new to th site,lotsa good info,thanks.anyways95 civic d16y7 vtec a/t overheated every day for 2 weeks then finally blew th head gasket.as well as th knock sensor(hard to find little piece),ECT sensor AND switch,melted plug wires in their bores,nd a beautiful milkshake in th crankcase.i have replaced th head,intake,nd valve cover gaskets,plugs nd plug wires,ECT sensor nd switch,knock sensor,flushed oil nd coolant.trans fluid is still fine.when th engine is started, th idle jumps nd falls from about 2000 to 900 rpm.up nd down like thats normal.iv not found any vacuum leaks,ignition or timing problems or IAC problems.ran service manual tests nd got voltage where im sposed to on th IAC,no shorts nd so far ECU is fine. .anyone with a similar past problem please help me out?id apreciate it.im tired of tryin to find somethin thats not presentin itself. thanks to any who give it a thought.yo