Saint AAI

As title, are there any good jaguar specialists in north Nottinghamshire? My dads XJ diesel is having problems and he has scanned it with his code reader before taking to Jaguar. The engine light is on, but his reader shows nothing. They have had it a few days and keep swapping bits, but have not solved the problem and they are not sure what it is. They now want to change a turbo at a cost of £1100 + VAT + labour. That is for a recon on an exchange basis. I've searched and found an independent dealer that will sell a new one for that price with no exchange needed. The car has had 4 new turbos and is only 4 years old. Anyway he wants to take it somewhere that can diagnose his problem rather then just throw money at it.

bustaMOVEs

iTrader: (31)

What year is it?

RICHARD J

iTrader: (4)

Try Jagtech

ALi-B

iTrader: (1)

Generic code readers on Jags, like Fords and Land Rovers don't always give fault codes - even with a engine light on.

It seems Ford/JLR ignored OBD compliance and did their own thing. Which means if you use a aftermarket code reader, you may or may not get any relevent or sensical code. Centainly non-permanent (intermittant) faults will not show any codes,but will be logged in the ECU and readable via more specialised readers.

Now turbos!

VNT turbos, especially the Garrets with electronic VNT actuators are highly prone to failure and aftermarket units are dodgy.....therefore DO NOT BUY NON-GARRETT recons or remanufactured units.

The only exception is if the turbo has come via "BTN Turbos" (the only bonafide source I know of ) or brand new from a main dealer (which probably came via BNT anyway), then OK thats fine, but from elsewhere you are on dodgy ground and can very easily poor money down the drain.

If its the TDV6 engine then this is also fitted in Land Rovers and some Peugeots. Pig to work on due to lack of space in the engine bay, hence the high labour costs.

Can't really help with anything else, but assuming it a boost control induced limp home situation, one of my first diagnostic tasks after checking codes would be to use a smoke machine to test the inlet tract for leaks when under pressure.

Saint AAI

Thanks for the replies people. It's a late 08 so it's 5 years old not 4. I think the model number is a 350? The turbos do have electronic actuators. I'll pass on the info to my dad. I think part of the problem may be that my mum drives it the most. My dad has a company vehicle so my mum uses it to commute. She only works 5 miles from home though and drives like an old women. I've told them to give it a long run once a week and give it some beans.
This will be the 5th turbo and the car has only done around 50,000 miles.

ALi-B

iTrader: (1)

Personally if it were my car I'd be writing letters to Jaguar. Either their dealership is doing things wrong, or the car is wrong. And I think its unfair to be expected to constantly fork out on turbos. Even if the car is out of warranty and the replaced parts are older that 12months, its unfair to repeatedly have problems with the same components on a car that has supposed to have been "fixed" by their dealerships. Either they diagnosed the fault incorrectly, or there is a further underlying cause. For example if the Turbos shafts were siezing or wearing, then this would be a oil flow/return problem which would need to be fixed before a turbo was replaced (this probably isn't the case here, but this was a common example I've seen with Turbo failures on Ford/PSA's 1.6 diesels which had suffered neglected oil changes and poor quality oil, causing the oil feed and return lines to block up, as well as wrecking the tappets and camshafts).

The Garrett VNTs are unreliable. But not that unreliable. If they were, alot of the older Range Rover Sports would now be written off due to cost of repeatedly fixing them (body has to be removed from the chassis to gain access).

With that kind of usage I would be expecting DPF issues before the turbo played up, although repeated DPF regeneration can be quite hard on turbos as it does put alot of heat through them. Regular Italian tune-ups do help though.