Changed fuel filter, still loses power, please help.

 

I've moved your post to the S-Type section.

Your going to have to use more words to explain the problem....

 

It is helpful if you can also provide the MY, vehicle type, engine size and other details along with the symptoms you are experiencing.

Are there any DTCs stored? If so, post them here.

 

Give as many details as possible I know Jagv8 and Joycesjag are VERY knowledgeable.
Theyve never steered me wrong.
Good luck

 

Oh ask Grant Francis as well.

 

Jaguar x type 2.5 lt. 60,000 miles, it had the original fuel filter and oil filter too. Jerks a little after 45 minutes drive and than
it slows down, I shut the engine for 10 seconds turn it back on and the jag. runs okay for another 30 minutes or so, help.
Thank You, Eddie.

 

After driving the car for at least 45 minutes, it starts to slow down and as pump the gas it jerks and comes to a stop, I shut the engine for about 10 to 15 seconds start the jag. and continue for about 20 to 30 minutes, and I continue to
do this, until I get home, plan to see a jaguar mechanic this week, lets see what he tells me, 40 years ago I restored Corvettes,
from the 60's, not anymore. Thank You, Eddie.

 

I hope you did not mean the oil filter has 60K miles on it??
.
.
.

 

Wait, S-Type or X-Type?

Either way you will need some proper diagnostic equipment to read fuel pressure, fuel trims, etc.

 

islarealty,

Per your description of your car I have moved your thread to the forum for the X-Type. If, in fact, you have an S-Type, please let us know so we can move your thread back.

Cheers,

Don

 

Could be an aging fuel pump. Just spit balling, but the next time it stalls and won't immediately restart, try this:

1) Lift the front edge of the rear seat a few inches
2) Move the ~5 inch rubber plug beneath the rear seat to access the fuel tank
3) Sit in the driver's seat, reach behind and place one hand on the top of the fuel tank
4) With the other hand, turn the ignition key to the run position for ~15 seconds. Not the start position, just the run position to light up the dash and energize the electrical system.
5) Each time you turn the key to the run position, your hand on the fuel tank should feel soft vibrations of the fuel pump energizing for 3-4 seconds to pressurize the fuel rail. If you don't feel soft vibrations, then the fuel pump is not energizing, there's no fuel pressure, and the engine won't start. Time for a new pump.

An aging fuel pump can work properly for a while, intermittently fail, then work properly again (until the next intermittent stall). At ~120K miles, the pump in my X-Type always worked reliably on 5-15 mile trips, but failed once or twice a month during my 40 mile workday commute, typically ~30 miles into it. After a few minutes "resting" on the side of the road, the pump worked fine again for the last ~10 miles of the commute. Rather frustrating, since it fails without warning, it's not easy to access the pump in our X-Types, and you want to be certain before investing the effort and cost to replace it.