Ok, well I took it to the dealer Sat because they had time to take a look at
it. They found the same codes, then reset the computer to look for hard faults
(according to what they said was the troubleshooting procedure for this). The
codes went away, engine light was off, and truck runs fine. They didn't charge
me anything and said I would have to bring it in during the week next time this
happens when they have more experienced techs working.
I went home and checked the injectors (all around 12 ohms), reseated every
connector I could find, and swapped out the ASD relay. I did notice a little
bit of arching or scorching on a couple of the relay contacts. Is that normal?
I recall reading about the TPS as well in another problem causing rpm
fluctuations. So I'll look into that, see how much that part is and how
difficult it is to replace.
thanks guys.
In article <ccbgff$36f$1@bent.twistedbits.net>, andy-dml@levyclan.us (andy
levy) writes:
>
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On 7/3/2004 1:21 PM, dcardshark@comcast.net wrote:
>
> | I've had this problem over the course of several months now. It starts
> out with
> | the engine rev'ing up 300rpm for a second or so and then down, usually at
> | constant highway speed but has also done it driving around town. This
> | fluctuation in rpm will continue for a while and then the engine light
> turns
> | on. In the past, the problem would go away and the light would turn
> off after a
> | couple of trips.
> |
> | I just found out how to check the codes and did that last night when
> the light
> | came on again. I get P0203 through P0208, which are listed as injector
> circuit
> | malfunction on cylinders 3 through 8.
> |
> | Anyone know of the cause/fix for this? I'm driving from CA to TX about
> a week
> | from now and would like to fix this if possible.
> |
> | If not, I'll have to try to get it into the dealer on Tuesday.
>
> The RPM surge is typically a failing TPS (Throttle Position Sensor).
> But with those other codes tripping, it may not be.
>
> - --
> - -andy
>
> http://home.rochester.rr.com/alevy/dakota - andy-dml@levyclan.us
> - --------------------------------------------
> "Whatever Adam does, do the opposite and you'll be fine"
> -Bob Tom
> - --------------------------------------------
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