Still tracking down cold idle issue. Car starts fine and rpm goes to 1000/min but there is a miss or rough idle or stumbling. ( feels like its not getting enough fuel )This exists until temp reaches about 60-80C then it is fine and runs like a dream with idle at 500/min.

-plugs, dist. cap, rotor are recent and I checked them again and see no problem
-new water temp sensor
-new OVP
-cleaned idle control valve(not very dirty). Pull off connector and idle increases so appears to be working
-frequency valve buzzes
-cannot find any problems with vacuum lines

have not checked cold start valve but since car starts right up I would think its ok?

thought I may have got "bad" tank of gas so I was able to fill up yesterday but so far this has not seemed to make any difference.

Would oil temp sensor or fuel pressue regulator be a culprit?

Appreciate any advice of where to look next. Thanks

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