check engine light comes on in my 1995 legacy gt when cold, when sitting idle the fan is cutting in when cold
when driving from cold, light is off, comes on after about 30 secs stays on from any where from 30seconds to a minute then goes off,does not come again. it only does this when its cold,any suggestions?
when light does come on the cars does seem to run a lilltle lumpy but once warm there is no problem whats so ever.
any ideas,

 

sounds like coolant temp sensor butu check the codes here

Simon