I have a 00 2.7t (automatic)

Symptoms:

* When slowing down, it seems like the brakes engine quickly then let off (thought it may be a rough shift but tried in tiptronic and does not happen in mid shift.)

* The rpm's seem a little erratic lately, specially when i slow down to a stop, the rpms well drop to abou 500 rpms momentarily jumping the car forward and then settling back at about 750 rpms within a half a second.

Known problems:

* Secondary Air injection b1 and b2, I can't see this causing the problem because from what I understand all it does is warm up the catalyst converter in cold weather starts

* b1 s1 O2 sensor intermittent low resistance, I could maybe see this causing the problem because it does effect the fuel to air ratio but I have had this fault code for a couple months now.

* A/C pressure switch fault code, my A/C seems to work fine so I'm not horrible worried about that fault code unless you guys can think of some relevance

I do have a Ross-tech Vag-com with the full license, those are the only fault codes that are kicking out, I do run the auto scan every couple days just to see if anything else comes about.

Any ideas? Anything I can try with my Vag-com to help diagnose? And I do plan on replacing the b1s1 o2 sensor asap and probly clean my MAF to see if that helps at all.

 

Sounds like you are having a problem with the transmission either not shifting into neutral quickly enough or the torque converter not unlocking properly. Either way I would recommend that you so a simple transmission oil and filter change. Pretty easy and simple.

Mine had this same problem when I first bought it. I simply did a lot of spirited driving in tiptronic (ALOT) and the valves freed up a bit. That is not the recommended way to fix the problem.

 

Well thats good advice, I will be sure to change my tranny fluid and oil.

But my car actually stalled today when i had to stop quickly, if i drive it cautiously the symptoms are less noticeable. Car runs perfectly at higher speeds but within 1 and 2nd, the rpms seems to stutter (not horrible but just enough to notice) and slowing down to a stop seems to be the worst.

Any more ideas?

 

Pull codes from TCU and post them.

 

no codes other than the ones posted above...and i believe i fixed the secondary air injection bank 1 and 2 as well...resistor was fried and replaced that...so far no cel so thats good...i also just changed my oil and my car seems to be acting a little more normal (knock on wood) so we'll see, i still wanna change my tranny oil and filter tho