Exhaust gas recirculation valve fault
fault code 16 is: Air thermistor. Looks for signal less than 0.1 or more than 4.9 volts
The fault code FF77 typically indicates a fault with the ABS hydraulic unit or the ABS control module in a 1994 Jaguar XJS. It is recommended to have the ABS system diagnosed and repaired by a qualified technician to ensure the system is functioning properly.
does the light illuminate during start up? If not the lamp is burned out. If it does, then the engine computer is likely at fault.
1-Disconect Battery for a few minutes 2- Reconnect Battery 3- Turn key to on position 4- Let computer check your engine 5- Start your engine
The computer has detected a fault with one of the electronic components and is warning you to run a diagnostic test.
First step is to have it checked for trouble codes. If the check engine light is on, the pcm has detected a fault and set a code.
Fuel Fault code 89 translates to "Purge valve circuit. Looks at voltage across purge valve winding to detect open or short circuit."
Code 41 Throttle position circuit fault
On a 1994 Jaguar XJS, the oil pump is located in the engine's lower section, typically mounted on the front of the engine block. It is driven by the crankshaft and can be accessed by removing the oil pan. For maintenance or replacement, it's advisable to consult the service manual for detailed procedures and specifications.
The Jaguar XJS from 1994 typically features a 4.0L inline-six or a 6.0L V12 engine, depending on the specific model variant. The "FF34" engine code generally refers to the 4.0L AJ16 engine, which is known for its smooth performance and reliability. This engine was part of Jaguar's efforts to modernize their lineup during the 1990s, offering improved fuel efficiency and emissions compared to earlier models. If you require more specific details about this engine, such as specifications or common issues, please provide additional context.
Is this a v6 engine? Does it occur only under load (in gear, wors if you power brake lightly)? If the answer to these questions is yes, it is an ignition fault, probably the wires but check for worn plugs or weak coils also.
For the 1994, you have to remove the negative battery cable, then depress the brake and hold it in for 5 seconds to reset the check engine light.