Re: Fluctuating RPM's

From: Kevin (ksmith@korea.com)
Date: Tue Jul 03 2001 - 19:13:54 EDT


Hw does it run? Any check engine lights, or any differences in performance.
I have a '95 I would love to dis-connect the EGR valve, and when I get the
new 2-bbl M-1 intake I would like to eliminate it altogether. Thanks
----- Original Message -----
From: "Barry" <bmadkins@aol.com>
To: <dakota-truck-moderator@bent.twistedbits.net>
Sent: Wednesday, July 04, 2001 3:04 AM
Subject: Re: DML: Fluctuating RPM's

> That did it Ray! Total cost was $1.07 for the rubber caps to plug the
hose!
> That probably would have been the last thing I would have thought.
Thanks!
>
> Barry
>
>
> "Ray Sulich" <ray.sulich@snet.net> wrote in message
> news:5.1.0.14.2.20010701195716.00a28ec0@pop3.norton.antivirus...
> > At 07:05 PM 7/1/2001 -0400, you wrote:
> > >I have noticed a problem with my 92 5.2 that is consistently getting
> worse.
> > >The rpms fluctuate about 200 when holding the accelerator steady, i.e.
> when
> > >keeping it at 1200, it will drop to 1000, then 1200, about every
second.
> I
> > >can even feel it doing this when accelerating. I was thinking maybe a
bad
> > >IAC, 02 sensor, or distributor cap. Running a MSD 6A, blaster HV coil,
> > >3923's, 8.8 wires, and stock cap and rotor. Relocated the IAT sensor
> also.
> > >Any ideas would be greatly appreciated, because I'm ready to just start
> > >replacing everything, which will get expensive quick. Thanks for the
> help.
> >
> > Same thing happened to me. My local mechanic fixed it for me. Seems
> > something in the Dakota after awhile just tells it to open the EGR valve
> > all the time. Is your truck running rich (does the exhaust smell
somewhat
> > like gas, or do you smell gas when you start the truck?). Anyway, try
> > taking the vacuum line off of the EGR valve and plug the vacuum line (so
> > you don't lose the vacuum). Also, when it happened to me, I got an O2
> > Sensor code in the computer. Mechanics told me that the always open EGR
> > valve caused the code to be generated. When they plugged the vacuum
line
> > going to the EGR valve the code went away and the truck runs like a
champ.
> >
>
>
>



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