Very true statement, I've worked at a dealership as a diesel mechanic, and no it's not always the best service. You need to look for the mechanic with a little grey in his beard!!! Some of these young pups tend to forget the basic mechanics of how an engine runs. FUEL FIRE and COMPRESSION. Start there then move on to the more complex stuff. It took my dad a couple of years to drive that home with me. So basically what I'm saying is don't over think a problem. KISS........seeya

 

Ok, here's the notes on the paperwork after picking up the DGC. Tech's Notes : " 100307 P0300 stored and P2308 active. found ignition coil internally open causing misfire dtc's replaced ignition coil and test drove to verify repairs." The van actually had an extra 30 miles on it when I picked it up, so it appears to be a thorough test drive, if that counts. I will open the hood later tonight to try and find the connection you were talking about.

 

Did they finish the drive time sensors?

The only things that can cause misfires are compression leaks, plug, plug wire, coil and since coil is connected directly to PCM a PCM driver. If it was a cam engine like the VVT it could also be a timing issue..

 

sigh...so the same codes the second time, then they replace the coil AGAIN.


Well, you have a connection issue either AT the coil or the harness connector for the upper engine. I guess time will tell if they fixed it or not. There IS a remote chance the PCM driver got damaged but I doubt it on an open circuit.


P2308 wouldn't require that, only the misfire code.



...Vacuum leaks, injector , lying O2 sensor data, contaminated fuel, timing faults (mechanical or electrical), etc...