Top 20 1990 Jaguar Vanden Plas Questions & Answers

hi check to see of it has spark to the spark plugs if not that's a possibility if theirs spark you have eliminated that check the fuel if no fuel that's a possibility if you have fuel you have eliminated fuel injectors if spark and fuel is ok check these 2 first cheers

Pop off the garage door opener cover and turn the motor with a screwdriver

the diagnostics plugs are in the boot behind the carpet trim but i have no idea how to perform this task .you may be able to earth a pin which clears the memory but to be sure you will need a dealer type jag mechanic who would know what pin ?

Has the battery died or gone flat ?

fuse, brake lights are most likely tied into same fuse as radio.

I think you need the dealer to look at this.

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That is the indicator for a blown fuse, check the fuse panels on the lower "A" pillars (by where your feet go). One of them is blown.

Hi,
Please follow the below: Front Brakes. 1. Ensure vehicle is on level surface. 2. Relieve antilock brake system, by pumping brake about 20 times until it becomes difficult to press. 3.Be sure fluid level is 2mm below filler neck. 4. Bleed R/H caliper first. Do the same to the L/H caliper.
Do the same as front brakes for the rear brake but only up to number 3 then do the following. 1. Release one bleeding nipple on the rear. 2. Depress brake pedal and hold. 3. Turn key to on position then wait 15 - 20 seconds for air to bleed out of brake system. 4. Retighten bleed nipple, and release pedal slowly.
Switch ignition of and then bleed the remaining rear caliper as the same procedure as the previous caliper.
If you need more information, let me know.
Thanks
Jason

Remove the interior trunk liners, the tank is located behind the back particle board, behind where your spare is mounted and battery. Take all of that out. There are two black tank straps that hold the tank in position. Remove bolts to lossen. Take care around where the filler neck attaches to the body (left rear next to trunk). You will have to disconnect serveral harnesses also to "work" it back and forth and ultimately slide it out. As a former master jaguar tech, I will say this; if you are not trained, I suggest you let a professional do this job for you. Gas tanks are no joke.

Whatever you decide, good luck.

Note if you remove the fuel tank sending units, be sure to use a brass punch while loosing the rings. If you don't, the tank can explode or at least catch fire.

sounds like low fuel pressure likely the fuel pump or fuel pressure regaultor

check fluid level. If you have a float in your master cylinder, it will turn the light on when the fluid moves during driving.

THAT WOULD BE THE "PURGE CONTROL VALVE CIRCUIT". IT HAS TO DO WITH EMISSIONS. THE PURGE CONTROL VALVE ALLOWS VAPORS FROM THE FUEL TANK TO BE BURNED, BUT IN THIS CASE IT HAS MALFUNCTIONED. HOPE THIS HELPS. KEEP ME INFORMED. THANKS FOR USING FIX-YA AND THANK YOU IN ADVANCE FOR AN HONEST RATING. BEST OF LUCK.

How long has it been since your vehicle has been serviced or has had a complete engine tune up? A spark plug or plug wire being fouled could cause poor engine performance without your vehicle smoking. Also a degraded quality of fuel generally one that has moisture (water) in it could cause the vehicle to operate poorly and I would suggest using something like heet fuel additive and a good fuel system treatment about every 2 to 3k miles or with every oil change to help your vehicles fuel system and engine to stay clean and function efficiently. I would try these simple steps first before going further. Hope this helps

There is a short or an open in the egr solenoid circuit, have it checked before you replace it, if there is a short somewhere a new one won't solve the problem.

The driver side has a lock out button on the master switch on the driver door.
On mine, I had to remove the master switch, about 2 hours, cleaned the contacts and it worked all windows easily. A lot of work but the replacement switches are very expensive..The other possibility is simply corroded connections as a lot of water gets into the doors......almost the same solution but each door needs to have the door panel taken off.....

P1000 Jaguar Code - On Board Diagnostic System Readiness Test Not Complete link to info copy and paste https://www.engine-codes.com/p1000_jaguar.html

1. Park your car on a level surface, facing a flat wall or garage door. Make sure the car is at a normal operating temperature and that the headlights are turned on.
2. Open the hood and locate the headlamp adjustment screws. These are usually located at the back of the headlamp assembly, near the firewall. There should be one screw that adjusts the vertical aim and another that adjusts the horizontal aim.
3. Use a Phillips head screwdriver to adjust the screws. Turning the vertical screw clockwise will lower the beam, while turning it counterclockwise will raise the beam. Turning the horizontal screw clockwise will move the beam to the right, while turning it counterclockwise will move the beam to the left.
4. Adjust the headlamps one at a time. Cover one of the headlamps with a thick cloth or cardboard to prevent any stray light from affecting your vision while you adjust the other headlamp.
5. Aim the headlamps so that the center of the beam is at the same height as the center of the headlamp lens. The horizontal aim should be straight ahead, with no visible lean to either side.
6. Test the headlamps on a dark road to make sure they are properly aimed. If you notice any unevenness or misalignment, make further adjustments as necessary.
7. Close the hood and enjoy your properly adjusted headlamps.

It's important to note that if you're not comfortable working with car electronics, or if you're unsure about any of the steps involved in adjusting your headlamps, it's best to consult a professional mechanic or authorized Jaguar dealership for assistance.

If you remove any gear that is coupling it to the motor you should be able to slide it back to where you want. I would put gear back just to hold it in place and keep it from moving. But you do have to replace that gearbox for future operation.

Hello You need to remove the fuel tank and clean it well so that you make sure that there are no water left in the tank