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240 rough idle 200 1985

A bad oxygen sensor can also make you run rough and rich. Try to find the wire coming up from the exhaust to the firewall in front of the passenger. Unplug it. If the car runs better with the 02 sensor unplugged, I would suspect that. A generic one (which needs to have the wires spliced onto your existing connector) is $40 or $50. One that plugs right in is closer to $100.
--
Andy in St. Paul, '91 745 Regina 198K mi, '89 244 142K, '87 245 RIP






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