My theory was if the knock sensor was faulty, it would not detect the pre-ignition eventually leading to the engine chewing itself up. Not sure how 2 work. Is it a backup system or does one detect one side and one detects the other? I'm not sure what else would lead to the noise.
The other...
I have a 5.0OSi-E motor in my Regal. My understanding is that this motor is identical to the 5.0GXi-E with the only difference being that the OSi uses the XDP outdrive while the GXi uses the SX outdrive. Therefore, everything should be the same for mine as a 5.0GXi. Although a google search...
That is all it is achieving. At some point, it has gone to 4990 (according to the ECU). My normal max is 4400-4500. Nothing on the top 40% of the throttle. Maybe that is normal for an MPI motor. This is the first one I have had so it may just be getting used to how this motor performs...
It maxes out at 4400 RPM normally. I think the 4600 was with the 15 MPH wind. So it normally maxes out at 4400 RPM. I can lower the throttle from full to 60% and there is no decrease in boat speed or engine RPM. It just seems sluggish out of the hole and I have never had a boat that you...
The boat was not running when I bought it. It had the 4.3L V6 in it when I got it. IT was trashed from salt water. I found this larger motor already rebuilt for about what it would cost me to repair and rebuild the old motor...plus I get some additional horsepower. The rebuild was done by a...
The plugs shown in the picture were NGK I think. They were the recommended ones from the manual. I wasn't 100% confident in them so I replaced them again this year with AC Delco 41-101 iridiums. No change. And, yes the motor is MPI. Same as the 5.0Gxi motor. Thanks.
Still trying to troubleshoot my issue. This is a 5.0OSi-C (maybe a D...it was built in 8/2003). Took my Diacom data to a local Volvo mechanic to get some feedback and suggestions. FIrst of all, he asked if the ECM was in break-in mode. He said the ECM will limit the RPM to ~4400 RPM during...
In trying to troubleshoot my low power issue (you can read about that here: https://forums.iboats.com/forum/engine-repair-and-maintenance/volvo-penta-i-o-inboard-gas-engines-outdrives/10785351-5-0-osi-e-low-power-unable-to-hit-rpm-wot if you are really bored), I am starting with the basics on my...
Background...I have been trying to troubleshoot this low power issue for a few weeks now. The motor while trying to get on plane basically stalls out at 3000 RPM until it finally gets on plane after about 10 seconds then maxes out at 4300 RPM. The boat is a Regal 2120 (21 foot boat I believe)...
I am still trying to see what if any store DTC's I have on my ECM. My engine is an 5.0 OSi-E (serial 4012110198) using an MEFI 4 (4b I think) ECU. My understanding is that putting the ECU in Service Mode will cause the ECM to flash stored DTC's. I believe it is also supposed to flash code 12...
I have DTC 44 on my 5.0 OSi-E (serial 4012110198). I am going through Volvo's manual on troubleshooting and on step 5 it says to disconnect J1 and check J1-17 (knock sensor circuit) to ground. Value should be "93-107k ohms. My first question: is that 93 ohms to 107,000 ohms? That seems...
