I have a tip and have noticed a slight acceleration surge between 2.5-3.5rpm range. This is a new issue and have had a major service,did it before service and still does. Normal driving, no heavy acceleration. Car in 3rd gear sometimes 4th. Under heavy acceleration car runs fine. Clue? Thanks

 

My manual does the same exact thing.

I think it is normal.

 

Variocam...

 

Same happens to me. Heard from need new transmission, to torque converter.... all I know is that it keeps working.

What about Variocam?

 

Talked to service writer, he said it might be computer and told me to drive real hard and let it reprogram itself. I ask if he would pay for any tickets.

 

Is it possible to simply reset computer?

 

I was told the ecu has several programs downloaded in it and will adapt to how you are driving. Hard driving will change the ecu to a more performance oriented program.

 

Correct. I have driven mine hard, and trust me, it does not reset. Yes it goes into a "harder driving" program but as soon as you go cruising again surge is still there.

My mechanic cleaned solenoids but that did not do anything either.

 

Variocam... normal...

 

If normal, why all techs refer to some problem? I'd rather agree with you for the obvious reasons. But car(s) do not do it and all in a sudden, with high miles, they start doing it. What is with the Variocam then, high miles?

 

I have the same issue in my 02 996, 6 speed. with 27K. I guessed it was the variocam and indeed I was told by a veteran P mechanic that I was right.
You typically won't feel it in 1st or 2nd because revs are building quickly, higher gears in a sedate mode is when you will notice it most. It never goes away, although if you hammer it, you don't notice it

 

If right, you guys are making my day. I have been advised to get a new transmission. Right.

 

If it is only a slight surge you feel in this RPM range, or It may feel like it is accelerating for a split second or very slight shift in rpm or even a barely perceivable engine miss, then this is normal. From what I been told??
Mine has never has gotten worse or changed in any way. I live with it, it always there when you're driving easy - no big deal
If your hearing grinding noises, feeling sudden bucking & bouncing, then you better have it checked out

 

Google it