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    Ford Escort 1.6 16v 1995 eng L1 Archived Message

    Posted by Craig Hewison on December 12, 2007, 6:17 pm

    HO2S Relay???

    Please bear in mind I've not been into diagnostics too long so I may have missed stuff here, however...

    Ford Escort 1.6 16v, won't tick over and very hesitant, unplug MAF and it runs fine, After checking MAF is receiving battery voltage as are the injectors and IAC. According to wiring diagram these components all receive power from pin31 of ECU, this pin however is providing 5 volts. So aside from a short circuit the only other thing between the ECU and components in question is a HO2S relay; I've never heard of one a cant find any reference to one, Ford dont recognise it either!! Had a new HO2S about 2 week ago but was fitted post problem by somebody else along with a cat.!

    Any help would be greatly appreciated!?!?!

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