revs staying at 2,000 even when flooring it.

1981 MERCEDES BENZ 300SD
200,000 MILES
Avatar
R FURIOUS
  • MEMBER
  • 2 POSTS
My Mercedes 300SD stays at, roughly, 2,000 rpm's. I find myself flooring the car just to see it climb 5 miles for every 4 seconds. I've changed the first fuel filter and the fuel lines. I have also changed the seals connecting the tubes to the turbo charger. I have also cleaned out the turbo air filter. I have also changed the main air filter on the top. The power loss happened before all of the maintenance and it still continues after all of the maintenance. Once you past 45 mph, it starts to pick up. When I first got the car it did not do this, it was running much more quickly. I have no idea whats wrong with my car, can anyone help me out?
May 7, 2012 at 12:48 PM
Advertisement
Avatar
DOCFIXIT
  • ✓ASE Certified Mechanic
  • 18,828 POSTS
  • ASE Certified Mechanic
Need to check fuel pressure and see if Turbo fans can move freely

Go to this walk thru links:https://www.2carpros.com/articles/engine-has-low-power-output and https://www.2carpros.com/articles/engine-hesitates
May 7, 2012 at 3:03 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.