[V8] Rough Engine

Tony and Lillie tonyandlillie1 at earthlink.net
Wed Aug 27 13:30:38 PDT 2008

O2 was also my first thought. Unplug it and see what the car does. It's not 
used by a cold engine, so that may be why you don't have any cold running 
problems. If the car runs better/smoother it's time to replace. I like to 
use the 4-wire suggested by many. I've had great results with it.


----- Original Message ----- 
From: "Ed Kellock" <ekellock at gmail.com>
To: "'Brad Hartman'" <info at speakoutpro.com>; <v8 at audifans.com>
Sent: Wednesday, August 27, 2008 3:09 PM
Subject: Re: [V8] Rough Engine

> Oxygen sensor is my first thought.  Then breather hoses leaking.
> Then engine temp sounds normal.  Could it be that your memory of 1/4 mark 
> on
> the gauge was during the winter?
> If you are indeed seeing higher engine temps now, I think that is 
> compatible
> with vacuum leaks as the engine may tend to run lean and therefore hotter.
> Ditto the OXS if it's leaning the engine out too much.
> Plugged catalytic converter(s)?
> Ed

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