A4 rpm up and down - Audi Forum - Audi Forums for the A4, S4, TT, A3, A6 and more!

Jul 14, 2012 | 08:14 AM

M.phelps5

Thread Starter

Audi Forum - Posts like an A1

Joined: Jul 2012

Posts: 2

From: Lorain, ohio

A4 rpm up and down

Im having problems with my rpm jumping every 5 seconds. Fluid change? It doesnt do it when i get on it. It has 110,000 miles. It has paddle shifters 6 speed /auto. And not sure of transmission type. im not sure if its allwheel drive either. Anyone have this problem? Any outcome? I also had a p0420 codke but i erased it and hasnt been back on.

Jul 16, 2012 | 10:12 AM

Axis

Audi Forum - Posts like an A5

Joined: Jan 2011

Posts: 309

From: Montréal

Re: A4 rpm up and down

Probably a bad vacuum, check your hoses, check valves for a leak.

Jul 16, 2012 | 11:49 AM

FuriouS

Audi Forum - Posts like an A4

Joined: Oct 2009

Posts: 173

From: Ottawa, Ontario

Re: A4 rpm up and down

How much is it dropping? there is an issue with the TC that is causing a 300RMP "Bounce" when at cruising speeds...

Jan 25, 2013 | 07:47 AM

Dinky_B6

Audi Forum - Posts like an A1

Joined: Jan 2012

Posts: 48

From: Sutton/Quebec/Canada

Re: A4 rpm up and down

I had a similar problem on my passat back in the days....is the rpm jumping in idle or even while driving? anyway, mine was only on idle and it happened to be the RPM sensor or engine speed sensor