Glad to hear you got to the bottom of your misfire woes. Rock Auto is very good about accepting returns.

 

Albonano right on!

When I "tuned up" Joels 2003 S Type, he had purchased coils from Rock Auto as well. After putting the 3.0 back together, I found that #5 coil had a hairline crack in it. I was sure if it were shipped to me like that or if somehow I cracked it. Anyways I dismantled the plenum again, replaced the cracked coil with a new one and used an old coil for #1 cylinder until the replacement came.

Sorry for the long story but heres the punch line. Rock Auto replaced the coil for free along with shipping.

 

I like Rockauto, have ordered from them multiple times over the years for spark plugs, brake pads, and a few other parts for multiple vehicles. But perhaps they are not the best source for Jaguar coils. Seems like an unusually high failure rate based on such a small sample size....

My research prior to purchasing our S-Type in December 2008 told me that Jaguar finally solved their coil problems by the 2005 model year. Yes or no?

 

Coil problems? Mine lasted 114,000 miles. I'd hardley call that a coil problem on Jaguars part.

As far as Rock Auto goes, I can't fault them much either. This is the first bad part they've ever shipped me and I've been doing business with them for years.

 

Glad it worked out. Again I had the same thing happen to me with Rock Auto. They are a great outfit to do business with though and took all of my coils back for a refund.