Main IndexAuto Repair Home Search Posts SEARCH
POSTS
Who's Online WHO'S
ONLINE
Log in LOG
IN







Oxygen Sensor Replacement (2000 VW Bora/Jetta 2.0L)


  Email This Post



MKD
New User

May 1, 2012, 7:50 AM

Post #1 of 3 (2974 views)
Shortcut
Oxygen Sensor Replacement (2000 VW Bora/Jetta 2.0L) Sign In

For a while now, mums car has been having some issues.

-Poor fuel economy
-Rough idle
-Turns off whilst slowing down to a stop sometimes

We took it to a mechanic who ran a Diagnostics and he told us that the O2 sensors are failing. The post-cat O2 sensor is pretty much dead, and the pre-cat sensor is working, but not as good as it should.

I went ahead and ordered both sensors, and replaced the post-cat today.

I read a on a few forums that driving it around for 15-30mins to let the ECU readjust the sensor to perform accordingly.

However, after driving it for >30 mins, it has gotten worse.

The rough idle stayed the same, but the turning off whilst approaching a stop became more frequent.

I am yet to install the pre-cat O2 sensor, but I need some help getting to it and running the cable behind the heat shields properly.

The only other thing I can think of is faulty/dirty MAF which I'm planning to try and give it a clean with an MAF cleaner first, before ordering a new one (hopefully I wont have to)

Any other suggestions?

Thanks.


Tom Greenleaf
Ultimate Carjunky / Moderator


May 1, 2012, 8:41 AM

Post #2 of 3 (2949 views)
Shortcut
Re: Oxygen Sensor Replacement (2000 VW Bora/Jetta 2.0L) [In reply to] Sign In

Not in that club. Driving it around is not going to repair a really/truly bad O2 sensor but can help to burn junk out of a converter. You've had the hands on diagnostics done that condemned it so when you get it put it in ASAP. Pre-cat O2 sensor can make a vehicle run lousy and the longer it is allowed to run lousy the more you are risking destroying the converter,

T
_________________________________________
Long retired now


Hammer Time
Ultimate Carjunky / Moderator


May 1, 2012, 10:29 AM

Post #3 of 3 (2935 views)
Shortcut
Re: Oxygen Sensor Replacement (2000 VW Bora/Jetta 2.0L) [In reply to] Sign In

TRhe downstream sensor has absolutely no control over fuel mixture. It's a Cat monitor only.




~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.





Oxygen Sensor Replacement (2000 VW Bora/Jetta 2.0L)


  Email This Post
 
 






Latest Forum Post
Hi My VW Jetta 3 1998 model (227 000 km on the clock) is making a clacking noi...
I JUST GOT A CHEVY SILVERADO 2500 VORTEC ENGINE SIZE 3500 WHEN IM DRIVING AND PI...
YES I HAVE A 1999 MITUBUSHI GALLANT 2.4 L V6 I WAS DRIVING AND IT JUST STARTED S...
i just bought it, it hadnt been started for about a year but ran fine when i sta...
Hello, I have a great looking 1985 s10 pickup 4.3 carburated with 80,000 miles....
2000 Nissan Maxima. Yesterday, the engine temp started shooting up quickly upon...

Feed Button


Used Car Search
Used Car Price Ranges:
Under $5,000
$20,000
$35,000

$10,000
$25,000
$40,000
$15,000
$30,000
$45,000
Over $45,000
Search used Cars By Manufacturers:
Used Acura
Used Audi
Used BMW
Used Buick
Used Cadillac
Used Chevrolet
Used Chrysler
Used Dodge
Used FIAT
Used Ford
Used GMC

Used Honda
Used Hyundai
Used Infiniti
Used Jaguar
Used Jeep
Used Kia
Used Land Rover
Used Lexus
Used Lincoln
Used Mazda
Used Mercedes-Benz

Used MINI
Used Mitsubishi
Used Nissan
Used Porsche
Used Saab
Used Scion
Used Subaru
Used Suzuki
Used Toyota
Used Volkswagon
Used Volvo
2010 Honda Civic
$15,770
2004 Jeep
$8,991
2012 Mustang
$22,990
1997 Honda Cr-V
$4,490
2010 Toyota Prius
$17,496
2010 BMW 328
$26,980




Automotive Forum Categories
Automotive Repair
Auto Body Repair and Refinishing
AC Auto Repair Help Forum
Automotive Wiring and Electrical

Auto Insurance and Car Financing
Automotive World
Brake Systems
Car Stereo Repair Advice
Car Troubleshooting
Engine and Car Noises
Engine Fault Codes
Engine Troubleshooting
Exhaust System Repair

Steering and Suspension
Tricks of the Trade
General Discussions
Car Shows and Events
The Bargin Bin
Motor Vehicle Inspection
Car Care Tips
Traffic Ticket Help
Car Racing

Gasoline, Motor Oils, Concept Cars
Remote Control Cars and Vehicles
Truck Repair
Truck Repair Advice


Truck Engine Repair
Truck Suspension Repair
Motorcycle Repair
Motorcycle and ATV Repairs

Motorcycle Body Repair
Motorcycle Clutch Repair
Motorcycle Engine Repair
Motorcycle Seat Repair
Car Forum Posts - Sitemap


Search for (options) Privacy