E225FHLSTA (Ficht).
After sitting about four months (Covid-19), it’s developed an issue or issues that I have yet to diagnose.
On launch, starts immediately and high idles @ 1000 RPM with no issue whatsoever. Shifting in and out of gear also results in no issue. I let it warm up for several minutes and then take it for a run and exercise it thru the RPM range and it runs perfect. After about 10 minutes of running, come off plane and let it go to idle (650 RPM) and it will stall. Restart immediately and it stalls - numerous times. Occasionally, it will briefly idle (650 RPM) before stalling. From this point on, if I feather the hotfoot after start @1,000 RPM, it will idle fine. If I let it drop to about 900 RPM, it stalls. Rinse and repeat.
I changed both fuel filters. Dumped the fuel from the filter into a glass jar and let it settle for an hour - no water or contaminants. Verified all plugs were properly gapped and indexed. Removed and thoroughly cleaned the exhaust pressure sensor. No improvement on the water.
No issues on driveway muffs (15 minute idle) but not the same conditions as on the water.
It appears to have a “low idle” issue after warm and under load. Have EVDiags and intend to monitor TPS and fuel parameters but it is difficult to recreate the scenario and then actively monitor what’s going on.
Any clues?
Thanks...