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Old 06-04-2015, 03:11 AM
Benz Mondi Benz Mondi is offline
Benz Mondi
 
Join Date: Nov 2006
Location: Sacramento area
Posts: 308
Previous codes fixed. Now it's #3 and 11?

Quote:
Originally Posted by duxthe1 View Post
The black one near the firewall is read by the ecm. It is a 4 pole sensor, consisting of two seperate thermistors. You can check and compare their resistance by measuring corner to corner.

The two pin sensor is actually a switch for the fan. The single pole is the sender for the gauge.
Excellent info! Thanks. I discovered two disconnected vacuum lines and attached them. So now the trouble codes are 3 and 11.

The socket that plugs into the 4-pole has a flat spot on one side, presumably so that it can only fit one way onto the sensor. The problem is the previous owner put in a new (after market sensor) and it doesn't have a flat spot to match. It may even be the wrong sensor. It's run a little rough from the first day (discounted the price). I can plug it in any orientation. I've marked it so that I can try different orientations in the morning.

Thanks.
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03 CLK430 Cabrio 211K Pweter Silver/ Oyster Leather
90 300SEL 214k Pearl Black/ Alto Grey/Black Leather

Prior: 85 190E, 88 300TE, 89 300TE, 90 300E 2.6, 90 300TE, 92 300E 2.6, 91 and 93 300SL, 87 Ferrari Mondial Cabrio
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