hi i have a 99 A4 2.8 auto i was driving home last night it started vibrating near the feet area every 5 seconds my rpm gage would slightly jump when this happens it also sound like a rumble anybody have any clues to cause this

 

did it throw a check engine light of some sort? have you ever had the oil changed in your transmission?

 

Misfire? Any loss of power?

 

i just bought the car so dont no if oil was changed but i just found out its misfiring oil leaking through O ring in 2 plugs hope this solves my problem

 

yeah, that might have been the problem...

 

hey vijay take a look at this post
https://www.audiforum.ca/audi-a4/156...nsumption.html