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Steve, BMW Expert
Category: BMW
Satisfied Customers: 25231
Experience:  BMW Expert
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0n my x5 2003 diesel it has problems accelerating in all gears.

Customer Question

0n my x5 2003 diesel it has problems accelerating in all gears. had fuel filter changed twice which cured the problem but only for a day or two. now it occurs then its fine for a day then returns again.
Submitted: 3 years ago.
Category: BMW
Expert:  Steve replied 3 years ago.
do any warning lights come on?
Customer: replied 3 years ago.

no warning lights and the problem comes and goes

Expert:  Steve replied 3 years ago.
why was the fuel filter changed? what testing was carried out?
Customer: replied 3 years ago.

filter changed by garage where car was purchased as they said it was the fault

Expert:  Steve replied 3 years ago.
I will provide an honest answer. I trust this will be appreciated. Please remember that a low rating PUNISHES me for being honest and that I receive nothing for my time until a positive rating is clicked.

I would suspect you have a fuel pump or mixture fault. Proper hands on testing while the fault is present will be required to verify. A faulty fuel pump or airflow sensor would be the most common cause of such a fault.

Please let me know if you have further questions. Please do not forget to click a positive rating as this is the only way I receive credit for my answer, thank you. Best wishes with your vehicle.