In a message dated 3/12/01 8:01:58 AM Eastern Standard Time,
TNJG999@email.msn.com writes:
> > Well over the past two weeks my truck has ran fairly well, only having one
> > or two stalling situations. I would say this last week though the truck
> > really hasnt had any problems and has ran very well. I put 300 miles on
it
> > from Friday to today.Well today I replaced the AIS(aka IAC) Sensor and
the
> > Throttle Position Sensor. I ran errands all day, and put probably another
> > 100 miles on my truck without a glitch. It had a little more pep to it
> > actually. I get to my girlfriends apartment, and about an hour later I am
> > about to leave in my truck. I go to start it and it just cranks and
cranks
> > and cranks. There was fuel pressure also, cause I checked at the relief
> port
> > and tons came out; So I know there was plently of fuel pressure.
> Typically
> > when the pump dies, the fuel will just just trickle out of this test
port.
> > All connections are fine at the coil and there is spark. Well I think
that
> > the MSD Ignition died again, so I unplug the MSD unit and plug back in
the
> > stock unit. It fires right up! Then about 1/2 block away it stumbles bad
> > when attempting to accelerate from a stopsign and dies. Luckily it
> restarts
> > and I drive about 40 more yards where is dies again and wont restart.
Just
> > cranks, cranks, cranks. Once again, plenty of fuel pressure and there is
> > spark. I try to keep restarting it and finally after 3 times trying it
> stays
> > running. It ran for about one minute then dies. I tried to restart is yet
> > again and after many cranks it fires up and is idling rough. As I go to
> pull
> > away it dies and wont restart. I push it off to the side and hit the
> > hazards. So I unplug the stock ignition and plug back in the MSD unit. It
> > fires right up and is idling great. I drove it about 1 mile before it
> > started to try to die. I put the tranny in neutral and revved the heck
out
> > of it to keep it from stalling. I drove home about another mile or so and
> it
> > died once more, but restarted just fine. What is going on here? I have an
> > Bosch 02 Sensor I am going to install this week; probably once I get home
> > from work actually(weather pending). Hopefully I can get to work in the
> > morning! HELP!
> > Parts replaced since this problem started:
> > -TPS Sensor
> > -MAP Sensor
> > -AIS Sensor
> > -Dist. Pickup Coil, aka 'Hall Effect' Sensor
> > -Autolite Copper Plugs
> > -NAPA Brass Dist. Cap
> > -NAPA Dist. Rotor
> > -I have a 02 Sensor waiting installation and debating on wethere or not a
> > plugged/bad catalytic converter would cause all this crud. I dont think
so
> > since it is very intermittent; lately atleast. Could a plate within the
> > battery be shorting out and causing the truck to stall? Couldnt be the
> > starter solenoid, could it? Any suggestions and help would be greatly
> > appreciated.
> > Kyle
> > 93 Dakota 4x4 V6
> >
> >
Kyle,
The battery could be a possibility...I had a similiar problem, however it
doesn't explain the stalling, it only explains the hard starting. I'd think
it to be a plugged cat, intermittent coil or crank position sensor. Also
check the position of the distributor. Make sure it's tight and hasn't moved,
because if so it could mean a very light spark, causing the truck to miss
sometimes because it essentially has to cross two gaps (like when you
decelerate and the alternator voltage goes down, creating a weaker spark that
can't cross the gap).
Did you check the hole the MAP sensor pulls vaccuum through for debris.
I clamped the MAP tube once just to see what happened and it died so fast you
would have thought I stuck a wrench in the fan. Pull the tube off and shove a
paper clip through to check. What about your belly pan, check that out lately?
I'll see if any more ideas pop into my head throughout the day, but this
should keep you busy for a couple of days.
-Austin
Vipertruck - "The Anti-Rice"
Supercharged 6.0 V8
<A HREF="www.angelfire.com/ny/vipertruck">The Vipertruck</A>
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