A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

need to replace front o2 sensor

Thread Tools
 
Search this Thread
 
Old 01-18-2005, 01:55 PM
  #1  
New Member
Thread Starter
 
unknownvirus's Avatar
 
Join Date: Aug 2003
Posts: 193
Likes: 0
Received 0 Likes on 0 Posts
Default need to replace front o2 sensor

i know the bosch one on ECS is only 22.95
but is it worth it to get non audi...plus its also 80$ (big plus)..any bad experiences with it?

also...my mechanic says ill have to pay for the full hour to install it..which is 70$...or is easy enuf to do my self?

any other info i need to know would be helpful too..i did search..but i just need specific answers...also..whats the easiest way to find out my engine code..i think i have an AWM?

its a 97 a4 1.8t quattro

thanx guys
Old 01-18-2005, 01:58 PM
  #2  
AudiWorld Super User
 
CK:1.8T+Rabbitâ„¢'s Avatar
 
Join Date: Oct 2003
Posts: 15,286
Likes: 0
Received 0 Likes on 0 Posts
Default

DIY, DIY!!!
Old 01-18-2005, 02:00 PM
  #3  
New Member
Thread Starter
 
unknownvirus's Avatar
 
Join Date: Aug 2003
Posts: 193
Likes: 0
Received 0 Likes on 0 Posts
Default Re: DIY, DIY!!!

is there a write up?

with pics?
Old 01-18-2005, 02:18 PM
  #4  
AudiWorld Super User
 
Ritz's Avatar
 
Join Date: Oct 2003
Location: Northern VA / DC Area
Posts: 5,299
Likes: 0
Received 3 Likes on 3 Posts
Default You can do this yourself.

The front O2 sensor is easily accessible from the engine compartment. If you don't have an O2 sensor socket, you can just snip the wire and use a regular deep socket. Soak the threads with WD-40/PB Blaster for a few minutes before trying to loosen the sensor. Also, put antiseize compound on the threads (don't get any on the sensor element) before you put the new one in. The wires on the sensor go to a snap on connector (just follow the wire). Take your time when you pop the connector so you don't break the little plastic tabs. In a perfect world, this is a 5 minute repair.

Cheers,
Old 01-18-2005, 02:22 PM
  #5  
New Member
Thread Starter
 
unknownvirus's Avatar
 
Join Date: Aug 2003
Posts: 193
Likes: 0
Received 0 Likes on 0 Posts
Default Re: You can do this yourself.

thats pretty cool

anyone have any reviews about the bosch sensor?
Old 01-18-2005, 02:22 PM
  #6  
AudiWorld Super User
 
JHam_CT's Avatar
 
Join Date: Feb 2004
Posts: 2,202
Likes: 0
Received 0 Likes on 0 Posts
Default Easy - just depends on the condition of your Bung.

Spray it with liquid wrench, let it sit overnight... get a 22mm O2 Sensor socket (allows room for the cable), atached to a breaker bar.

If it's too tight, you can try to heat the bung (the area where it screws into the cat) with a blowtorch carefully for a minute or so before-hand. The heat causes the cat threads to contract, helping to loosen the sensor.

Unplug old, plug in new, screw in new (with a dab of anti-seize on the sensor threads.
Old 01-18-2005, 02:26 PM
  #7  
AudiWorld Super User
 
JHam_CT's Avatar
 
Join Date: Feb 2004
Posts: 2,202
Likes: 0
Received 0 Likes on 0 Posts
Default What engine code do you have?

ATW's can use the $25 sensor from impex. All other engine codes need the right sensor- which is generally $$. It either works or it doesn't, no need for a review - do not try to splice a generic one in.
Old 01-18-2005, 02:41 PM
  #8  
New Member
Thread Starter
 
unknownvirus's Avatar
 
Join Date: Aug 2003
Posts: 193
Likes: 0
Received 0 Likes on 0 Posts
Default Re: What engine code do you have?

im not sure..whats the easiest way to check?
Old 01-18-2005, 02:48 PM
  #9  
AudiWorld Super User
 
JHam_CT's Avatar
 
Join Date: Feb 2004
Posts: 2,202
Likes: 0
Received 0 Likes on 0 Posts
Default here

<ul><li><a href="https://www.audiworld.com/search/">STFA</a></li></ul>
Old 01-18-2005, 05:11 PM
  #10  
AudiWorld Super User
 
Ritz's Avatar
 
Join Date: Oct 2003
Location: Northern VA / DC Area
Posts: 5,299
Likes: 0
Received 3 Likes on 3 Posts
Default

He said '97 1.8T so it has to be an AEB engine.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Abcaudi
A8 / S8 (D3 Platform) Discussion
15
09-30-2017 09:04 AM
jpatino
A4 (B6 Platform) Discussion
0
06-14-2011 02:47 PM
Ryan in T.O.
Canadian Discussion
1
11-03-2008 06:10 AM
knilfer
Rocky Mountain Discussion
0
09-12-2007 03:53 PM
97a428q
A4 (B5 Platform) Discussion
0
03-13-2001 07:42 PM



Quick Reply: need to replace front o2 sensor



All times are GMT -8. The time now is 12:03 PM.