I have a sound coming from the '95 X300 engine, it is a metal rubbing sound. I used to have an '87 XJ6 SER. 3 with the same sound and it was the "flex plate". This time it happens going up hills and when the A/C is on, can this be the same culprit even though the a/c is on?


THX

mcart5

 

I dont see the conenction with teh a/c either.

Common issues with the AJ16 engine is the front crank pulley/damper delaminating.

BUT

That is usually preceded by a loudish squealing sound when cold. Once its delaminated, then horrid clanging and banging will drive ya nuts.

Remove the a/c belt, start the engine, note the change etc of said noise. The a/c idler pulley is OLD now, and should have been replaced as a matter of service with a belt change loooooong ago, probably a belt only was done as a short cut.

Dreaded timing chain rattle at 1500 ish RPM, may be present also.

 

While you're in the neighborhood, mark your damper so you'll know when/if it starts delaminating. A/C idler pulley can be had for $10-$20 vice the $60+ for the OEM Jag version.....unless you are partial to the weight savings and just "Gotta have PLASTIC" in which case there is likely a more cost-effective replacement if you search the local auto-parts inventory. I'll find my thread and and edit in a link that gives the part number of the steel one.

Gates 38006: https://www.jaguarforums.com/forum/x...lt-how-102387/

 

Thanks for the replies. You maybe be right it is two separate things, the flex plate and the front crank pulley. Last year I had all the timing chains and seals replaced and did a valve job as well. I also replaced all the belts, but did not notice any problem with the pulley. The sound is very similar to metal hitting with metal in which I posted, that it sounds like the ring gear (flex plate). One problem is getting a new flex plate, I have seen one for 600 USD and scrap yard ones (which would be problematic at best), any suppliers who sell this would be welcome.

mcart5