Kyle, I may have missed this earlier but does this happen when the engine is hot
or cold? Have you checked the plug wires, including the one from the coil to the
distributor cap? When you did/do give them a good tug and twist them around when
you're measuring the resistance. Just some thoughts.
Doug Fedeli
Kyle Kozubal wrote:
> > OK...next question on this...(Been thinking about it some more)
> >
> > Let's go back to the basics for a second: He's replaced the sensors, IAC,
> > had a tech scan the computer (analyze it), changed fuel pump and sock, and
> > it still dies at idle. Has anyone checked the preset screw on the TB yet?
> > I know that the IAC controls the idle...but if the blades are too far
> > closed...it will stall. (Found that one out the hard way...was playing
> > around with the screw a long time ago.)
>
> True Bernd, and I actually looked the 'idle adjustment' screw on the spring
> plate, which basically acted like a door stopper and allows the throttle
> blades to spring back and close the bores, just enough to keep idle down and
> let the truck get enough air flow to keep running. I really though about
> this, but couldnt justify messing with it/adjusting the blades open more at
> idle, since I have never messed with this adjustment screw. The one thing
> that still gets me though, my truck has been idling higher than normal since
> all this started. It always idles and 650-700rpms, and throughout this
> ordeal, the truck has idled at 900rpms-sometimes even 1000rpms. When the
> truck dies is when the rpms actually drop back down to the 700 range, then
> it cuts out and dies. Thankfully it restarts. Like I said though, it has ran
> great the last two days. Is there a given factory spec. measurement on how
> far in/out the adjustment screw should be at.......other than saying the
> truck is supposed to idle at 600-650rpms. I mean I could open/close and keep
> playing with this adjustment screw, but I dont want to screw anything up
> more if there is no need to mess with the screw. Oddly enough also, the
> truck runs considerably worse when the MSD ignition is unplugged and the
> stock ignition is put back to work. getting strange isnt it?
> Kyle
> 93 Dakota 4x4 V6
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