1997 Mercedes Benz 300sd

1997 MERCEDES BENZ 300SD
86,000 MILES • 6 CYL • 2WD • AUTOMATIC
Avatar
STEVE EVANS
  • MEMBER
  • 1 POST
I own a 3 litre turbo diesel and I have noticed a drastic loss of power when accelerating in the drive position. The car is very sluggish and takes ages to accelerate.
If I change down to 3 or 2 the car accelerates much better.
Why is this happening?
Oct 4, 2008 at 2:12 PM
Advertisement
Avatar
DR LOOT
  • ✓ASE Certified Mechanic
  • 2,311 POSTS
  • ASE Certified Mechanic
it sounds to me like you have a plugged fuel filter,the reason the car runs better when you downshift, it is because you are raising in the RPMs, and the pump is getting more fuel, try changing your primary and secondary fuel filters. When's the last time you had the transmission serviced? that could also be an issue, the transmission filter is plugged, and starving for fluid, the higher RPMs makes it run better, check out those issues and get back to me.
Mar 6, 2009 at 10:24 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.