Dector22

The other day while I was accelerating, I got a sort of hesitation, almost as if there were retardation of the timing or an exhaust leak.

Situation:

I had my valve cover gaskets replaced two weeks ago and also my transmission serviced.

2000 A4 B5 V6 2.8


I do have re-occurring engine light VAG-COM codes for:


16805 P0421 Warm Up Catalyst; Bank 1: Efficiency Below Threshold / Intermittent

16815 P0431 Warm Up Catalyst: Bank 2: Efficienty Below Threshold / Intermittent

17819 P1411 Secondary Air Injection System; Bank 2: Insufficient Flow / Intermittent

17831 P1423 Secondary Air Injection System; Bank 1: Insufficient Flow / Intermittent

18010 P1602 Power Supply Terminal 30: Voltage too Low / Intermittent

Tonight as I was looking over the engine, I started pushing down on the spark plug connections and #2 snapped into place. Could this have been the problem of the acceleration. I will check tomorrow but with the codes that have been re-occurring should I be concerned with the oxygen sensors and catalytic converters?

5v/cyl

I'd start with the last code regarding power supply. Could be the root of all the other codes. Corrosion, chaffed wire, or loose connection.

Harddrive2000

Did you disconnected the battery recently?

Dector22

I disconnected it back in December. Another unexplained thing that happened when I did this was my mileage went from 132,000 miles to 41,000 miles

Dector22

Well, my transmission died today. I was passing someone and heard a "thunk" and a few other noises like rattling. I had it towed to my mechanic and they have diagnosed that the transmission needs to be replaced. They called the local Audi dealership and were quoted roughly $4,500 for a rebuilt transmission. The mechanic will charge roughly $1,000 for labor.

Does anyone have any suggestions as to the direction I should take? Such as any other better deals for a rebuilt transmission or have my own transmission rebuilt or...?

Any ideas welcome.

Please help in Fallbrook, CA.

2000 Audi A4 Avant Quattro 2.8L V6 with 141,000 miles

Cruffler

Pull it yourself & save the $$$$. Shops will charge out the wazoo for the remove & install hours. Another idea is to take it apart your self with the proper manual diagnose & repair yourself. I did this to my F350 E4oD tranny when I was getting the shaft on rebuild pricing. I was being quoted $2,800...I did it for a whopping $375 on a weekend or so.