Coolant temp sensor for CIS - Mercedes-Benz Forum
 
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post #1 of 6 (permalink) Old 06-09-2019, 09:40 AM Thread Starter
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There is a fair aMount of conflicting information as to the type and location of the sensor. 4 pole, 2 pole green, by the firewall, by the thermostat housing. Can someone review the pics and let me know if my sensor that sends a signal to the cold start injector, is the two prong blue one?
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post #2 of 6 (permalink) Old 06-09-2019, 09:42 AM Thread Starter
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It appears that this was the former location of that same sensor (but 4 pole) on earlier models?
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post #3 of 6 (permalink) Old 06-09-2019, 09:44 AM Thread Starter
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And lastly, is this the one I need? When I enter 1991 560 SEL it says that this is not compatible. https://rover.ebay.com/rover/0/0/0?m...2F350909551121
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post #4 of 6 (permalink) Old 06-09-2019, 03:48 PM
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Originally Posted by lesguy View Post
And lastly, is this the one I need? When I enter 1991 560 SEL it says that this is not compatible. https://rover.ebay.com/rover/0/0/0?m...2F350909551121
No Les that is not the one. The one you want has four prongs itís black and round under a black, one inch diameter plug on top of intake manifold behind the idle control valve. You have to remove the air cleaner to see it.
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post #5 of 6 (permalink) Old 06-09-2019, 04:08 PM Thread Starter
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Thanks. Me thinks I’ve found it. This one? Circled in yellow? If so, appears to be part #0085423217
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post #6 of 6 (permalink) Old 06-09-2019, 05:53 PM
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That's the one.
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