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Discussion Starter · #1 ·
What is the cause of cylinder miss fire on my 2004 v6 Touareg SUV? Is it the plugs, MAF, or fuel pump? Any help!
 

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It could be any number of things. Do you have VCDS? If not, you need that (or a pro shop scanner, not one you can buy in the parts stores) to help narrow things down.

If you have an Autoscan, post it!
 

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Discussion Starter · #3 ·
Thanks for the response, but initially i got a new MAF, and changed the AC Copmressor, when im in motion and tend to apply the brakes, i get a strong vibration like jerking immediately i apply the brake it stops. did scan and got cylinder misfire, 123456 not working. my mechanic suggested removing the top cylinder and grind the valve. the other said its fuel pump and MAF. just very confused and these parts dont copme cheap.
 
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