I expect it's a Denso part so what a Bosch guy will know...

You can probably get it tested / fixed for a lot less than a replacement.

 

Most Bosch service centers also cover DENSO, DELPHI etc. so I don't know why you would be having a dig at a Bosch guy having what is most likely a very good opinion.

I can get a warranted second hand unit and coded to the car for just over £100, so I'm not sure its worth test / repair route, I will know more when I get time to talk to the other Jag guy who can do the coding etc.

 

Update on msifires

After talking to the Jag guy, and going through everything, he remembered another x type that led him a merry dance with random misfires which turned out to be an intermittently faulty coil pack which was actually new, but a Chinese "Lucas" part. He also said that the coils in the Jags are only good for approx 60K miles, mine is now on 66K

So I have changed the coil packs on bank 2 and this has solved the problem, it looks like one of the coil packs must have been shorting to earth on either the supply feed on the sense line after it was getting warm.

The situation the jag guy had was also causing random misfires, but affecting both banks, Cruise not Available also comes on with these misfires.

I need to change the coils on Bank 1 soon before they start causing problems as a preventative measure

 

Hey guys!

Sorry that I haven't posted in a while, had to wait almost a month for some of the parts to arrive.

Finally had a chance to work on the car and it looks like the problem has been fixed!

My STFT was at 25% during the misfires so I figured it was still related to a vacuum leak.

I've replaced the spark plugs along with the upper and lower intake manifold gaskets.

The car is no longer misfiring at all and actually drives a lot smoother too!

Thanks everyone for their help! I truly appreciate it

I primarily used video as reference, should anyone else need to do this!

 

Good to hear!

 

I have a question regarding ignition coils for a 2005 Xtype 3.0.
Does anyone know if one brand is better than another?
any recommendations?

 

Stick with Denso or Delphi to be safe, they are very good brands, Denso was factory fit, but Delphi are as good IMO, just keep away from cheaper brands.