My wife was stopped in a parking lot today when our Caravan suddenly died
and wouldn't start back up. There is no spark, but otherwise everything
seems fine--fuel pressure seems fine, and there are no trouble codes in the
I searched around on the web a bit and noticed that there seems to be no
shortage of people having similar problems with Caravans, but I couldn't
find any posts where people came back to report the final resolution.
Rather than tearing apart the whole ignition system, does anyone know what
the most common failure points are in the ignition? I have already checked
the most obvious stuff, namely the relevant fuses, the coil, and the engine
What relays do you recommend checking, other than ASD? The only other relay
I'm aware of that is wired in to the ignition system is the fuel pump relay
(fuel pump is functioning).
wrote in message wrote:
Hi, We have a 97 Grnd Voy and we're having the same problem. My wife was
driving down the road, turned the corner, and the van just DIED. It'll
turn over but but won't fire. We've changed the D.I.S Coil, checked fuses
and relays, and even checked plugs and wires. NOTHING! I've even checked
the fuel pump and all of the fuses and relays but still nothing. I was
wondering if you had found anything yet??? All this electronic stuff is
giving me a huge headache:) Any idea's would be helpfull!
I still haven't gotten to the bottom of this, but signs seem to indicate
that it may be the engine control computer (Dodge calls it a PCM).
Here's what I have found so far: on a '96, 3.3L w/ electronic ignition, the
three wires from the PCM to the coil should be grounding about every half
second during cranknig as the PCM sends its firing signal to the coil
(lighted circuit tester is best for checking this). I found that they mostly
do not fire, although they sporatically fire 4-5 times in a row, and a
couple of times they fired but then got stuck on ground.
I don't think that the circuit should ever be left open like that, which
tells me that the PCM may be doing something funny. I also have learned that
the PCMs on these cars have a significant failure rate. I personally
attribute that to the fact that they put it in the engine compartment--heat
is the number one enemy of solid state components--but I digress.
I'm going to check around tomorrow and see if I can find someone to bench
test my PCM, and also try checking my relays one more time per the previous
post to this group. Otherwise I might see if I can try swapping in a used
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