190E 2.3 (201.024) L4-2.3L (102.961) (1984)
Idle Up Control Valve: Customer Interest
Fuel - Idle Speed Air Valve Design Change
TO:
OUR MERCEDES-BENZ PASSENGER CAR DEALERS
DATE:
February, 1985 REF. NO.. 09/10
SUBJECT:
MODIFIED IDLE SPEED AIR VALVE ENGINE 102.961
Figure 1A - Previous Version
Figure 2B - Modified Version
Since April 1984, the air passage (arrow, Figure 1) has been relocated from the idle speed air valve into the hose connection (7a, Figure 3).
Production Phase-In
Engine
As of Chassis End Number
102.961
A082222
F021622
Figure 3 A - Previous Version B - Modified Version
Repair Notes
If the idle speed air valve is replaced on vehicles with the previous version, proceed as follows:
The hose connection (7a) with vacuum line (a) and the flexible hose (1) without vacuum line should be installed. The vacuum line of the diaphragm
pressure regulator should be connected to the vacuum line (a) of the hose connection (7a). Refer to Figure 3.
a Vacuum line to diaphragm pressure
regulator
1
Flexible hose