Check the hose clips for tightness and inspect the trunking for any cracks or splits and as a consequence every the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best way to locate a leak is to have the engine presidency and warm and subsequently vaporizer lighter gas /propane or brake cleaner around each joint in turn. If the engine rev s occurring you ve found your leak.
Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me tell you a little more just about the trouble history. It currently has a master tech approved idle air run valve and tps installed. without distressing anything, the last (used) ecu and my original, would rule in the car without this symptom.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you up to date upon every maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms up and is warmed up? oftentimes in engine fake many factors may cause the same symptom(s)
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