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International Automotive Technicians Network
Re: 91 escort o2 won't switch
Posted to Emissions Forum on 2/10/2004

I havent been in here since the Ford Primary beast drove into my shop on friday...(And subsequently drove into the TDF forum) How did you end up on this problem?

The only notes Id have to offer would be that you cant EASILY verify open/closed loop on a 91, s... Login to read more.