If the car is outside of the VIN range then the reconfig would not have been done in warranty. Jaguar will not have a record. You might check to see if there are later bulletins for your VIN range???

I have no advise for you except to read through all the engine related TSBs on this forum for X350. The large file area should have them listed. I don't go there because I have what I need on my own computer. There should be newer ones that might help??

bob

 

I just tried to find TSBs for the X350 and could not. I thought they were in the stickys download area but????????????? I know I loaded hundreds to the mediafire account years ago.

Maybe they are trapped in some sort of cyber force field????

bob

 

Try here: JagRepair.com - Jaguar Repair Information Resource

 

I forgot Gus contacted me about posting all my TSBs on the site. He probably has them well organized!!!!!!

bob

 

Has anyone taken a car within range of the first TSB (starts with g00000 to g40000 roughly) for a re-flash recently? If a car got a refresh then battery was disconnected for a while, would it need a re-re-flash? In other words, would it revert to its first birthday and forget the newer programming? My car had its batt disconnected for a few hours and has not been right since. The slight pinging is only latest symptom.

 

It won't forget it.

 

Installing new catalytic converters solved my pinging issue...for the time being. We'll see if it comes back.

 

At a bmw dealer today, a svc advisor stated that if somebody complains of this they can read a code using the ignition key and determine if the timing is retarded all the way. If so, they recommend removal of intake manifold for de-carbonisation procedure. Has anyone tried to clean the carbon out of their intake plenums on a x350? Bmw dlr stated they use this to confirm if drivers are trying to cheat with lower octane fuel. 91 is the highest we ever see here in SE AZ. My car pings worse with shell than it does with QT or circle K. Hoping when the winter formula comes back in next few weeks, I will see if it changes. Right now it is super annoying and making me nervous when I detect it.

 

some cars suffer from carbon build up, some bimmers are well known for this. I have not seen anything of x350's suffering the same.
I had some light pinging some years ago - new plugs and changing the fuel filter helped a great deal, as did running some Techron through the tank, clean those injectors out and help the fuel pressure! easy fixes to try.

 

Old thread resurrected. My 2008 4.2L does this. Pinging under light acceleration, has done it since I have owned it for 3 years. Not sure if anyone has ever figured it out. Hopefully it won't damage anything? 91 octane is the best I can get in my area. Sound like a common problem lots of threads on this. Did anyone ever figure it out?

 

Could be bad coil(s).

Especially if it's worse under a bit more load e.g. going uphill? (Try not to be accelerating, you don't want to encourage gear changes.)

 

I had my ECM flash updated at the dealer years ago per the TSB, made no difference. At a later date I paid the dealer to diagnose the pinging, they said we hear it but nothing's wrong, recommended a top end cleaning (which I did not do). Have just lived with it over the years. Searched for vacuum leaks, had none. Fuel trims are all within 3% or less. I did replace the radiator recently, which made the most noticeable difference. From live data, the new rad is keeping the coolant temp a few degrees lower so it doesn't ping as much (was typically running 200-205 F, now stays 195-200). Almost zero pinging since that was changed.

I also know I have seeping valve stem seals on the RH engine bank, and I suspect that was the root cause from way back in 2010. Most likely one or two cylinders or valves on that side are carboned up from the oil burning, which is causing the light throttle pinging.

 

Interesting on the radiator that makes a lot of sense. My radiator has developed a very small seepage and will need replaced soon so that may be a double win. I also get some blue smoke on cold start ups every maybe 1 out of 20 times so that could also be part of the problem.

 

The occasional blue smoke at start up might just be some oil condensate that can build up in the PCV breather pipe which occasionally gets released into the manifold in a lump every now and again.

 

Blue smoke on startup is classic symptom of leaking valve stem seals. I have read on the forum that stem seals failing have happened on other 4.2Ls, but it's hit or miss (meaning not every engine suffers from this). I briefly looked into what would be involved to do the stem seals in-situ. It apparently can be done, of course the cam shafts have to come out. What stopped me was that I believe the timing cover would have to be removed. Then you're into the entire front of the engine and might be easier just to pull it.