[A4] Bucking and EPC light

[David Weprin]

No, I have not yet done that. However, the first time I took it in to the 
dealership, they told me that the car had a code that indicated a throttle 
body physical malfunction, so they replaced the whole unit. That made no 
difference, actually.

On 7/25/05, Brandon Rogers <brogers at terrix.com> wrote:
> 
> Have you pulled the codes? If not this will likely be very valuable. You
> can probabley get an independent to pull them up for about $40 or
> 
> Check out www.shadetreesoftware.com <http://www.shadetreesoftware.com>.
> 
> Brandon
> 
> ----- Original Message -----
> From: "David Weprin" <david.weprin at gmail.com>
> To: <A4 at audifans.com>
> Sent: Monday, July 25, 2005 12:26 PM
> Subject: [A4] Bucking and EPC light
> 
> 
> I have a 2001 A4 2.8Q-Tip. For the past 6 months or so, my car has been
> having some strange issues. During acceleration, engine output will be
> uneven. Like say I put the tiptronic in 2nd gear and start accelerating at 
> a
> decent rate from 1200rpm until 5500rpm. The car will jerk or buck randomly
> as the RPM increases. Sometimes, during normal, very light acceleration, 
> the
> car will suddenly jerk forward as if I just gave it full throttle for a
> second! Needless to say, I've almost rear-ended a couple people!!
> 
> When accelerating onto the highway or away from a toll plaza, if I open 
> the
> throttle too much, the car will buck violently and then suddenly go into
> "fault mode" (very limited acceleration & high rev shift points) and the 
> EPC
> light will come on. At that point, I have to pull over and restart the car
> for the condition to go away.
> 
> The car has already been in the shop three times. The last time was about 
> 2
> months ago. The last time, they replaced the MAF (Mass Airflow) sensor and
> that resolved the issue for a while. Yet, with the recent heat (103º+) the
> issue has come back, and it's worse than ever! I've scheduled an 
> appointment
> for Monday of next week. I just hope I can make it that long without 
> hitting
> someone or stalling on the highway again. It's very disconcerting to be
> traveling 40mph, trying to get over to the shoulder, while everyone else
> zips by at 70mph honking inconsiderately!
> 
> Has anyone else experienced this issue too?
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