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e420 cuts at 4000rpm HELP!

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Old 11-15-2014, 02:21 PM
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mercedes e420 w210
e420 cuts at 4000rpm HELP!

hello! i have problem with my e420,it cuts at 4000rpm when im driving. when the car is cold and just started up and i drive it goes to 6000-7000 rpm like it should,but after 10 minutes driving when the engine starting to get normal temperatur it starting to cut att 4000rpm. i have changed the o2 sensor,both catalysators,spark plugs. and i checked the deafult codes,and it says misfire.cylinder 8. anyone knows what is it?
Old 11-15-2014, 02:58 PM
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Assuming you have 97 model with M119 Engine, isn't..?

Prefer to diagnose the car, many things could cause this issue,,

code will make it easy to know what exactly should to be replaced , instead of throwing $$$$..

ZAYED,,
Old 11-15-2014, 03:02 PM
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mercedes e420 w210
Originally Posted by cm60k
Assuming you have 97 model with M119 Engine, isn't..?

Prefer to diagnose the car, many things could cause this issue,,

code will make it easy to know what exactly should to be replaced , instead of throwing $$$$..

ZAYED,,
yes its an 97, it says misfire cylinder 8
Old 11-15-2014, 03:07 PM
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You may have a bad coil, try to pull it & put it in any other cylinder, then diagnosis again...

ZAYED,,
Old 11-16-2014, 12:00 PM
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i changed spot on the ignition coil on cylinder 8 and 7,and now it says misfire on cylinder 7 so i have ordered a new coil.
Old 11-16-2014, 12:30 PM
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Don't go with cheap aftermarket coils,,

just get OEM or Bosch only...

e420 cuts at 4000rpm HELP!-0001587203.jpge420 cuts at 4000rpm HELP!-00015872031.jpg

ZAYED,,
Old 11-16-2014, 12:32 PM
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mercedes e420 w210
Originally Posted by cm60k
Don't go with cheap aftermarket coils,,

just get OEM or Bosch only...

Attachment 298581Attachment 298582

ZAYED,,
i ordered this http://m.mister-auto.se/sv/tndspole-bosch-0300%20221%20504%20001_g689_a0300%20221%20504%2000 1.html

think its bosch

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