I have a 95 4.3 w/automatic transmission and it's been idling rough lately. My check engine light flashes when I first start it but goes away after a while. It's got new plugs and a new cap. I also just put a new intake gasket on which solved my coolant loss problem. Anybody got any ideas? Thanx.

EGR valve may need cleaning

Possible vaccum leak?? Make sure your air hoses are tight especially after the MAF. Air leaks after the MAF will throw a code. Maybe a vaccum hose is off or cracked?

LOL

read the history codes