What about that sensor that detects barometric pressure at startup?
I don't know where it is or how it works. Anyone with a FSM?
> Ok, if everyone remembers, my friends 97 V-6 automatice Dakota 4x2has been
> acting up in the past. His performance mods are as follows: Flowmaster 40
> series split into dual 2-1/4" exhuast, Mesa high flow cat, K&N FIPK, had a
> JET chip but it is not installed at the time, Autolite 3923's, MSD 8.5mm
> wires, Borg Warner brass cap&rotor, 180 thermostat, MSD 6A with MSD tach
> adapt pn 8910 (the MSD was throwing a code 43, according to MSD some
Dodges
> do it and some don't. It no longer gives that code since the tach adapter
> was installed at MSD's recommendations.). Ok, what his truck is doing is
> after being cranked the first time after sitting over night, it does fine.
> Let it run about 3 minutes and turn it off. For the rest of the day, (
> unless
> it sits like 5 hours) when he cranks it up, it revs to ~800 - ~1000 rpm
and
> then fall on its face dead. The only way he can keep it running is to
> feather the gas and slowly ease off until it stays running. Sometimes
that
> requires him holding the gas down and keeping the motor @~900 rpm and
> putting
> it in drive. Once he is rolling and can get down on it, it will stay
> running
> fairly well till it smoothes out. Oh yeah, the engine is throwing no
codes
> either and the check engine light does nothing while this happens. Here
is
> a
> list of what we have replaced (in order): 1)did a complete tune up (hence
> the
> new performance wires, plugs, etc...) - did no good. 2)Crank position
> sensor
> (trying to solve the code 43) - no good 3)TPS - did nothing 4)Camshaft
> Position Sensor (aka pick-up coil in distributor) - did a little good
5)MAP
>
> sensor - helped getting the cranking rpm up to 1K. At this point, it
would
> still die upon cranking. We put a fuel pressure gauge on it hoping it was
> the fuel pump. The fuel pressure remained rock steady, even during the
> engine dieing at 48 psi. So we took it to the Dodge place and asked them
to
>
> scan the computer for codes and check sensors. Of course the damn thing
> wouldn't act up there, kinda like a little kid at the Doctor's office!!
> Pissed us off!! The dealer hooked it up anyway, and said it was throwing
> some weird codes, codes that apply to the V-10 (no. 9 injector not firing,
> primary side of second coil dead, etc...), but the codes wouldn't show up
on
>
> the Dash. Go figure. Ok, so we swap in a new computer. This is what
> really
> pissed us off, didn't do a DAMN thing. And of course since it is
electronic,
>
> Dodge won't take it back!!! So now we are stuck with a new computer that
> ain't worth anything but a back-up paper weight. Any ideas? The only
> sensors we can think of replacing anymore are the coolant temp sensor, the
> air intake temp sensor. We thought about the IAC, but if we take off the
K&
> N
> fipk, we can hear that thing sucking in massive amounts of air. That and
> once we have it running, you can click on the a/c and hear the iac cycle
on
> and off with the compressor. The o2 sensors were replaced about 5,000
miles
>
> ago, so we think they should be ok. What else can anyone think of? We
have
>
> tried bypassing the MSD and reseting the computer. No good, works for one
> crank, then back to falling on its face. Any ideas? We are shooting in
the
>
> dark now, pissing in the wind, trying to pee in the toilet with the lights
> off, scratching our heads, scratching our butts, piling beer cans up into
a
> pyramid just to have something to do, unplugging things and re-plugging
them
>
> to make it look like we know what we are doing, scratching other parts
that
> I
> can't mention, and then finally giving up. We would take it to a
dealership
>
> up here, but they told us they want $118 to hook it up to the scan machine
> for the first hour (doesn't matter if they do it for 5 minutes or 1 hour,
> they charge us for one hour) and then $55 an hour after that to keep using
> the machine. If they have to trace down the electronic problem with a
> volt/ohm meter, they want $80 an hour. That kinda floored me. But they
are
>
> the only shop around here I trust. I would do it, but I don't feel like
it,
>
> not with all the other projects I have going on. This sucks. Help,
please!!
> !
> TIA
>
> Will
> 96 Paxton huffed NOS intercooled 408 Dakota
> NEW!!!: 89 Shelby Dakota
> NEWER!!!: 69 Dodge Charger (wife's new playtoy I have to work on. DOH!!!)
>
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 11:58:43 EDT