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I changed my benz C240 2003 make engine its giving a error code PO175

Tiny
AMARSANDHU
  • MEMBER
  • 2003 MERCEDES BENZ C240
  • 80,000 MILES
Idle speed cannot control rpm is 10000 when I start
Wednesday, February 8th, 2012 AT 4:57 AM

5 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Running rich and also look for vacuum leak
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Wednesday, February 8th, 2012 AT 5:06 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Its running to rich check oxygen and coolant temperature sensor and also look vacuum leak
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Wednesday, February 8th, 2012 AT 5:11 AM
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
10,000RPM? Hard to believe.
Our reference doesn't show a P0175. I have found a number of mentions of this code in conjunction with a P0172. This means the air/fuel ratio is too rich. Check the fuel pressure. Check for a clogged air filter. Check the gap on the spark plugs(.039) and the plug wire impedance. MBZ doesn't supply shops with a specification for this, but expect in the range of 14Kohms to 20Kohms.
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Wednesday, February 8th, 2012 AT 5:13 AM
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Yargh. You beat me again. Walk the plank!
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Wednesday, February 8th, 2012 AT 5:23 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Got ya
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Wednesday, February 8th, 2012 AT 5:31 AM

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