When I step on the gas the idle goes down and it loses power

1993 MERCEDES BENZ 400SEL
138,000 MILES • V8 • 2WD • AUTOMATIC
Avatar
PRINZE NASEEM
  • MEMBER
  • 3 POSTS
I have a 420 SEL. I changed the spark plugs, wires, both distributor caps, engine wire harness, fuel filter, ignition coil. When I drive it looses power and hesitates. When in park I step on gas it idles down and loses power sometimes cuts off. What do you think the problem is?
Image (Click to enlarge)
Attached Media
Dec 8, 2016 at 8:50 PM
Advertisement
Avatar
MHPAUTOS
  • ✓ASE Certified Mechanic
  • 31,937 POSTS
  • ASE Certified Mechanic
have you checked the fuel pressure and are there any codes set? not all codes will set a check light.
Dec 8, 2016 at 11:51 PM
Avatar
PRINZE NASEEM
  • MEMBER
  • 3 POSTS
Thanks, no I did not I order one.
Dec 9, 2016 at 5:26 AM
Avatar
MHPAUTOS
  • ✓ASE Certified Mechanic
  • 31,937 POSTS
  • ASE Certified Mechanic
okay let me know what you find and re post if you require further information.
Dec 9, 2016 at 3:43 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.