Is the sensor corresponding to the blue curve in the second figure the lazy one? I see it only swaps between 0.1 and 0.5.
Noted two weeks ago with thanks now, smiley bugPartsgeek is pretty good. We've bought a few things from them for various cars. Wheel hub assembly for my dad's Astro van, brake kit for my hubby's TDI. They list brands, and that's what's important.
Glad you were able to resolve some of these issues yourself and save some money. The wideband sensors are a bit more expensive than the standard O2 sensors and it is hard to determine at times if the engine has standard or wideband sensors. Many times the scan tool will flag this as it may not show O2 sensors #1 due to the wideband being present.Hi jfoj,
I managed to change the pre-O2 sensor myself after reading some posts here. My mechanic asked for $47 and I'm glad I saved this money so that I can eat Peking Duck on leesburg pike for two more times.
I described my procedures in this post. Hope it will help other novices.
Again, I want to say that for my 2001 Gas 2.0L AVH, the Bosch part number I stick to is 17351. It's working fine. Not sure whether 17085 works.
For sensor reading, it's still around 1.5 volts. And the fuel trim also didn't change. However, it's normal. I had been surprised for a while, but later I realized that the pre-O2 sensor is a wide band sensor which isn't like the conventional O2 sensor operating between 0.1V and 0.9V, but has a much wider operation range. (BTW, the post-cat O2 sensor is still the conventional one.) See the explanation by Bosch.
Nevertheless, I still believe this change is worthwhile for a 100k bug. Thank you for your advice.
Glad you were able to find a shop to do the work for $300, this is a pretty reasonable price, along with money you saved on the Blauparts package, you should not have to worry about your timing belt and water pump for another 70-90k miles.Noted two weeks ago with thanks now, smiley bug
jfoj, BTW, I've also had my timing belt and water pump changed. The old water pump is slightly... BROKEN! (Let me upload the photo later.) I bought a package from Blau parts and it's indeed a deal! Thanks for recommendation. My mechanic charged me $300 for everything. I guess--it's fairly good, isn't it?
I've also been tracking error codes, not yet any code has turned up after several IAD trips (80 miles for roundtrip). I'm happy with my bug!
YES Way overdue really and I am amazed you haven't had any issues with it yet. Do change the transmission fluid ASAP!!! Should really be done every 50-60k miles anyway and in case of your transmission probably every 30-40k miles.Thanks. Yet mine is auto transmission... so which parts of the car do you think I should pay more attention to? Do you think transmission oil should be changed at current status (100k)?
That would work. However, I would order an extra Liter of fluid. Most of the time you will need closer to 3.5 Liters of Fluid for the O1M 4speed transmission. It's better to have the extra bottle on hand and not need it than needing it and not having it.Thanks both!
Mine is 4-speed automatic!
I believe this package fits: Vw Beetle Auto Transmission Fluid Filter Kit - Vw ATF - 4 speed