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Old 02-12-2002, 01:36 PM
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JimF JimF is offline
'94 S500: only 793 sold!
 
Join Date: Mar 2001
Location: San Diego, CA
Posts: 1,925
B11/2 is the ECT sensor . .

but my CH affects the B10/8, CTS (Coolant Temp Sensor). My mod does NOT affect the LH-SFI in any manner. For backup info, please read the MS thread:

How to change Aux Fan cut-in point

DTC #3 is differentiated from DTC #2 in that #2 points to the one side of the sensor whereas #3 points to the other side of the sensor.

The resistance values for this sensor vs temperature are:

Temp(C)--Temp(F)-------- Ohms
20 --------- 68 ----------- 2500
30 --------- 86 ----------- 1700
40 ---------104 ----------- 1170
50 ---------122 ------------ 830
60 ---------140 ------------ 600
70 ---------158 ------------ 435
80 ---------176 ------------ 325
90 ---------194 ------------ 245
100 ------- 212 ------------ 185

Both sides should track each other and be within 5% of each other. If not, then it needs to be replaced. Glad the CH kept you car cool during extended idle time.
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Regards . . . . JimF
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