20 Most Recent 2007 Jaguar XK8 4.2 Questions & Answers

it sounds like the lift mechanism/regulator has worn out or siezed and needs replacing

Jaguar XK8 Cars... | Answered on Jan 24, 2018

Take a look at this video:

Jaguar XK8 Cars... | Answered on Nov 29, 2017

Having a restoration shop and running several newer Jaguars I have seen similar situations. Intermittent multiple errors such as these can be caused by a low battery (or corroded connections) that "fool the computers". Also had a '99 XJ8 VDP have exactly the same issues over several months. Issue was a manufacturing fault in the sensors on the throttle body that caused the "limp home" mode - usually in stop and go traffic. Jaguar had an inspection and recall on the throttle bodies but that vehicle had gone through 3 different Jaguar dealers for service and none looked at TSB/Recall or performed the necessary checks on the throttle body. Tried cleaning the throttle several times (per Jaguar TSBs) but no change. Had to replace throttle body & problem solved (over 30,000 miles since then). Recommend making sure all air connections to throttle are clean and open and cleaning the throttle area to see if that helps.

On newer Jaguars (and other Al bodied cars) similar problems occur when the "ground" connections to the body become poor (usually through corrosion but sometimes through collisions). Connections may look perfectly normal but have high resistance. Careful when working with the connections - the posts are usually very loosely fastened to the bodies. Good luck.

Jaguar XK8 Cars... | Answered on Sep 10, 2017

The light will go off only when the fault in the ABS system has been repaired.

Jaguar XK8 Cars... | Answered on Jun 18, 2017

you may try adding a engine oil flush follow the instructions on the container if the lifter is blocked that may help but that engine at that model/year suffered with worn nicosyl coated liners which made the engine poor starting/noisy unless it has been reworked with cast liners

Jaguar XK8 Cars... | Answered on May 12, 2017

Is it the PSI specs good {30PSI?} If not u have to start w checking 4 vacuum leaks, oxygen sensors, get emissions test to get all other emissions read (HC, NOX, CO) All the readings will give the tech a path. U have to have the right amt of fuel going into the pump & regulator to get the right PSI too. Clogged exhaust? The possibilities go on. Good Luck

Jaguar XK8 Cars... | Answered on Mar 25, 2017

the electronic part of the unit ie. module is seperate from the pump unit and can be interchanged someone may have put a module from a different unit on to your pump motor unit ie, from a xkr which as a differant connector

Jaguar XK8 Cars... | Answered on Mar 12, 2017

Could at either plug(corrosion) Most wires break close to the plug, Check voltage a couple inches back. Unplug it(if you haven't already) check it. If you have voltage at the brake switch and a couple inches back(probe the wire) nothing at the Shifter solenoid. I would run a new wire to it. Way easier than removing the console and dash to find the short. If you have other problem, I would be looking at the fuse panel .

Jaguar XK8 Cars... | Answered on Jun 28, 2016

Possible bad wire in motor so it opens up and stops motor after heating.

Jaguar XK8 Cars... | Answered on Feb 15, 2016

goggle jaguar error codes gives a full list and an explanation

Jaguar XK8 Cars... | Answered on Sep 08, 2015

Welcome to Fixya

The car might be stucked in Valet mode. Use the black key that you have to open the trunk, it overrides the Valet Mode. The key goes in a hole that is between the X and the K on the emblem on the rear of the car.

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Jaguar XK8 Cars... | Answered on Sep 03, 2015

I strongly recommend a repair manual if you DIY. Auto parts store may cary or try filepeep.com or manualslib.com

Jaguar XK8 Cars... | Answered on Mar 21, 2015

You've done most of the steps I would have so far... Now use a meter and trace the wires backward. Sounds like a broken or chewed up wire along the route backwards. Also try a separate wire with power to see if you can deliver power to those lights. If they work, albeit temporary for the test, you grounds are good. If one works and the other does not, then THAT ONE has a ground loss. In any case, you have it narrowed down, and I would hope that by now you may have your answer. Let us know so we can share our knowledge with other readers. Thank you!

Jaguar XK8 Cars... | Answered on Jan 03, 2015

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