Guest fordescort1 Posted April 19, 2014 Share Posted April 19, 2014 Hi all, I have a 1990 efi which has uneven idle which gets better when warmed up but still not right. I was tinkering this afternoon and decided to check connections to the sensors. There is a large screw in sensor at the top n/s of the inlet manifold which has a white plug. It is similar to the coolant sensor in the thermostat housing. When unplugged the revs pick up slightly and it idles spot on. Is this my fault and what is the sensor. Any help would be good Quote Link to comment Share on other sites More sharing options...
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