Hi! My friend has got a Jaguar xj6 1997 with a 3.2Litre engine and automatic transmission. It doesnt start. Went to work,worked just fine. Dead later on the same day. Battery ok. Tried jerking the gear stick...Nothing. Checked the Inertia switch...ok. Checked for power at fuse to fuel pump relay and main ecu fuse...ok. Did a "hot wireing" to the starter by the white cable on the back of the valve cover....ok,did crank the engine,so solenoid and starter is ok.. Tried the "unlock-with-key-and-lock-with-key-hold-until-larm-activates-and-then-unlock-and-start-trick"....didnt work. Tried both keys. Heard about some wrong with starter connection problems? Grounding or positive connection? Any suggestions? Thanks! Anders

How long since you replaced your Coil on plugs(COPs) and the spark plugs? On Lincoln LS with Jaguar engines,they interrupt PCM signals to throttle,transmission,etc. Just a thought. don-ohio

Jaguar wont rev 3000 rpm Questions & Answers - Fixya

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1998 Jaguar XJ8 won't rev over 3000 rpm ... Wont go beyong 3000 Revs s type 2001, wont go beyond 3000 Revs and it' in limp ... Question about 2002 X-Type ... My jaguar xjr8 year 2000 battery went dead started car went for short drive back ...

Jaguar engine cuts 3000 rpm Questions & Answers - Fixya

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1998 Jaguar XJ8 won't rev over 3000 rpm ... engine cuts out and shudders at 3000 rpm won't accelerateobd code p0332 2002 jaguar x type 3.0 l P0332 - Knock ... Car is boging out in park and will not go over ... driving, don't worry about it.

Rev Won't go up

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Neutral gear? Standard transmission or Automatic? If automatic
car may be smart enough to shut down. If Standard transmission
you may have a clutch safety start switch wire loose or bad switch.

Sounds like when the battery went dead, there was still a little power left in it, and when starting was attempted, it went completely dead. This causes the computer to automatically shut down to prevent damage to it. Starting it afterwards may require allowing it to run until it reaches operating temp (when temp gauge is in center), and then restarting one or two times. If this doesn't work, you will need a scan tool to reset pcm.

P1512 Throttle Position Sensor Idle Switch Sense Circuit

P1513 Throttle Position Sensor Idle Switch Sense Circuit

P1514 Park/Neutral Position Switch High Load Neutral/Drive

P1516 Gear Change Park/Neutral Malfunction

P1517 Engine Cranking Park/Neutral Malfunction

P1607 MIL Output Circuit

P1608 Automatic Transmission

P1609 Internal ECM Error

P1641 Fuel Pump Relay No. 1

P1646 Fuel Pump Relay No. 2

P1739 Automatic Transmission

P1775 Transmission Control Module MIL Circuit

P1776 Torque Reduction Request Signal

P1777 Torque Reduction Circuit

P1780 Automatic Transmission

P1781 Automatic Transmission

P1782 Automatic Transmission

P1783 Automatic Transmission

P1785 Automatic Transmission

P1790 Automatic Transmission

P1791 Automatic Transmission

P1792 Automatic Transmission

P1794 Automatic Transmission
P1796 Automatic Transmission
as you can no such code exists for a jaguar ,contact code reader manufacturer

you have vapor lock...try a fuel stabilizer...that should fix it

i had a 95 xj 6 with the same problem. At the fire wall on the right side is a bolt with a rubber cover on it. this cable goes behind the engine to the starter. That bolt at the fire wall my need to be replaced. find it it may be rusted or corroded. If it is, the current from the battery will stop at that bolt and not contunue on to the starter but lights and everything else will work. If when you turn the key you just hear a click or nothing. that part is 5 dollars at autozone.

try rocking vehicle foward and backward the park pin may have not engaged.

dear friend-the fact that your vehcl does not pick up speed tells me that it is slipping,there is a pressure lost in the gear box,you have to remove and rebuild as the clutches will be burnt.

Hi Tracy.
Yes its a new one to me too !
I presume its an automatic model ?
Possibly the gear selection inhibitor switch is at fault, due to water ingress ?
Have you tried starting in neutral ?
Do you hear any clicking from the engine starter at all, when you turn the key ?
If you do, then suspect the starter motor at fault.
I see you posted this on Dec the 6th, so expect you have located the problem by now, if not hope I have been of some help.
Best Wishes !
John.