Idling Problem

Hi guys and gals.
Got a problem with idle, engine management light keeps coming up when you get to 60mph or around 3K rpm. logged code for air temp sensor which has been replaced still fault there. any ideas i think broken wire or circuit problem? any contribution welcome
and im fairly sure this has nothing to do with the eml on but my idle has randomly dropped to 200rpm so barely ticking over, no more codes stored, but when so low the idle control valve does not click as was previously until the revs brought up to normal 700rpm. Do any sensors affect the idle, lambda probe? knock sensor ? coolant temp ?
Please help

Paul
 

EH@B

Member +
about cheak engine light its knock sensor i think

the idle try to cheak ur igintion if it go that low
 
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