Engine - Rich Running Condition

Group: 24
Number: 93-10
Date: December 15, 1993

Subject:
Rich engine running condition

Model(s):
Cabriolet w/ DIGIFANT MFI
1990 - 1993 m.y.

Condition

A rich engine running condition may be caused by an improper or loose Engine Control Module (ECM) and Oxygen Sensor (02S) Ground (GND) connection.

Service





- check the Ground (GND) connection on the engine at the coolant flange mounting stud -arrow-

- ensure that the coolant flange mounting stud is installed tightly in cylinder head, tighten if necessary
^ 87 in.lb (10 N-m)

- ensure Ground (GND) connection on stud is clean and tight; clean and tighten connection as necessary