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Date:         Mon, 2 Feb 2015 00:23:07 -0500
Reply-To:     Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject:      Re: Removing stuck O2 sensor
Comments: To: Stuart MacMillan <stuartmacm@gmail.com>
In-Reply-To:  <003701d03e9d$518d59b0$f4a80d10$@gmail.com>
Content-Type: text/plain; charset="us-ascii"

For the stumble when cold you need to look at the injectors for spray pattern and check for excessive deposits on the intake valves and possibly worn intake guides. For the idle hunt this is sometimes common. What is the idle speed with the idle valve unplugged? This should be about 800 on a warm engine. The idle valve needs to always provide some boost to be ultimate control. Normally they shoot for somewhere between 850-950 rpm. For the temp 2 sensor I find that many of the aftermarket ones are not quit right and bad ones come in batches. The OEM ones rarely go bad. Most of the time problems with this circuit are due to the connector or the wiring near it. A bad ground on this circuit creates a lot of havoc as it is shared with the ECU and idle speed controller.

Dennis

-----Original Message----- From: Stuart MacMillan [mailto:stuartmacm@gmail.com] Sent: Sunday, February 1, 2015 11:04 PM To: 'Dennis Haynes'; vanagon@GERRY.VANAGON.COM Subject: RE: Removing stuck O2 sensor

Well, maybe I will leave it as is, this van is exempt from testing. I still have a cold running stumble, and a slight idle surging when warm (900-1000, up and down) after the temp 2 sensor replacement. I'm pretty much out of options now, but I'll look for a vacuum leak before I turn it over to a shop.

Stuart

-----Original Message----- From: Dennis Haynes [mailto:d23haynes57@hotmail.com] Sent: Sunday, February 01, 2015 5:47 PM To: 'Stuart MacMillan'; vanagon@GERRY.VANAGON.COM Subject: RE: Removing stuck O2 sensor

It's not the lift, but having the oxy acetylene torch and knowing how to use it. I last wasted money on the Map gas torch some 25 years ago. It is really limited to brazing soft materials. Need to get steel red hot fast, your need the real deal. Must be nice to live in an area where a shop will remove a catalyst. Without the cat you may not need the O2 sensor. The O2 sensor is there to make the cat do its job.

Dennis

-----Original Message----- From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Stuart MacMillan Sent: Sunday, February 1, 2015 1:50 PM To: vanagon@GERRY.VANAGON.COM Subject: Re: Removing stuck O2 sensor

You can do that because you have a lift! I've given up. Tried MAP gas with an O2 sensor crow's foot tool and could only get it 1/8th turn. At least NAPA loans those tools, but 7/8" is too big, and rounded the corners.

If the treads are buggered, the shop can replace the cat with a pipe & bung, I don't need it.

Stuart

-----Original Message----- From: Karl Wolz [mailto:wolzphoto@q.com] Sent: Sunday, February 01, 2015 12:23 AM To: Stuart MacMillan Cc: vanagon@GERRY.VANAGON.COM Subject: Re: Removing stuck O2 sensor

I use a Stilson wrench and a four foot heavy pipe as a cheater.

Karl Wolz Sent from my electronic umbilicus

> On Jan 31, 2015, at 11:59 AM, Stuart MacMillan <stuartmacm@GMAIL.COM> wrote: > > Well, first attempts with a 22mm box wrench and heat have failed. > Should I break it off and use a regular 22mm socket? Get a 7/8" > special O2 sensor socket, which is slightly larger, so I can put a > long bar on it? Take it to > a muffler shop? > > > > Other ideas? > > > > Thanks! > > > > Stuart


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