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Old 08-15-2008, 08:40 PM
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Join Date: Sep 2005
Location: Los Angeles, CA
Posts: 47
CIS Temperature sensor resistance on 104.980

I'd like to check if this sensor is responding correctly because my car (91 300CE) has very low performance (take about 10 seconds to go from full stop to 2000 RPM on the 1st - should I say 2nd... - gear) when both engine temp is higher than 65 C + A/C is ON and outside temperature is higher than 85 F (any other ideas welcome).

So to start with temp sensor related issue, I'd like to know what is the resistance this sensor (the 4 pins one) is supposed to return a 20C, 40C, 60C and 85C?


From 300CE to SLK230K

Last edited by StephFR; 08-15-2008 at 08:48 PM.
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Old 08-15-2008, 09:29 PM
slk230red's Avatar
WECO Installer
Join Date: Jul 2006
Location: Tampa, FL
Posts: 820
Measure across pins in an X pattern, 1 to 3, 2 to 4.


20c, 2400 ohms
40c 1200 ohms
60c 600 ohms
85c 200 ohms


1993 190E 2.3
2001 SLK230
1971 LS5 (454) Corvette Convertible
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