(800) 853-2651
SHOP NOW

OT- '03 passat O2 sensor

D

Don-Wi

Well-known Member
Would a bad O2 sensor give me a rough idle at times and hard starting when warm? I just had it in for it's 120,000 service and they also did the intake gasket. The front O2 sensor is throwing a code yet, but I couldn't justify over $300 for that right now. Not by them anyways. I'll probably have the local shop do that one.

The only trouble is they don't have the right scanner hook ups for my VW, as they're not an import shop. They do great work on my wifes '97 buick and my '88 F150 though.

As much as I love my Vdub, my next car/truck won't be one. Too much $$$ to keep her going on their assinine maintnance schedual.

Donovan from Wisconsin
 
Seam high I had all 4 replaced on my GMC with a 5.7 vortec v8. They put in the best sensors and labor was $310.00 total.When mine went bad the only problem I had was the gas mileage went right out the window.
 
(quoted from post at 21:12:21 08/10/12) Would a bad O2 sensor give me a rough idle at times and hard starting when warm? I just had it in for it's 120,000 service and they also did the intake gasket. The front O2 sensor is throwing a code yet, but I couldn't justify over $300 for that right now. Not by them anyways. I'll probably have the local shop do that one.

The only trouble is they don't have the right scanner hook ups for my VW, as they're not an import shop. They do great work on my wifes '97 buick and my '88 F150 though.

As much as I love my Vdub, my next car/truck won't be one. Too much $$$ to keep her going on their assinine maintnance schedual.

Donovan from Wisconsin
Click to expand...

Yes it will. The computer is programed so that all sensors have to be working right. In the case of the O2 sensor it goes into default which gives it a rich mixture because it "reads" too lean. It can cause ruff idle because it's getting to much gas and is flooding. It can also really effect the gas mileage. My SIL didn't understand that and figured he couldn't afford to replace his and would just live with the running problems and the "check engine" light. It was costing him about 6 MPG on his Ford truck. Don't take a lot of driving to pay for that in the cost of gas. O2 sensors are pretty easy to change (mat require a sensor socket). They have to be install with anti seize on the threads!!!!!.

That is the big problem with VW here.....90 miles to the dealer.

Rick (former VW owner)
 

Dude..... Look at Rockauto.com.... 30-100 bucks for O2 sensors. Take care of that car and it'll be a long time before you have to replace it (unless it just rusts away or you wreck it... Get you a book and do the routine stuff yourself within reason and your abilities. Biggest mistake folks make is "OMG, I gotta foreign car, better take it direct to the dealer" and the dealers get fat off ya....
It's a volkswagen (peoples car), not a mercedes or lamborgini...

Try disconnecting the battery for a few minutes to reset things and see how it runs. What motor does it have? Did your gas mileage drop recently?
 
If I were buying an O2 sensor for my daily driver, I would buy OEM. Calibration levels of O2's can be off in the cheaper versions and turn on the check engine light. Nissan comes to mind. Their controllers on some of their vehicles are very picky. I have no direct experience with VW O2's though. O2's are maintenance items.
 
Don, while a bad oxygen sensor could cause the issues you are describing, there are plenty of other issues that can cause the same thing. If the sensor is bad it should be replaced. I only use OE level sensors on VW. Too many issues with aftermarket. Your local shop should be able to replace the sensor and clear the code. Even if their scan tool doesn't have Euro, they should be able to get into your controller in generic mode and clear codes. Then if you still have idle and starting issues, then you need to take it to a shop that has the diagnostic capabilities to find the problem.
 
You must log in or register to reply here.

Similar threads

D
VW passat hard start update
Replies
2
Views
782
Don-Wi
D
D
OT Mini vans
2 3
Replies
43
Views
4K
Buckeye Oliver collector
B
Tractor Parts Tractor Manuals

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Copyright © 1997-2024 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top