DIY O2 sensor replacement Bank 1
09-11-2007, 09:55 AM
#11
Personally, that seems to contradict alot of anectdotal evidence that Bosch universal O2s
don't work properly.
I've seen it personally a dozen times. Made no sense, as you would assume that they should work.
Glad you've had success with it, though.
I've seen it personally a dozen times. Made no sense, as you would assume that they should work.
Glad you've had success with it, though.
09-11-2007, 10:45 AM
#12
AudiWorld Senior Member
Join Date: Jun 2006
Posts: 761
Likes: 0
Received 0 Likes
on
0 Posts
If you use universals, don't solder them or use the splices provided. They will corrode, even with
heat shrink. I used environmental crimp splices, that are intended for outdoor exposure that use a water tight shrink sleeve. I work in electronics, and have seen alot of failures that are contributed to incorrect splices in wiring, and can tell you from first hand experience that a good splice will make all the difference. Don't let someone tell you any garbage about the resistence of a splice causing issues with an O2 sensor, its all in the way its done.
09-11-2007, 07:09 PM
#15
AudiWorld Senior Member
Join Date: Jun 2006
Posts: 761
Likes: 0
Received 0 Likes
on
0 Posts
Instructions here
1. Remove the y-pipe and accordian hose.
2. Unscrew the coolant tank, unplug sensor on bottom, and swing out of the way.
3. Unplug driver side sensor at firewall, and use a 2 ft socket extension with a universal swivel, breaker bar and O2 wrench to break loose sensor. You will need to carefully reach from above between the firewall and engine to guide the wrench onto the sensor. It may be difficult to break loose, but you can use liquid wrench if its bad.
4. Once old sensor is out, you can splice(universal) and install new sensor by screwing in by hand and tightening with wrench setup. Don't forget to put loctite on the sensor threads. Don't forget wire protective sleeve if you splice a universal in.
5. Repeat steps 3 & 4 for passenger side.
Note: If you use a crimp slice, make sure it is an environmental type that is water tight. They should come with a shrink sleeve that shrinks with heat and seals the metal splice from moisture,corrosion etc.
Enjoy a better morning idle and better gas milage.
2. Unscrew the coolant tank, unplug sensor on bottom, and swing out of the way.
3. Unplug driver side sensor at firewall, and use a 2 ft socket extension with a universal swivel, breaker bar and O2 wrench to break loose sensor. You will need to carefully reach from above between the firewall and engine to guide the wrench onto the sensor. It may be difficult to break loose, but you can use liquid wrench if its bad.
4. Once old sensor is out, you can splice(universal) and install new sensor by screwing in by hand and tightening with wrench setup. Don't forget to put loctite on the sensor threads. Don't forget wire protective sleeve if you splice a universal in.
5. Repeat steps 3 & 4 for passenger side.
Note: If you use a crimp slice, make sure it is an environmental type that is water tight. They should come with a shrink sleeve that shrinks with heat and seals the metal splice from moisture,corrosion etc.
Enjoy a better morning idle and better gas milage.
09-11-2007, 09:11 PM
#16
The Zoldmans are very good. I got mine just as the prices were on there way to the moon!
Finally put them in a few weeks back. Fortunately, a lift made things much easier!
Then of course, both of my EGTs went bad. Owning an S4 really is like having kids! It's always something and it's never cheap!
Then of course, both of my EGTs went bad. Owning an S4 really is like having kids! It's always something and it's never cheap!
Thread
Thread Starter
Forum
Replies
Last Post
M22
S4 / RS4 (B5 Platform) Discussion
1
01-24-2010 04:13 PM
inwoo
A4 (B6 Platform) Discussion
5
03-22-2007 09:32 AM
