Paul Dwyer

FWIW - No issues with the miss returning so plugs and wires appear to have been it. Trans is still shifting poorly when I first head out cold so that was and is unrelated...dealer said they could not reproduce of course. I have a warranty until next March, just hoping it gets a lot worse before then if its an actual mechanical issue.

last two:

I got the truck back last night, haven't had a chance to drive it much yet but it does feel smoother overall. Need to drive it more to see how it behaves. What I see on the plugs is the gaps are all over the place...especially Cylinder 1 is way different gap wise than the rest. Cylinders 7 and 8 have a spot with buildup or defect on the porcelain. Cylinder 6 porcelain is darker than the rest. At least half of the plugs appear to be a little wet on the threads...I brought this up to the techs but they didn't seem to think it was out of the ordinary. The plugs don't look fouled to me but with the inconsistencies in gap, porcelain defects/buildup on 7/8 etc... I wouldn't be completely surprised if a couple of them were causing misses. Here are the plugs (I have to do a few pics at a time so next post will include the remaining two pictures): Cylinder 7 porcelain blemish:

Yes the trans was serviced at the dealer last October with no change/improvement, not sure about PO.

I don’t remember the shifting being like that when I got the truck. Not sure when it started I’d say in the last year/year and half or so...maybe it’s a learn issue or maybe related to engine (but it hasn’t felt like the motor is running rough when it does it). When it comes to the coils after the plugs and wires replaced if it happens again I’ll definitely move the coil pack on my own if it reports a specific cylinder. Probably a good time to get a better scanner (I have a cheapo that only reads active not history codes...). The dealership just seems to want me to pay them to throw parts at it...I can do that on my own and only went to them due to service contract.

Truck has 58k miles on it with the 6 speed auto, I've had it since around 35k. For some time I have been having what I would swear is transmission shifting trouble. Hesitation shifting/bogging particularly when first heading out (cold)...if I hold the accelerator where it is while it's doing it or back off for a bit long enough, it will then "release" and shift ok... if I slowly and continuously press the accelerator more and more it will suddenly downshift + slam into gear, unsettling for me and for passengers and very noticeably "wrong". Usually accelerating *hard* from a stop it is fine, usually a problem at light to moderate acceleration. I know these trans 'learn' and perhaps mine needs to be unlearned. I have been waiting/hoping for a CEL TBH...as I have an extended warranty (service contract) through at least March of 2021, and I don't expect much diagnostic help from the dealer without it. On Sunday I got a blinking CEL (which I know means misfire) so immediately pulled over and shut it off. Started it back up and it hasn't done that since. I took it to the dealer with these symptoms. The service advisor claims only code initially pulled showed P0300 (random misfire) but the tech said they could see that cylinder 7 had misfired (k...how was that not showing a P0307 instead???). Their suggestion was plugs and wires since it was "random" misfire...at 58k??? So for now...I'm going to play ball, and pay the ridiculous price for them to do the plugs and wires (yeah I would normally just do this myself)...because I need to go out of town this weekend and I want it on record. I'm also getting my plugs and wires back which I asked to be labeled with the cylinder numbers. My real concern here is it is something much worse (AFM lifter on 7) or even with separate trans problems....and it won't break "enough" before the service contract runs out... Any thoughts or suggestions?