C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

Help determine problems

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Old Mar 16, 2011 | 05:31 PM
  #1  
Pottie's Avatar
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From: Dallas TX
W163 & 203
Help determine problems

Couple months ago the car suddenly wont start and we found out the problem was fuel pump relay, replace that and work fine
Today car having hard time to idle and die, tried couple times and same result
Technician told me ahead to be ready to replace fuel pump eventually
Need your input, is it possible fuel filter instead fuel pump
I still can hear the pump working before I crack the car, is blurping to get idle and die slowly....
Thank you
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Old Mar 17, 2011 | 08:49 AM
  #2  
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pcy
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Joined: Mar 2004
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From: Boston, MA
'14 ML350, '13 C220 CDI, '07 C280, '98 ML320
What brand fuel filter did you buy? MB fuel filter?

When the truck dies, does the check-engine-light come on?
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Old Mar 17, 2011 | 09:09 AM
  #3  
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From: Dallas TX
W163 & 203
As far as I know should be original since the beginning...and havent replace
No check engine either, everything looks normal when key on
I figure either one but need to diagnose for details
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Old Mar 17, 2011 | 10:19 AM
  #4  
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From: centennial, CO
2003 c240
you should definately changed the fuel filter first. It's fairly cheap and will need replacing anyways.
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Old Mar 18, 2011 | 10:54 AM
  #5  
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From: Dallas TX
W163 & 203
Finally got some spirit last night to removed back seat and check if fuel pump does have power or not, it does have power as we test it
So I m gonna get fuel filter and fuel pump for a plan and I ll replace the filter first and if is work then it would be great and save money....
I also looking for fuel pump diagramph if anyone have it and DIY for that
Thank you
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Old Mar 18, 2011 | 11:38 AM
  #6  
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From: VA
2002 C320
Rough idle and die could be MAF.
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