Outcome? Solution?
Hey, wondering if you got this issue figured out? I have pretty much the same exact problem! I've read countless threads and similar issues but your situation seems like the closest match to mine. New engine, replaced coils, wires, plugs, O2 sensor, MAF sensor, air filter in stock airbox, gutted cat, cleaned throttle body, no vacuum leaks, cleared RAM/ESS, did re-learn process, etc. The car started doing this before I took it in and got a new engine and its still the same. It pulls harder because its a new engine but the hunting idle and stalling is still the same, maybe even worse...IM STUMPED. Any help or additional things you have tried would be great, I love my car but this issue is so frustrating.
Was this issue ever solved? I'm having this exact same problem. Just had a brand new engine installed and the stalling at idle issue started. sometimes it revs 'hunts' up and down between 700rpm~1200rpm until it finally stalls out when idling. The dealership couldn't find an issue. No fault codes on ECU. Engine shows good compression and no vacuum leaks. The Gas pump was tested and gas pressure is good. The ECU was upgraded and reloaded with new maps. All driving history was cleared, ESS was reset and VRAM cleared. The car was driven for new mapping until it completed all cycles. Voltage regulator shows good output. I have replaced the MAF, spark plugs, wires, Coils, ECU/PCM adn the air sensor in air intake. The shop is telling me they are going to have to rebuild the "Brand new" engine to see if something was overlooked at my expense with no guarantees.
Hey, wondering if you got this issue figured out? I have pretty much the same exact problem! I've read countless threads and similar issues but your situation seems like the closest match to mine. New engine, replaced coils, wires, plugs, O2 sensor, MAF sensor, air filter in stock airbox, gutted cat, cleaned throttle body, no vacuum leaks, cleared RAM/ESS, did re-learn process, etc. The car started doing this before I took it in and got a new engine and its still the same. It pulls harder because its a new engine but the hunting idle and stalling is still the same, maybe even worse...IM STUMPED. Any help or additional things you have tried would be great, I love my car but this issue is so frustrating.
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