Re: Heated or not O2 sensor

[Shannen Durphey <shannen@grolen.com>]

I have a standard O2 sensor mounted in the collector of one header,
prolly 18" from the ports in my truck.  This one works ok...   But
using a heated sensor would have been a better idea.  They're not too
expensive and easy to install.
Shannen

lpwcruzr wrote:
> 
> I'm wondering how far down the exhaust system can my O2 sensor be before I
> need to use a heated sensor. I have a 94 GM TBI 350 that I put in an older
> vehicle. As I'm sure you all know, the original location was in the driver's
> side exhaust manifold. I couldn't use the original manifolds.  The exhaust
> shop did not listen very well when they put the bung for the O2 sensor in.
> The first time they mounted it about 40" from the manifold, in the Y pipe,
> where the two sides of the exhaust join together. I took it back and told
> them where it was originally and to move it closer. Well it's closer, but
> it's still 18" away from the manifold. Is this still too far away for the
> one wire O2 sensor? The same year 4.3L V6 had a heated sensor. I believe it
> was mounted in the Y pipe. Could I just use this sensor if I need a heated
> one?
> 
> I am wondering if this is the source of an off idle hesitation this truck
> has when it is cold sometimes. The problem seems to get better as the truck
> warms up. Ideas?
> 
> Paul Washburn
> lpwcruzr@netzero.net
> 
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