S-Class (W140) 1991-1999: 300 SD, S 350TD, 300 SE 2.8, S280, 300 SE 3.2, 300 SEL 3.2, S320, S320L, 400 SE, S420, 400 SEL, S420L, 500 SE, S500, 500 SEL, S500L, 600 SE, S600, 600 SEL, S600L, 500 SEC, 600 SEC

Problem In my W140

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Old Apr 14, 2013 | 04:05 AM
  #1  
AlawyJenabi's Avatar
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w140 320 1994
Problem In my W140

hello every one
I have w140 s320 year1994, and i have a problem with it:
when i drive it and try to go faster the car reach about 145 km/h and no more speed, i don't have speed cross, i check the fuel pump and nozzle and every fuel filters... i confused with it and i don't know what i doing with it.. please if any one have a suggesting please tell me

thanks for every one
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Old Apr 14, 2013 | 06:07 AM
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s320
Has your wiring harness been replaced? How are your spark plugs and coils?
How about your air filter?Are your catalytic convertores stopped up.?
In mph the engine has a governor to stop at 130 mph.
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Old Apr 14, 2013 | 07:17 AM
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w140 320 1994
oldsinner111.... thanx for your replay...
I don't replace wiring harness, but i check spark plugs and coils and it's working good same thing about air filter....
"Are your catalytic convertores stopped up.?
In mph the engine has a governor to stop at 130 mph".... Can you enplane more about this points please.... thank you for your time
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Old Apr 14, 2013 | 07:20 AM
  #4  
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s320
there are special look like racing mufflers catalytic convertors,they are rare to stop up.If you have a U.S.A. car,it won't run over 130 mph.
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Old Apr 14, 2013 | 08:43 AM
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w140 320 1994
Thank you again... if this found in my car how i can delete it or ignore...??

thanks for all your ideas
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Old Apr 14, 2013 | 12:04 PM
  #6  
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s320
it depends on where you live,a Europeon Mercedes should have no govenor.I removed my catalytics.But if I was to move to california I would buy Mustang Catalytics to replace the Mercedes ones.Why because their cheaper.
Also I forgot maybe the mass sensor or Maf needs new one.
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Old Apr 17, 2013 | 04:09 AM
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w140 320 1994
Thank you my friend
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Old Apr 30, 2013 | 08:19 AM
  #8  
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w140 320 1994
May be i solve a part of problem... I was clean the Maf as test and i found change in my car so in a few days I try to replace Maf.... thank you again sir
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