Another misfire question.

Old 11-03-2016, 03:37 PM
Audiworld Junior Member
Thread Starter
Join Date: Jun 2011
Posts: 24
Likes: 0
Received 0 Likes on 0 Posts
Default Another misfire question.

I have a 2007 q7 that has had a misfire problem for a while now. It runs and idles great but when the rpm gets up around 4500 the the check engine light starts to flash.
When I check the codes it says there is a missfire on cylinders 1, 4 ,2 ,8, 6, and 7. The funny thing is those cylinders missfire when I'm accelerating, but if im decelerating and down shift to slow down then cylinders 3 and 5 start to misfire. I took it to the dealer a while back they replaced the fuel pump, the fuel filter, the spark plugs and coils and an intake runner actuator to no avail. I asked them about cleaning the carbon off the intake valves but all they offer is a some sort of cleaner they spray in the intake while the engine is running so I ordered the parts and did it myself. Still have the same missfire. If anyone has any ideas that would be very helpful thanks.
drexer13 is offline  
Old 01-11-2018, 01:23 PM
Audiworld Junior Member
Join Date: Jan 2018
Posts: 54
Likes: 0
Received 0 Likes on 0 Posts

Ever figure out your problem?
Craig Cringston is offline  
Related Topics
Thread Starter
Last Post
Q7 Discussion
01-07-2018 06:20 AM
A6 / S6 (C6 Platform) Discussion
03-21-2012 05:50 PM
Audi 100 / A6 (C4 Platform)
12-13-2007 11:05 PM
Audi A3 / S3 / RS 3
04-11-2007 05:16 PM
A4 (B6 Platform) Discussion
10-17-2004 05:02 PM

Thread Tools
Search this Thread
Quick Reply: Another misfire question.

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: