Hi I have jaguar 2000 xj V8 3.2. When I press the accelerator there is a rattle in the engine. It's ok when idling and seems to be ok. Also the restrictive mode light has come on the dash. When you press the accelerator it miss fires. Any help would be appreciated.

 

Hi I have jaguar 2000 xj V8 3.2. When I press the accelerator there is a rattle in the engine. It's ok when idling and seems to be ok. Also the restrictive mode light has come on the dash. When you press the accelerator it miss fires. Any help would be appreciated.

 

Reading the stored codes would probably give an indication of the problem. Too many possibilities without more information.

 

Welcome to the forum Terry,

I've merged your two identical threads.

The first step in troubleshooting is to check for stored or pending the error codes. Without that as guidance, it's speculation and guesswork. Don't ignore misfiring - it can easily damage the cats.

When you get a minute, please follow this link New Member Area - Intro a MUST - Jaguar Forums - Jaguar Enthusiasts Forum to the New Member Area - Intro a MUST forum and post some information about yourself and your vehicle for all members to see. In return you'll get a proper welcome and some useful advice about posting to the forum.

Graham

 

The rattle doesn't sound good - I would NOT drive the car until further investigation, it sounds like a timing chain tensioner problem, and without trying to cause alarm, this can be death of an engine.
It's common with your model year car if the timing chain tensioners and guides are not updated. Original fit were made of plastic and fail leading to skipped cams and valves meeting pistons.

First thing is remove the the timing covers, removal is simple and not a big long job. Then you can see what is going on, and it's obvious if there is an issue once the covers are out the way.

An OBD reader will likely report the misfires, not a fault on the timing chains.

Replacement timing upgrade kits are easily available around 300 Euro - the timing cover gaskets will also require replacement.

There are some very good guides on how to replace the bits on this forum, if you don't plan on doing it yourself then you can always point the tech that will do the work to this forum for assistance.