20 Most Recent 1988 Jaguar XJ6 - Page 9 Questions & Answers

Obviously, the pump is not receiving any power and your rube goldberg is not doing the trick. Get a hold of a schematic and you will do the job right. In the meantime just hookup a wire from the battery plus terminal to the pump plus terminal with a on/off switch so you can turn the pump on and off manually.

the illumination for gear selector is a fibre optic system the bulb located under the centre console

does the check engine light go off after a few seconds of swiching on without cranking engine?if so i suspect your car is a X300 model if so a common cause of this is a corroded/open circuit wire in or around one of the connectors under bonnet/hood at rhf around or below the washer bottle filler behind headlamp i think it was yellow/white wire in a white connector. its the ok to start signal coming from the security and locking module which is under the boot/trunk fuse box which can fail also if you get a wring diagriam for engine managment system that would make the job a lot easier i gave mine away when i retired otherwise i could have emailed the relevant part good luck

All I can offer is a picture of the part.

SINCERE Apologies for the SPAM answer you got from jamessizer... (a book peddler). No serious mechanic is EVER going to tell you a "NORMAL" compression (nor should they). As a well running engine runs through it's possible LIFE-CYCLE... It is highly probable the cylinder compression can decrease significantly (harmlessly... smooth as silk). The ONLY reason to troubleshoot with a COMPRESSION GUAGE is to detect engine imbalance (like a dead cylinder)... looking for burnt / cracked piston, burnt valves etcetera... If the compressions are similar... no MECHANICAL conclusions should be drawn from any specific pressures... Hope this helps your understanding... especially of Jaguar Engines. Factory manuals for my Jags were quite expensive... but also very informative... and there are some serious ENTHUSIASTs volunteering here if you care to elabortate on what issues you are having...

Check code first.

Could be for many reasons , but you need to check electricals for the sensor and make sure that there is no open circuit. If electric is good , then your problem is with the sensor itself , probably need changing

Check speaker connections. If still no sound chexk speakers with either a ohm meter or in a pinch you can quicky and carefully touch the speaker wires to a 1.5 volt battery (AA or AAA) you should get a popping sound.if the speakers are fine and the stereo is not on mute then the internal amplifier has gone out

Low Battery

Clean How?On a vehicle that old, you remove the injectors& mail them to a place that ultrasonically cleans themThat is about $45.00 eachThere is no fuel line cleaningYou could have them cleaned on the car with theinjector cleaner that is put in a container & pressurizedto at or 5 lbs above rail pressure,the pump fuse removed& run off that mixtureDon't know what that costs. Say $100.00 or less

Fuel Pump Relay

Located under passenger's dash panel on yellow connector block.

please see the other post for detail