Re: Re: Dakota acting VERY funny lately.

From: Richard A Pyburn (rap777@juno.com)
Date: Wed Feb 23 2000 - 09:10:21 EST


Isn't the O2 sensor bypassed during the warm-up phase? If it is and
everything's ok when warm it would seem the problem is not the O2 sensor
but something else.

Richard in San Antonio

On Tue, 22 Feb 2000 21:54:32 -0500 "Bob King" <k85go76@erols.com> writes:
> I think that the O2 sensor may be it. I am having the same
> "hiccuping"
> (backfire can be induced with throttle) on my '95 5.2. Granted it
> has
> 119,000 mi on it, but most are highway and I baby this thing with
> routine
> maintenance. Last July, I replaced the O2 sensor with a new Borg
> Warner
> unit. It ran fine at the time and for a few months afterward, but I
> do
> remember word going around that a "bad lot" of O2 sensors had been
> put out
> by BW about the same time as I replaced it. Also got a trouble code
> that
> the computer was sensing a lean condition (O2 related) and thinks
> more gas
> is needed. This only happens when the engine is cold ...goes away
> after
> fully warmed. Is this the case with yours?
>
> Bob King
> Pennsville, NJ
> -----Original Message-----
> From: Dester223@aol.com <Dester223@aol.com>
> To: dakota-truck@buffnet.net <dakota-truck@buffnet.net>
> Date: Tuesday, February 22, 2000 9:19 PM
> Subject: DML: Dakota acting VERY funny lately.
>
>
> >Okay. Just to fill you guys in. I have 97 dakota CC v6 auto with
> fans,
> >pullies, ported TB, relocated IAT, K&N gen2 alike intake, upgraded
> 2.5"
> >y-pipe, soon to be headers, dynomax catback, jacob's omni ignition,
> and 180
> >degree stat.
> >
> >I just changed the timing chain and I KNOW for a fact that it's
> aligned
> >right, because I turned it over to TDC, and lined the distributor
> and
> >everything up.. Anyways. I've been noticing that after I start
> up.
> (within
> >5 minutes) If i drive. Sometimes it will stumble and seem to
> "misfire"
> and
> >the RPMs will just rev up like 1/2 the cylinders aren't firing.
> basically,
> >it performs like crap. If you give it gas in the time of the
> stumbling,
> >it'll backfire. What gives? My automatic starter has been acting
> funny
> >lately too. It'll blink the lights and not start, whereas it used
> to blink
> >the light and start. Can anyone shine some light on my problem?
> >
> >For maintence. I've been doing routing oil changes with synthetic
> fluids,
> >changed the cap and rotor. new plugs, The engine hasn't been
> neglected.
> What
> >is going on? O2 sensor screwing up?
> >-Dester
> >
> >PS. scanner is picking up zero codes... timing is 16-17 degrees
> at idle
> >(pretty stable now!) distributor "fuel syncronization" is set to
> "0" with
> a
> >snap on scanner.. I just don't get it.?!?!?!?!
>

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