Hi all im new to this club and have just bought a 1999 Jaguar XJR 4.0 but am concerned I have been sold a lemon! It has 77000 miles on it which i thought to be a good sign. This was backed up by the old MOT's on the DVLA website. The test drive went well, very smooth and powerful with the slight supercharger whine. So i Parted with a very large chunk of my savings and bought it. 

However less than 10 miles down the road we were passing through a village when the car went into limp mode. My father was driving and i was following in our car. We tried stopping and restarting but no change. A little way down the road as he accelerated away from a roundabout at the bottom of a hill there was a great cloud of blue smoke! This was panic time and i called the seller who denied everything and any responsibility, saying we had broken it and it was our problem. 

So we drove it the 200 miles back home not being able to do anything else. It was running very smoothly on the way back but still in limp mode. Occasionally i noticed a puff of blue smoke when accelerating after a decent. Does anybody have any suggestions as to what to look for or what to do? Any help would be greatly appreciated.

Thanks

Threaten the garage owner with court proceedings. Also get an estimate for the repairs. If he doesn't offer to put it right then take him to the small claims court.

https://www.gov.uk/make-court-claim-for-money/overview

You should have driven it straight back to the garage.

hi

only way to know is get it plugged in and see what fault codes come up

the blue smoke is a worry though, which is usually caused by burning oil

but could be a egr problem, but its only guesswork

you really need to get the fault codes read

if you bought it from a garage, I'm sure your covered for the first 3 months, if its private, then its usually the buyers responsibility to check the car

cheers

Joe

Thanks for your replies. Unfortunately it was bought privately so it looks like i will have to sort out the problems myself. I should have checked it over more thoroughly. I will look into the egr valve though. 

I have found out that the limp mode was caused by the maf sensor plug shaking loose. Pretty sure the blue smoke wont be sorted as easily though!

I found a broken breather hose on the top of the engine. I have now replaced this and so far have not seen any blue smoke. Thanks for your help and suggestions!