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Thanks for the replies, The black sensor is 3 ribbed as well, it actually is opposite the green/gray ribbed sensor so you cant mixup plugs. I reinstalled the original and have been able to drive it for a couple runs now; the drivability issues are gone and no lights. I think fixing the broken ground...

Hello Everyone, This is my first time posting to your site, but not my first time visiting. :) I have a 93 MX-3 GS 1.8L which is stock. Most of you are probably aware on the 92-93 GS's there are 3 water sensors, green one, black one and one for the gauge. The green one (CTS code 9, I believe) checks...