Repair of the airbox and replacing MAF sensor seem to have solved the problem. Drove on a 250 mile trip at various speeds and no faults. Trims are moving toward 0. I'm off to repair the the sunroof cassette on my BMW 528i. Merry Christmas to all and to all a good night.

 

I will give the fuel trims trims by tomorrow , I beat they will e a bit high.
Thank you jag V8.

 

Go for it! Hopefully it's now fixed but they'll show if not.

 

I'm back from a trip to Florida and back. No codes or ECL. Over 1000 miles plus. Until the next time, this thread is closed for me.

 

Emil and restrict performance back again, fuel trims high over 10. Can not find reason why ??? As I said we have done a smoke test, check engine breather valve, changed Maf, etc,,,, it is seems like there is a hissing noise , something like too much air goes in to engine , is there any other valve inside somewhere that may doesn't work properly ????

 

Do the trims drop when you rev to 2500?

 

Happy new year to all of you !!!!!!!

 

MAF sensor ended up fixing mine. Check the O ring seal on it.

 

Check and report on trims instead of changing any parts. Far cheaper.

 

Eml and restrict perform back again, after all testing made snake test, maf replacement , etc I may think only thing left can be EGR or can it be anything else ?please advise as this annoying

 

Please read and take heed of previous advice.

 

And i can say the "new" issue coming up on the 4.2 v8s with plastic and aluminum intakes. Where the plastic joints the lower injection manifold they leak and leak bad. The orings are not avail seperatly and a new intake is $1200+. Ive worked on taking apart and sealing with rtv and has not responded as i would have liked. The second one is back a day later. Resealed and try again. Maybe one of you industrious owners can source these orings...

 

Are you talking about this seal?

Link Jaguar Air Intake Manifold to Adapter Plate Upper Gasket Reseal Kit 2004 2009 | eBay

 

Great find! Sure looks like the right ones.
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Yes thats them gus, and ive now ordered some rover ones as they look the same in the catalog. Why rover supplies and jaguar doesnt......???

 

And this guy euromark is here in houston, and going through our business accounts he is the business that buys all the rover seals we can get and then marks them up over list and resells on ebay. Soooo long story short, you can probobly get them cheaper from a rover dealer. Ps i also see him selling arnot shocks a couple hundred over thier cost. Man maybe i need to just be a ebay seller and quit here.

 

Can it be the EGR causing the lean bank 1 and 2 ? Please reply
Thanks

 

What about actual OBD values instead of expensive guesswork?

 

High fuel trims, smoke test was done , air leak is not present, maf sensor swaped from another jag, so it is not that one , air box checked and all ok, that
is why I presume egr valve can give lean bank 1 and 2
Please help!

 

Use diagnostics better.