240 L4-2.3L SOHC VIN 88 B230F (1986)
Temperature Gauge: Customer Interest
Temperature Gauge - Erratic or Too High Reading
Subject:
Product
TEMPERATURE
GAUGE READING
CARS
1986-1987
Group
240 ALL
38
Date:
No.
MARCH 1987
108
THIS BULLETIN APPLIES TO THE U.S. AND CANADA
REFERENCE:
R & M TP 30988/1 (English); CLIMATE UNIT
Temperature gauge, erratic/high reading, M/Y 86-87
NOTE:
Vehicles manufactured after the following CH. Nos. have been corrected in production and do not require this service solution
244
-
251931
245
-
746181
Erratic or too high a temperature gauge reading is usually caused by poor contact between the instrument cluster printed circuit board and the
temperature compensating board. The poor contact is due to flux remaining from the soldering process of the instrument cluster printed circuit board.
In this case, remove and disassemble the instrument cluster. (See Service Manual Pg 6; steps E6-E9.)
-
Remove the temperature compensating board (1).
-
Clean the contacts (2) carefully using a thin object, such as a sharpened piano wire.
-
Make sure that the small tongues of the contacts are not distorted. If so, bend them carefully inward so they make good contact with the pins
of the printed circuit board.
