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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?
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Thursday, December 8th, 2016 AT 8:50 PM

3 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Have you checked the fuel pressure and are there any codes set? Not all codes will set a check light.
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Thursday, December 8th, 2016 AT 11:51 PM
Tiny
PRINZE NASEEM
  • MEMBER
  • 3 POSTS
Thanks, no I did not I order one.
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Friday, December 9th, 2016 AT 5:26 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Okay let me know what you find and re post if you require further information.
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Friday, December 9th, 2016 AT 3:43 PM

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