 2021 AT 6:28 PM

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