Car recently started struggling going uphill and wont accelerate past 70 no matter how much i press the pedal.
At 70 when it caps the rpm wont go past 2k rpm. But from 0-60 the rpm does pass 2k.

Changed air filter, cabin filter, fuel filter and didn't worked.

Fuel pressure when driving is around 40-50 depending on speed. FYI..

What can be the problem. Also no check engine light and scan tool shows no engine faults.

 

Check and read your OBDII codes and post them. It sounds like you are in a restricted mode.

Gus
JagRepair.com - Jaguar Repair Information Resource

 

Did the early XFs have a speed limiter option ? On my 2017 XE, I can set the maximum speed for the car.

 

Yes, the early cars had ASL (Automatic Speed Limiter). It one of the buttons to the rear of the gear selector and has what looks like a clock face on it.

 

Just in case. Here is my info from the owners manual;
Automatic speed limiter (ASL) PRINCIPLE OF OPERATION ASL can be used in a situation where varying vehicle speed is likely but a maximum speed must not be exceeded. For example, where a local speed limit is 80 km/h (50 mph), the set speed could be at that limit or just under. If ASL is not selected, cruise control is always available by simply rotating the thumb wheel on the right-hand side of the steering wheel to set a cruising speed. The ASL button allows the driver to select between cruise control and the automatic speed limiter. The ASL can be set to any speed between 30 km/h (18 mph) and 240 km/h (150 mph). Note: Although ASL only operates at speeds between 30 km/h (18 mph) and 240 km/h (150 mph), the maximum speed can be set when the vehicle is stationary. When ASL is selected, the warning indicator in the instrument panel will illuminate. When the ASL button is pressed again, the light will extinguish, ASL will be cancelled and cruise control will be available again. USING THE ASL Setting a speed limit • Press the ASL button. • Use the thumb wheel (1) to set the required speed. The message centre display in the instrument panel will show the selected speed. • The set speed can be adjusted at any time by rotating the thumb wheel (1). WARNINGS Automatic Speed Limiter (ASL) set speeds must be within local speed restriction limits. The driver must always ensure that a safe speed is set, taking into account the prevailing traffic and road conditions. In certain conditions, such as a steep downhill gradient, the vehicle speed may exceed the set speed limit. This is because engine braking is unable to maintain or reduce the vehicle speed. Driver intervention may be required. E94156 E97092 2 3 1 Automatic speed limiter (ASL) 168 Note: The message is also displayed at other times as an information display. When ASL is selected and a set speed inserted, the engine will respond normally up to the set speed. Further accelerator pedal pressure will not increase the vehicle speed beyond your set speed, unless kickdown is initiated, in which case ASL will be suspended. Suspending ASL ASL can be suspended by pressing the CANCEL button (3). Applying sudden, rapid acceleration (kickdown) will also suspend ASL. Resuming ASL If ASL has been suspended, it can be reinstated with a single press of the RESUME button (2), however, ASL will only reinstate if the vehicle speed is less than the current speed set in memory and greater than 30 km/h (18 mph). The message centre will display an appropriate message if the vehicle speed is too fast to resume ASL. Exceeding the set speed If the set speed is exceeded, e.g. on a steep downhill section, the message centre will display an appropriate message along with an amber warning indicator. There are three categories of over limit displays: • If the set speed is exceeded by up to 3 km/h (1.8 mph), the message centre will display the message along with an amber warning indicator. • If the set speed is exceeded by more than 7 km/h (4 mph), the message centre will display the message along with a flashing red warning indicator. • If the set speed is exceeded by more than 7 km/h (4 mph) for a duration of four seconds, the message centre will display the message along with a flashing red warning indicator and an audible warning tone. Use your brakes to rectify the situation. ASL unavailable If ASL is not available due to a fault, the message centre will display an appropriate message along with an amber warning indicator. The message and warning indicator will display when the driver attempts to use ASL. When the ignition is switched off, ASL is deactivated and any set speed is deleted from memory. LIMITER SET XXX km/h (MPH) LIMITER CANCELLED TOO FAST TO RESUME OVER LIMIT XXX km/h (MPH)

 

I did not consider the ASL. I had read about it but never used it. I have a lot to learn about the XF.

Gus
JagRepair.com - Jaguar Repair Information Resource

 

ASL is disabled and the obd shows P0411 but the check engine light doesn't come on.

 

It could be a temporary code. I would clear the code and see if it comes back again and see if the problem still exists.

Gus
JagRepair.com - Jaguar Repair Information Resource

 

Any update?

Gus
JagRepair.com - Jaguar Repair Information Resource

 

Is your car a diesel? Might the DPF be clogged? Just a thought.