Why does my 1996 Jaguar XJS not start?
Hi , I have a 1996 4.0 XJS, out of the blue it refuses to start, a good mechanic friend has checked for fuel and spark, all present but still not starting. Could it be the alarm system or is there another common fault that causes this, really appreciate some info/advice. I guess it will crank as you say you have spark?
What to do when your Jaguar says no start?
If it’s bad enough to create a “no start” you’ll see obvious burning and/or disintegration of the contact. 3) If you don’t have spark at the coil wire-to-distributor cap, then check for power getting to the ignition coil. Power here comes directly from the ignition switch via a white wire.
How to troubleshoot the fuel pump on a Jaguar?
Remove the relay plug-in socket and determine which terminal cavity corresponds to the white/green wire. This wire goes right to the fuel pump. Using your jumper wire apply 12 volts to this wire for just a moment (you are bypassing the somewhat tricky control portion of this circuit).
What was the XJ8 driver’s door window problem?
1998 XJ8 driver’s door window problem…window stayed up. Was told i needed a new module. Disconnecting the battery worked but only for about 6 window operations. Fixed everything by removing the door module, cleaning up the terminals with a soft brass brush and applying contact cleaner before re-assembling.
What to do if your Jaguar XJ6 won’t start?
If your XJ6 or XJ12 won’t start, grab your voltmeter and follow this checklist. Covers checking spark plugs, coil, wires and distributor cap, ballast resistor, amplifier and distributor pick-up, fuel supply, fuel pump and relay, air flow meter, fuel injectors and ECU.
What do you need to know about starting a Jaguar?
The first thing you need to do is be sure that you have what is necessary for the car to start. 1. Check that you have a fully charged battery and that you have power to all fuse panels. 2. Be sure that you have fuel pressure. 3. Check that you have spark. This all seems easy until you get involved in doing it.
What to do if your Jaguar has no spark?
If no spark, see step 3. If you DO have spark here then you have a faulty cap and/or rotor (spark is getting to the distributor cap but not getting to the sparkplugs). Remove the distributor cap and peek inside. Look for a burned center terminal, burned terminals to the plugs, cracks, or carbon tracks between the terminals.
What happens when you turn off the ignition on a Jaguar?
When activated, it de-energizes the ignition relays in the engine compartment, driver’s side fascia and trunk fuse boxes. It also removes ground inputs from the BPM and windshield wiper stalk switch. This stops the engine and fuel pump, unlocks any locked door, and de-energizes unnecessary electrical systems.
How can I tell if my Jaguar XJ6 is immobilised?
To find out if a car is immobilised, perform this check. Turn ignition on but do not crank the engine. Observe the orange ‘check engine’ light in the bottom left corner of the instrument pod. If that light goes out, the car is immobilsed, at least by the starter not cranking the engine if you try to start it.
Can a flat battery cause a Jaguar X300 to not start?
The immobiliser system is quite seperate to the key fob operated alarm system. Flat batteries in the key fob cannot result in loss of chip registration over minutes, days or weeks as the memory of the unique key / chip code is held within the security module.
How to troubleshoot no start troubleshooting, series?
If you have a ballast resistor, the wire will go there first. If no resistor, this wire will go directly to the “+” post of the coil. Remove the white wire and, using the test light, check for 12 volts with the key on. If you have voltage, see step 4. If no voltage, you have an open circuit.
How to start a fuel pump in a Jaguar?
10) Remove the air duct from the front of the Air Flow Meter (AFM). With the key “on”, move the air flap which is inside the housing of the AFM. This movement closes a switch inside the AFM and powers up the fuel pump circuit. You should get fuel in your container or a 34 PSI reading on your gauge.
When did the Jaguar XJ S come out?
The Jaguar XJ-S was built from 1975-96 and was the most affordable mass-produced V-12 sports car ever built. But owners constantly balanced enjoyment and aggravation, which has depressed prices to bargain levels. Stiffer emissions and safety regulations demanded a new kind of Jaguar sports car in the 1970s.
What kind of engine does a Jaguar XJS have?
In August 1997, Jaguar issued an amended technical bulletin 17-9 for 1993-94 model year Jaguar XJS vehicles with 4.0-litre petrol engines. In these vehicles, the operation of the AIR pump clutch was controlled by a relay located in the engine compartment.
What causes a Jaguar XJ engine to stall?
In November 1994, Jaguar issued technical bulletin 44-23for Jaguar XJS vehicles with 4.0-litre AJ16 engines. In these vehicles, the engine may stall when the transmission is shifted to Reverse or Drive from Park; stalling was most likely to occur when the engine was cold.
What is the problem code on a Jaguar XJS?
In these vehicles, the ‘check engine’ malfunction indicator light may illuminate and diagnostic trouble codes (DTCs) FF44 and/or FF45 may be stored. According to the technical bulletin, these DTCs show an inconsistent reading from the heated oxygen sensors (HO2S) due to a slight degradation of the engine to body ground straps.
The Jaguar XJ-S was built from 1975-96 and was the most affordable mass-produced V-12 sports car ever built. But owners constantly balanced enjoyment and aggravation, which has depressed prices to bargain levels. Stiffer emissions and safety regulations demanded a new kind of Jaguar sports car in the 1970s.