20 Most Recent 2001 Jaguar S-Type - Page 7 Questions & Answers

On the 2001 jaguar under the hood in that fuse box the no. 4 fuse is to the horn relay it is a blue 15 amp fuse if this is not the one inside parssenger comp. the no. 28 fuse is to the security system horn relay hope this will help you on my 2001 fuse box is on passenger side

There is a fuel pressure regulator in the fuel manifold that sets the maximum pressure in the fuel manifold . It can be controlled by a vacuum line or be pre-set. Combined with a pressure sensor in the line that stops the pump operation when the pressure is reached.

Check to see if there is a broken/bare wire on your horn circuit. That would explain the battery drain and the horn not working if there is a short.

Check if your transmission really is in park. I once had the same problem and it was fixed by moving the stick in and out of the park stand for a couple of times. Then the red light illuminating the "P" came on and i could start again.

Has to do with the transmission cable that tends to get a bit loose.

MOST TIME LIMP MODE MEAN ECM FAILING IF YOU CANT ERASE OLD CODE AND REPROGRAM ECM. AND IT CANT RELEARN NEW PART ECM HAS A MEMORY FAULT.

contact the jaguar car clubs for information on this car as the enthusiasts will be in the know

I got similar problem on a 1998 XJ8 a few weeks ago. It turn out to be a dead auxiliary coolant pump. This is an electric pump that help pumping the hot coolant into the heater core when the engine is at low revs. The main engine coolant pump is not sufficient to provide enough coolant throughput to the heating system on some cars, so a auxiliary electric pump is required. If this is your problem, you might still get a little hot air when driving at high speed. If this is your problem and are a do-it-yourself, you can even save the price of a new pump by just replacing the auxiliary pump carbon brushes. They are most likely completely worned after 13 years of service. My brushes have a 4x4mm section, yours might be different. If you do not find exact size, carbon brushes can be cut and/or sanded to size.

if it wont open with the key that is a problem..usually those are mechanical locks..it may require removal of the back seat to inspect for a broken lock..

I have a 2001 Jaguar xj8L and I have to replace the thermostat . Do I just take out the three bolts from the front , pull out the thermostat and place it back in the same way the old one came out and then put back the three bolts?

I had the same problem with two of my cars (Chrysler Town & Country minivan & Ford F150 Pickup Truck). Instead of using 87 fuel I used 91 fuel and bingo the noise is gone.

could have poor ground wire use 12 volt test light check probe socket positive wire could be grey green wires and touch ground if test light works you have bad ground to license plate lights.and license plates lights have fuse control circuit.

most engine check lights are reset by using the fault code reader.

find it, replace the broken hose or snapped plastic ***, or intake manifold gasket or carby/throttle body gasket or whatever it is that's leaking