I CHANGED MY BENZ MAKE ENGINE ITS GIVING A ERROR CODE PO175

2003 Mercedes Benz C240

Tiny

amarsandhu

February, 8, 2012 AT 4:57 AM

Idle speed cannot control rpm is 10000 when I start

FOUND 23 RELATED QUESTIONS

5 Answers

Tiny

rasmataz

February, 8, 2012 AT 5:06 AM

Running rich and also look for vacuum leak

Tiny

rasmataz

February, 8, 2012 AT 5:11 AM

Its running to rich check oxygen and coolant temperature sensor and also look vacuum leak

Tiny

rivermikerat

February, 8, 2012 AT 5:13 AM

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.

Tiny

rivermikerat

February, 8, 2012 AT 5:23 AM

Yargh. You beat me again. Walk the plank!

Tiny

rasmataz

February, 8, 2012 AT 5:31 AM

Got ya

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