Question about 2001 Volkswagen Jetta TDI
This will be a slightly long post.Please bear with me. The catalytic converter in my 01 VW Jetta GLS was changed roughly 2 years ago by the previous owner and I understand it was not a genuine VW part.
1. The check engine light has been on for sometime.
2. It used to come on and go "off" intermittently when I filled up gas.
3. It sometimes goes off after an oil change is done, but usually returns, first intermittently and then steady.
4. The fuel efficiency is roughly 30 mpg in the first few days after an oil change, but dips slowly week after week until the next change without too much of a change in driving conditions.
The code usually indicates area near the catalytic converter:
1.Late last year, VW diagnosed it as coolant temp sensor having failed and replaced it.
2.A mechanic saw "Cat below effficiency" and "oxygen sensor bank/ sensor no activity" and replaced one of the O2 sensors.
In the last week, the car seems to not respond when I try to go harder on the throttle, especially from low speeds, despite going to/ being on the lower gear.
Are they related? What would be suggested to do?
If your catalytic converter is "below efficiency" or otherwise clogged, you will lose power as you drive and the vehicle heats. The more you drive the vehicle, the worse the problem will become. The exhaust can't escape properly through the catalytic converter, therefore your engine won't run properly. Your issues are related, and if you replace your catalytic converter they should go away.
Posted on May 26, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Nov 16, 2014 | Cars & Trucks
Aug 10, 2008 | 1999 Nissan Maxima
Sep 12, 2014 | 1999 Chevrolet Lumina
Aug 14, 2014 | Cars & Trucks
Oct 15, 2011 | 2000 Chevrolet Blazer
Oct 17, 2010 | 2007 Kia Spectra LX Sedan
Jan 12, 2010 | 2002 Pontiac Grand Am
Sep 18, 2009 | 1994 Acura Integra
626 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: