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

Tiny
PRINZE NASEEM
  • MEMBER
  • 1993 MERCEDES BENZ 400SEL
  • V8
  • 2WD
  • AUTOMATIC
  • 138,000 MILES
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 make bigger)
Thumb
Thursday, December 8th, 2016 AT 8:50 PM

3 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Have you checked the fuel pressure and are there any codes set? Not all codes will set a check light.
Was this
answer
helpful?
Yes
No
+1
Thursday, December 8th, 2016 AT 11:51 PM
Tiny
PRINZE NASEEM
  • MEMBER
  • 3 POSTS
Thanks, no I did not I order one.
Was this
answer
helpful?
Yes
No
Friday, December 9th, 2016 AT 5:26 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Okay let me know what you find and re post if you require further information.
Was this
answer
helpful?
Yes
No
+1
Friday, December 9th, 2016 AT 3:43 PM

Please login or register to post a reply.

Related Engine Low Power Content

Fix an Engine with Low Power!
VIDEO
Fix an Engine with Low Power!
Instructional repair video
Symptoms of Low Engine Power
GUIDE
Symptoms of Low Engine Power
The power your car's engine is producing is important. When you step on the gas you need your car to accelerate, mainly to keep you out of trouble when getting onto the...
VIEW MORE