Engine vibrates or surges at idle, poor accelerator response - AF01.20-P-6100A

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ENGINE 271 in MODELS 171, 203, 209, 211

MODIFICATION NOTES

6.10.06

Part number for partial load vent hose updated

OPERATION NO. OF OPERATION TEXTS OR STANDARD TEXTS AND FLAT RATES

Category	Op. no.	Operation text
P	541011	Perform quick test
P	023777	Replace partial load vent hose from crankcase to connection fitting. Includes removal and installation of compressor.

Damage code	Cause	Remedy
09 123 07	The partial load vent hose may be torn at the connection fitting to the crankcase. Engine sucks in additional air not measured by the hot-film air mass flow sensor and runs too lean.	1 Remove compressor.	AR09.50-P-4705QK
	Engine vibrates or surges at idle, poor accelerator response.	2 Remove, install, replace partial load bleed hose (arrow) from crankcase ventilation.
	The following DTCs are stored in the ME control unit (N3/10) DTC memory: P 2029 (P 0172), P 2046, P 201C, P 201A	Fasten with click clamp specified in parts ordering notes on fitting.
		Ensure that click clamp is positioned as close as possible to the end of the hose and fastened.
		3 Install compressor.	AR09.50-P-4705QK

Fig 1: Locating Partial Load Vent Hose

PARTS ORDERING NOTES

Part no.	Designation	Quantity
A 005 997 49 90	Clic clamp	1
A 271 018 10 82	Partial load vent hose	1