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    2019 Volvo V8 380 C-M won't start unless i give it throttle

    Ok, so i went over every inch of the harness I could get to, and it all seems intact, clean, and not in physical contact with the manifold anywhere. I did, however, find something interesting in doing this trace. On each manifold, there is what I assume to be one sensor, that screws into the...
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    2019 Volvo V8 380 C-M won't start unless i give it throttle

    Thanks for the suggestion. By wiring harness I'm assuming you mean the full network of wires that run between the fuse/relay box, ECM, and all the assorted sensors around various parts of the block? Specifically, tracing it and looking for any place it might have touched a hot manifold and...
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    2019 Volvo V8 380 C-M won't start unless i give it throttle

    So I don't think there have been any overheats during the time I've been involved with this boat. Certainly not during my sea trial or initial launch and based on engine hours when I initially tested/purchased the boat, it hadn't been used by anyone else. I looked into finding more freeze...
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    2019 Volvo V8 380 C-M won't start unless i give it throttle

    Here are the previous error codes. Just ran through them. I don't see where the engine hours are listed (unless that's the "count" value, but I assumed that was number of times it occurred, not when) Here is the video Oddly enough, after checking this, while leaving the scan tool connected, I...
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    2019 Volvo V8 380 C-M won't start unless i give it throttle

    There was one "active" code... I've included a picture of it here. Pretty sure this was in KOEO mode prior to starting using throttle workaround. SPN=697 - AUX PWM Driver 1/Analog Gauge Driver There were a bunch of previous errors but I don't think any of them were recent, but when I'm on the...
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    2019 Volvo V8 380 C-M won't start unless i give it throttle

    Not that I expect an easy answer to be found on this diagnostic, but just in case there was something obvious, I hooked a Techmate Pro up to the engine and ran through all the display lines. Per before, the workaround for starting it remains to put the throttle all the way up to enable...
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    2019 Volvo V8 380 C-M won't start unless i give it throttle

    Thanks again. I did replace the batteries since this video was taken, so it has more grunt at crank now for sure. I can definitely go check/clean the connections to make sure there's nothing else going on. Very stupid question.... I see 3 holes where it looks like something would be bolted...
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    2019 Volvo V8 380 C-M won't start unless i give it throttle

    Thanks for the context and explainer and suggestions. I’m having a hard time locating a Volvo tech of any kind at moment, let alone one with the training you describe. I live on the coast in Connecticut and I’m happy to pay anyone to travel if anyone on here has any leads. I’m curious what...
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    2019 Volvo V8 380 C-M won't start unless i give it throttle

    It was jumping around between 10-20 on the low pressure schrader valve and 55-60 or so on the high pressure side
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    2019 Volvo V8 380 C-M won't start unless i give it throttle

    I recently purchased a 2019 Chaparral 277 SSX with 100 hours on its Volvo Penta V8 380 The Sea-trial and initial launch were perfectly fine. Literally the next day I went to start the engine and it wouldn't. Cranks fine, but then won't catch/stay running. Here's a video of it doing this After...
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