[R/TsRock]

Hi Guys,
Real cool site here.
I hope someone here may have some insight.
I have an 02 R/T with 110,000 miles on it.
2 days ago I fired her up to go to work and noticed a few minutes into my drive that it appeared to be mis-firing. Got to work, did the key dance and got P0352 for an Ignition Coil.
We had a look and noticed that the coil on cylinder 3 looked burned from the inside. Now I know the code wasn't for that 1 but based on how it looked we swapped it out with a new 1.
Things got worse. Now I have P0351 all the way up to P0356. What are the odds that all 6 coils failed at once....I think almost 0 myself.
After tinkering with it for a few hours I could find nothing wrong.
GRRRRRR!!!
Finally sent it to the stealership. Here's where it gets interesting.
They had 2 techs go over it and both agreed 95% that it was the water pump. Now I have to tell you that I was immediately skeptical of this.
They said that the bearings were shot and of course as it is belt driven it was locking up just enough to throw the timing out a hair. (Still in alignment but just enough to cause the misfiring)
As it was also leaking a bit from the weeping hole it was time for a new 1 anyway. Of course while they were there I had them change the timing belt which was overdue anyway.
So parts, labor, and diagnosing have run me almost $1300 Canadian already and guess what? The dealership just called and said they were still getting every code and it is still running like sh*t.
They are now leaning towards the PCM.....Thoughts guys?
These do not go bad too often in my experience...I would be more inclined to think that it is a connection somewhere.
I work full time and have a growing business so I really do not have much time to deal with this sort of stuff anymore. (add to that it is minus 30C here which is about -26F) and doing anything now is almost impossible.
Question.....Should I continue to let them try to troubleshoot the problem to the tune of $120.00 an hour?
Swap the PCM? (which by the way up here is worth a cool $1200 just for the part)

Possible intake gasket? They can be a real bit*h to find...

Your insight and thoughts are gretly welcomed!

Also thought I'd mention that the dealer asked if I fired the car up with 1 of the coils off...Could that affect the PCM enough to kill it? (I did but can not see that causing a PCM failure?)
I have done it to 2 of my other cars which also have coils...no issues ever. Thoughts there?

[peva]

If you mean that the coils were not on the plugs but were still wired up to the harness (primary) - that could damage the coils by spinning the engine with ignition on. I don't know about damaging the PCM if the coil was totally disconnected - as a circuit designer, I don't know why that would be the case, but maybe so.

When connected to a spark plug, the coil output voltage will be limited by the initial ionization voltage of the spark plug gap (20k-30k volts). The coil's insulation is designed to handle that voltage. If it is not connected to the plug, it is able to go to voltages well above what its insulation can handle (60-80-100k volts). The insulation will arc over (surface arc) or punch thru (literally burn thru a little hole), and the surface of the arcover or punch-thru hole will carbonize. That carbonized track (carbonized insulation material) is conductive. The coil is ruined when that happens because now it has an easier path to ground than thru the spark plug gap.