[Diy_efi] O2 says rich, car runs lean..

[Frank McCracken]

Thanks fella's,
The car is also subjected to many short trips. I'd better fix that.


----- Original Message ----- 
From: "Michael Richards" <michael at fastmail.ca>
To: <diy_efi at diy-efi.org>
Sent: Tuesday, June 13, 2006 10:37 PM
Subject: Re: [Diy_efi] O2 says rich, car runs lean..


> On Tue, 13 Jun 2006 22:07:04 -0700, Frank McCracken wrote...
> 
> > Michael,
> > Could you please elaborate on o2 sensor placement? I have my 3 wire
> > sensor mounted facing up at about a 45deg angle.
> > Frank.
> 
> If the sensor is facing up at a 45 degree angle it is bad. This has been
> known to kill sensors (years ago I killed a few expensive sensors from
> this). On some cars condensation will get in there and settle on the
> sensor. Then the sudden heat shock will break the ceramic based element
> inside. This is how the bosch rep describes it. I do know that I fixed
> the location on my car and it stopped killing sensors. You can probably
> get away with it a little lower than midway on the pipe but it's a good
> rule of thumb. I suspect too that the bottom of the exhaust may suffer
> from a higher HC content as it will be heavier but I've never done any
> experiements to validate this. I like the heat pen trick given in
> another post. Normally I just rev the engine a little and with an IR
> pyrometer look for about 500C. The exhaust temps during cruise usualy
> make up for the difference. 
> 
> -Michael
> _________________________________________________________________
>     http://fastmail.ca/ - Fast Secure Web Email for Canadians
> 
> _______________________________________________
> Diy_efi mailing list
> Diy_efi at diy-efi.org
> http://lists.diy-efi.org/mailman/listinfo/diy_efi
> 
> 
> -- 
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.394 / Virus Database: 268.8.3/362 - Release Date: 6/12/2006
> 
>