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    Volvo Penta GXi-E Low Power and 2 DTCs

    Finally got boat working well! Replaced cap and rotor AGAIN and now jumps up to plane with 10 people in the boat (and at altitude too, btw). This was the first thing I replaced (with OEM) when problems started a little over a year ago. Must've had multiple issues when I first replaced, but...
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    Volvo Penta GXi-E Low Power and 2 DTCs

    Yep, I live in Colorado. This was recorded at Horsetooth Reservoir at 5,430'
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    Volvo Penta GXi-E Low Power and 2 DTCs

    I didn't make any recordings with engine off. I will have to check when get up to the boat again. I was curious what the pressure readings of the manifold should be at WOT because my recording is showing readings close to atmospheric. Wondering if there supposed to be high vacuum at WOT
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    Volvo Penta GXi-E Low Power and 2 DTCs

    You are probably right as the flapper parts are not listed in the exhaust diagram for the gxi-e.
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    Volvo Penta GXi-E Low Power and 2 DTCs

    Ah, you are talking about the intake. Yes, I have cleaned the intake spark arrestor (multiple times), but you do have me looking into the exhaust now. I am going to see if the flapper (which apparently isn't needed) might be causing the problem.
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    Volvo Penta GXi-E Low Power and 2 DTCs

    I haven’t looked at the exhaust at all but good idea. I will check it out, thanks!
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    Volvo Penta GXi-E Low Power and 2 DTCs

    Hey QBhoy, I did try moving the distributor 1/8-1/4" clockwise and counter clockwise which did not seem to make things better, in fact they seemed a little worse, but hard to say exactly. I did record scan tool readings for both directions which I can send if you think it would be helpful.
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    Volvo Penta GXi-E Low Power and 2 DTCs

    Hey tpenfield et al! So after a long winter I finally got the boat back in the water. I went through the diagnostic procedure for clearing the DTC 41 codes with a test lamp this time and sure enough what was reading 12 volts with DMM did not light the test lamp which lead to "replace ICM"...
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    Volvo Penta GXi-E Low Power and 2 DTCs

    Perfect thank you! Apparently I'm unable to call it correctly. I will refer to it as the flux capacitor from now on.
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    Volvo Penta GXi-E Low Power and 2 DTCs

    Thank you tail gunner and alldodge. I am learning a lot reading your responses. Got any tips on how to properly phase HSV (which I will stop calling a distributor, lol)?
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    Volvo Penta GXi-E Low Power and 2 DTCs

    Thanks Brich. From what I remember, the pressure was 55-60 at idle and never dropped below 45 at WOT under load. What I can't remember is if stabilized higher. Another thing to test again when I can put the boat in the water.
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    Volvo Penta GXi-E Low Power and 2 DTCs

    Good to know wrench, thank you! I have purchased a test lamp and will go through the service manual steps again using a test lamp when I de-winterize.
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    Volvo Penta GXi-E Low Power and 2 DTCs

    I have use two different pressure gauges. I measured the pressure at idle and watched the pressure while under load at WOT and pressure never dropped too low (never went below 45 psi if I can recall)
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    Volvo Penta GXi-E Low Power and 2 DTCs

    Good to know alldodge! What I meant was at or below but within 10% of full mark on dipstick. I have never measured it over full mark.
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    Volvo Penta GXi-E Low Power and 2 DTCs

    Thanks for the reply tpenfield! Yes, it does have variable timing. I don't know enough about the timing to know what are good or bad readings. The history: I just bought this boat last summer. It did seem to run properly for the first 3-4 outings before the power issues started. Before I...
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    Volvo Penta GXi-E Low Power and 2 DTCs

    Thanks for the reply QBhoy. It was actually the first thing that was replaced when the problem started and this was an OEM cap, btw. I did not know about the 90% guardian mode. Would that keep the RPMs low in neutral too? I am able to quickly rev up the engine to 4800+ (had more throttle...
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    Volvo Penta GXi-E Low Power and 2 DTCs

    Will do this weekend hopefully (weather depending). Thanks again for the advice!
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    Volvo Penta GXi-E Low Power and 2 DTCs

    Thanks tpenfield. Guaranteed I replaced too much. I am about to put a whole new motor in it because this is driving me nuts!!
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    Volvo Penta GXi-E Low Power and 2 DTCs

    Connections from the ICM look good. I mostly get OEM, but not always the case. I do make sure the ratings are good, but you are right, you get what you pay for sometimes. I will check the cam and crank plugs when I install the new camshaft position sensor.
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    Volvo Penta GXi-E Low Power and 2 DTCs

    I believe the ICM was included in the coil assembly I replaced, but I was leaning in the same direction that it is something to do with the timing. I have purchased a new camshaft position sensor, but have not installed yet and won't be able to test until Spring. I have a recording of boat...
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