2003 Mercedes Benz C240 Repair Question
Topics covered: Rpm, Vacuum leak, Air filter.
Mileage: 80,000 miles.
Mileage: 80,000 miles.
Asked on February 8, 2012
I changed my benz c240 2003 make engine its giving a error code po175
Idle speed cannot control rpm is 10000 when i start
Asked by amarsandhuAnswer
Replied on February 8, 2012
Running rich and also look for vacuum leak
Replied on February 8, 2012
Its running to rich check oxygen and coolant temperature sensor and also look vacuum leak
Replied on February 8, 2012
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.
Replied on February 8, 2012
Yargh. You beat me again. Walk the plank!