Engine - Rough idle speed
Models:
Omega-B 94..., Sintra 97...
Engines:
All
Option:
X25XE, X30XE
Group:
J - Engine
Trouble Code:
Compaint:
Poor Engine Driveability
Rough idle speed with upper ranged O2-idle characteristic map (right=1), and deteriorated power brake assistance.
Cause:
Leakage between EGR valve adapter and intake plenum. Due to a nonexeptionally behaviour in settlement of the gasket all three fastening screws are getting loose.
Production Solution:
Affected vehicles: Omega-B, as of MY 94, Sintra as of MY 97
Special Part:
No
Remedy:
Tighten the screws (8 Nm). Do not replace the gasket, because the gasket has already been settled. Tighten the screws again for a torque of 8 Nm after warm-up and cool-off.
Cat./Part-No.:
8 49 508/90 412 574