Hi All, New to the forum, but sad to say it starts with a problem that i really need help with...

I have a 2002 x-type 2.1 V6 that is misfiring. Although misfires appear to be common on the X-type, I seem to have an unusual issue. The car develops a misfire at set points, pretty much everytime the car hits 70mph, and or 3000rpm going up hills (fine when accelerating on flat or downhill). So far I have replaced the coil packs, spark plugs, inlet manifold gaskets, and PCB hose. Potential air leaks checked for. Compression test. injecters checked. The car has been extensively diagnosed at a local garage with a diag machine attached while on test runs at the points of the misfire. graphs show all sensor readings at the failure points are within Jag tolerences, fuel trim levels and the fuel pressure is excellent. The mechanic can see no valid reason for the misfire and suspects a potential ECU fault? Car works absolutely fine if kept under 3000rpm or 70mph.

Codes that have flagged over the last couple of months are

P0300 - Random misfire
P0301 - Misfire cylinder 1
P0303 - Misfire cylinder 3
P0304 - Misfire cylinder 4
P0306 - Misfire cylinder 6
P1642 - CAN failure
P0402 - Bank 1 CAT efficency below threhold
p1582 - Flight data recorder

More recently i just get the codes for cylinders 1 & 3

Any help would be greatly appreciated as im now pulling out whats left of my hair

Cheers

Daz

 

Welcome to the forum Daz,

Good to have you with us.
To get answers you will need to head on over to the tech X-Type - Jaguar Forums - Jaguar Enthusiasts Forum section and post all the details there for the guys to check out.
Try and take a look in the regional section also UK - Jaguar Forums - Jaguar Enthusiasts Forum
Enjoy the forum.

If you haven't already done so you should add your car details to your signature to help others to help you.

 

Hi, Thanks for the heads up, car added, and posted in the Tech forum

 

Welcome to the forum Daz,

I can see you've found the way to the X-Type tech section with your misfire issue.

Good luck and enjoy the forum.

Graham

 

Hey there and welcome aboard....... good to have you here with us here at Jaguarforums

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