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Volvo Penta 8.1l Gi-E (EFI) Stalls when bringing to Idle

Shivermetimbers

New member
Replaced the IAC and it ran fine last summer.
This year started up again, so replaced IAC and spark plugs. Still Stalls at Idle and wont start unless throttle is 1/4.
Tech hooked up laptop and suggested new map sensor, because the IAC looked like it was performing as it should but readings we different from my other working engine.

I switched map sensor with the other (working engine) and it started up and ran yesterday! We thought things were fixed but then stalled again bringing to idle while docking after about an hour on the water.
I am going to put a new map sensor in today along with fuel filter (even though it is only 6 months old)


Anything else I can test or try?
 
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