Jaguar XK8 project #38, the dreaded 'restricted performance' fault, rough running issues, fixed! 

I had this problem on my Jaguar. The garage charged me 800 usd to change the coils. I bought them for 144 dollars a s8 on EBAY and it took me 1 hour to replace them. I was also charged 600 dollars to change the water pump. I bought it on the internet for 33 dollars. I changed it in an hour. Do it yourself!!!

We had restricted performance come up on our XKR that turned out to be a dud coil pack on number 3. We replaced just the number 3 coil pack & all was well until a couple of weeks later when the restricted performance came back. No mucking about this time; we replaced all the coil packs & plugs as they were all the same age as the number 3 coil pack & we anticipated they would all start playing up in due course. No further problems since doing the coil packs & plugs.

Simon, always loved your channel...Big thanks for this latest one. My XKR had the same thing last week and its been a bit overwhelming on where to start, but after watching your vid, you have eased my stress brilliantly 😊 and I will do the same thing. Thanks again😉👍

Great video Simon, fingers crossed all is sorted 👍

Here's an idea for you and all the diy guys out there, find a cup cake baking pan with 6-12 slots, use that to keep the nuts and bolts in, it will help everything tidy and not rolling everywhere, also to organize/group them together, it will make it easier for you.

I picked mine up from the South Coast to Solihull and within a few miles the same thing happened. That said it was reaching speed limit (ho hum), but wouldn't go over 3000 revs. Mine was No7 cylinder. I bought a couple more as spares as I think mine were the original ones as well. Touchbwood, no problems since. In got side swipped parked outside my Dad's a couple of weeks ago and they took the wing mirror off. That was a nice little bill!!!

hi simon..and happy easter, i had the same problem 3 years ago. also on number 3 .

Well done my Son.xx❤

I bought last year 2 jaguar XJR V8 year 2000 and 2003 van den place. The first one had 58,000 miles, some corrosion. I did the bodywork myself. I'm sure they would have charged me a minimum of 2500 dollars just to change the metal. I paid 2000 us for the paint but I should have done it myself. I lifted the carpet, I cut the rotten tiles. I bought a $250 soldering set and some homedepot blocks. I worked on the car for a month, 2 hours a day. You can't see anything now. And I'm not a pro. I'm gradually redoing what has to be done. I changed the shocks and brake calipers myself. The car of the year 2000 is almost finished. For the 2003 car, I'm changing the engine and transmission, at a cost of $2500 for the 2 parts and $1300 for labor. The car was bought in Florida for $1,200, with not a square centimetre of rust. The bodywork is impeccable. I need to revise the interior because a pig drove it before me. This moron used to throw cigarette butts on the floor. I used naphthalene balls to get rid of the smell. In a month, it should be ready. In France, I've had 5 Jaguars, including 2 V12s and 2 Xjs, and they were much better than the Mercedes. Americans don't know about these wonderful cars! I drove the Jaguar V12 in France at 250 kms/h on the freeway.

Great video. Also noticed your strut mount top is on the way out :-)

Restricted performance? Change the COILS!

The ignition coil was burned by a short circuit. A little tip from me: please use a brass brush for cleaning. The spark plugs. And carefully clean the air mass meter sensor mit cotton swab.before installation.😅

Is that tool set a Blue Point kit?

mass air flow had mine replaced.. o2 sensor fuel filter purge valve

Your battery is ruined.