well, you're on to it now! Try applying +12V directly from the battery to the good choke and see if it opens up. You may need to open the throttle while you wait for it to open to trip it but it should open in 5 minutes or so. That will tell you if the choke itself is working or if it is the wiring to it that's bad.

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Marty D.

2013 C300 4Matic
1984 BMW 733i
2013 Lincoln MKz