Gjaime

Hey greyhound. Long time!

First scan vag-com and post the dtc codes. I wouldn't personally start throwing parts at the car just yet.

There are 2 oxygen sensors. Pre-cat/test pipe then after cat. I have a code now for my pre-cat B1 S1. The important one. I first want to throw in the new MAF in first. Since I have a bad MAF, reads .15 g/s at idle. Then clear code and see if it still throws code for oxygen sensor.




-Jaime

1999Audi

I replaced mine with "BOSCH universal oxygen sensor - spliced" = 8 months passed No problem = I see better gas millage.

Greyhound Guy

Yeah, how are ya? Thanks for the detailed info. I will do.

Greyhound Guy

Here it is:

Thursday,03,September,2009,23:20:04:25159
VCDS Version: Release 908.0

Address 01: Engine Labels: 4B0-906-018.lbl
Control Module Part Number: 4B0 906 018 CH
Component and/or Version: 1.8L R4/5VT G 0002
Software Coding: 16701
Work Shop Code: WSC 00000
4 Faults Found:

17526 - Oxygen (Lambda) Sensor Heating; B1 S2: Open Circuit
P1118 - 35-00 - -
17522 - Oxygen (Lambda) Sensor; B1 S2: Internal Resistance too High
P1114 - 35-00 - -
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 35-10 - - - Intermittent
16686 - Cylinder 2: Misfire Detected
P0302 - 35-10 - - - Intermittent

Readiness: 0010 1001

Greyhound Guy

Some Readings:

Address 01: Engine (4B0 906 018 CH)

23:27:02 Group 002: Basic functions
800 /min Idling speed 740-920 rpm
20.3 % Engine load 13-45 %
2.04 ms Inject. aver. time 2.0-4.0 ms
3.31 g/s Air mass drawn in 2.0-4.5 g/s

Greyhound Guy

The O2 error codes come right back.

Gjaime

Sounds like coil pack I wouldn't worry about the b1 s2 code. That's because of your cat/test pipe.

Move your coil pack from cylinder 2 to 3, reset and if it shows up on 3. Then you found the problem.

I would also check the coilpack 2, if it's clamped down correctly and not loose.

Of course before you move coil packs, take a peak at the spark plug on cylinder 2. See the condition and if it's tightened all the way, could be lose. Or bad plug.


-Jaime

Greyhound Guy

It's not the typical coilpack problem I've had in the past. Will have to look into it more.

I've got the non fouler on the rear sensor so it adds another complexity to the problem.

BikerBill

I used the Bosch universal sensors in the upstream location. I replaced them over three years ago and have had no problems since. Access to the sensors is tight--make sure you have a variety of socket extensions including a U-joint. Small hands help too!