jc7834 Posted March 17 Share Posted March 17 Recently bought 2005 with 2.3L duratec, it seems to run well but, fuel economy is really bad, there is an engine tick, and it occasionally surges/searches at idle (will pulse every few seconds from 800 to ~1500 RPM, this is only sometimes, never on startup, always after coming to a stop at a light). No codes at all. I will end up taking it to the shop but want to do my best to look for a few things first: I will do my best to look for exhaust manifold leak – maybe that is the tick, not a lifter I can change PCV valve and hose because why not, is there any way to know if hose is torn without tearing it all apart to get at it? If I start looking for vacuum leaks, any suggestions on most likely places? Are any of these actual possible causes for the symptoms? I just got forscan, it is my first time with a tool that can look beyond DTCs. Is there any parameters I can look at to do some diagnosing? Fuel pressure? Engine control? Quote Link to comment Share on other sites More sharing options...
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