Just a heads up for any V10 guys: You engine takes the same coil. I was surprised to find may listed for the V10 were listed for about twice the price!

 

Thanks everyone for the responses. I first tried to clean the 2 bad ones and loaded them with dielectric grease, but that only lasted about 1 trip to town and back (25mi). I ended up replacing both coil packs the following weekend (w/ Denso from Napa). So far so good. Side note: I replaced the plugs last year and have less than 10,000mi on them. I therefore assumed it wasn't them. I also checked the O2 sensor while I was at it and that looked almost new. Fuel filter is next on list. Running good now, so no rush.