I have a 2004 jaguar xj8 vdp my diagnostics port is not communicating and car wont start was driving fine engine started too vibrate sligthly and i parked try to turn onn later car would turn but no start i am guessing it could he a crankshaft sensor any help??

 

Hi Pancho,

Welcome to the Jaguar Forums! It's great to have you with us!

I have moved your post from the forum for the XJ40 to the forum for the X350, which is the Jaguar factory project code for your 2004 XJ8. Here you will find other members who are knowledgeable about your car.

My first question would be had you recently purchased fuel? The symptoms you describe can be caused by fuel contaminated with water. When the fuel is pumped into the tank, the water gets intermixed with the gasoline, but over time the water settles to the bottom of the fuel tank where it is sucked into the fuel pipes by the fuel pump.

Are you sure you had your scan tool connector fully seated on the data link connector? The position of the DLC can make it difficult to fully seat the scan tool cable.

Cheers,

Don

 

Well no i had got gasoline about a week ago it had about half a tank just started vibrating about last thursday it was running good just a sligth shake and check engine ligth after that just parked it and didnt drive and tried turning it onn sunday and it turns no start.And if so should i replace the fuel pump or what would you reccomend?

 

You really need to scan the diagnostic trouble codes to see if they will help narrow down the diagnosis. Check to be sure your scan tool connector is seating completely in the data link connector. Because of how the DLC is positioned, it can be difficult to get the scan tool's cable firmly seated. If you're sure you're firmly connected but still have no communication, check all your fuses. You can find the fuses associated with the DLC in the Electrical Guide, which you can download here:

Jaguar X350 Electrical Guide 2004

Once you are able to read the DTCs, post all of them here exactly as they appear and we'll try to help.

Cheers,

Don

 

Thanks will do and i had tried 3 dif scaners and nothing so i will check the fuses

 

It qas just spark plugs and i have another what brands are good or what website too order 2 back shocks

 

Believe i used Motorcraft in mine, but any well known, name brand, should suffice.

As for shocks, Arnott makes a decent shock.

R M T will rebuild your stock shocks, or sell you a set, with yours as a core, for a lot less.

Both options have worked out well for me.

 

Hi Pancho,

I highly recommend that you use only the original equipment spark plugs. If you have the 3.0L V6, then a Motorcraft/Autolite plug is correct, but you probably have the 4.2L V8, so the correct plug is NGK Laser Iridium IFR510 / 7866, available from Rock Auto for $8.27 each plus tax and shipping. These plugs have the correct resistance, temperature range, spark energy and life expectancy upon which the Jaguar engineers based the engine design and performance. Using any other plug may compromise your engine's performance.

Cheers,

Don

 

I found some on amazon for 700$ for both rear from a brand named SCITOO idk if you recommenf this

 

my jag difficult too start after sitting in the car while engine off and listening too radio for ex 20mins when i try turning it onn is hard too turn onn sometime i have too floor the pedal too start it and sometimes it starts but engine shakes only happens when i sit and listeb too the radio on the car and the car is off any help?what can cause this

 

How old is your battery?