190E 2.3 (201.024) L4-2.3L (102.961) (1984)
1.
Unplug connector (0.75 mm dia., green/red) at coolant temperature sensor (B11/2) (Figure 5).
FIGURE 6 - CONNECT 470 OHM RESISTOR IN SERIES
2.
Connect 470 Ohm resistor in series (arrow) between unplugged connector and temperature sensor (Figure 6).
3.
Check on-off ratio and idle rpm. See Service Microfiche Engine 102 Combustion IIIa Job No. 07.3-106.
Parts Information
Part Name
Part Number
Auxiliary Wiring Harness
201 540 78 34
Cable strap
001 997 42 90
470 Ohm resistor
201 540 80 34
Time Allowance
02-0219/41
Auxiliary Wiring harness (Idle speed), install
1.3 hrs.
02-0220/41
Auxiliary Wiring harness (Idle speed), install
1.0 hrs.
(with maint. or repair work)
02-0221/41
470 Ohm Resistor (Warm-up response), install
0.3 hrs.
02-0222/41
470 Ohm Resistor (Warm-up response), install
0.1 hrs.
(with maint. or repair work)
Technical Service Bulletin # 07.3_005
Date: 861201
Idle Speed - Installing Harness and Resistor
TO:
OUR MERCEDES-BENZ PASSENGER CAR DEALERS
DATE:
December 1986 REF..NO. MBNA 07.3/5
SUBJECT:
A. INSTALLATION OF AUXILIARY WIRING HARNESS TO RAISE IDLE SPEED WITH TRANSMISSION ENGAGED. MODEL 201.024 MODEL YEAR 1986 ONLY
B.
INSTALLATION OF 470 OHM RESISTOR AT COOLANT TEMPERATURE SENSOR TO IMPROVE THROTTLE RESPONS
In case of complaints about engine shaking when engaging the transmission or poor acceleration when the engine is cold, the service measures listed
below can be performed to remedy the situtation.