Larry 50 Ohms off on the reading is ok. They are not perfect and the table is intended only for a guide, the only time the CIS-E cares about temp is 80C and below 40C. At 100C it supposedly cares as well to lean the mixture or raise idle to compensate for the higher temp. Certain years raised idle and certain ones leaned the mixture. Depends on if it is a KE-II or KE-III Jetronic! There were two diferent EHA's used. One that could sweep negative to accomodate leaning and one that could not and had its center point higher. So if it could not lean enough at 0V then it would increase idle to lean. I would check the O2 first as this could be bad and thus causing the EHA to not respond properly. The EHA does all the work for the CIS-E system using values from the Water Temp Sensor, RPM, and O2. The IACV and EHA do the rest to control Mixture. The EHA does it all when not idleing.

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~Jamie
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2003 Pewter C230K SC C1, C4, C5, C7, heated seats, CD Changer, and 6 Speed. ContiExtremes on the C7's.

1986 190E 2.3 Black, Auto, Mods to come soon.....