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| O2 sensor failure on Indmar 409 SS series http://www.axiswakeboardboats.com/viewtopic.php?f=14&t=4729 |
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| Author: | HalfKiwi [ Tue Oct 30, 2018 4:40 pm ] |
| Post subject: | O2 sensor failure on Indmar 409 SS series |
Has anyone else had multiple O2 sensor failures. I have had mine changed four times now and they keep loading up with black soot (carbon). The boat runs perfectly, water temp/oil pressure/idle/top speed. The alarm keeps sounding and throwing the O2 sensor codes. What was your fix. |
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| Author: | dustinjean [ Wed Oct 31, 2018 1:34 am ] |
| Post subject: | Re: O2 sensor failure on Indmar 409 SS series |
What octane are you running and ethanol or non ethanol gas? Sent from my SM-G950U using Tapatalk |
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| Author: | dustinjean [ Wed Oct 31, 2018 1:36 am ] |
| Post subject: | Re: O2 sensor failure on Indmar 409 SS series |
Also what year? ecu might need a reflash to fix afr issue Sent from my SM-G950U using Tapatalk |
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| Author: | A22owner [ Wed Oct 31, 2018 6:57 am ] |
| Post subject: | Re: O2 sensor failure on Indmar 409 SS series |
Surf real heavy? I recommend running the boat WOT at the end of the day with no ballast. It will help burn the carbon off. |
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| Author: | Wilbur [ Sat Nov 03, 2018 11:59 pm ] |
| Post subject: | Re: O2 sensor failure on Indmar 409 SS series |
A22owner wrote: Surf real heavy? I recommend running the boat WOT at the end of the day with no ballast. It will help burn the carbon off. Wouldn't idling cause carbon buildup more than running heavy? I would think surfing or wakeboarding heavy at about 4k RPM would reduce carbon from building up. |
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| Author: | A22owner [ Mon Nov 05, 2018 6:56 am ] |
| Post subject: | Re: O2 sensor failure on Indmar 409 SS series |
Wilbur wrote: A22owner wrote: Surf real heavy? I recommend running the boat WOT at the end of the day with no ballast. It will help burn the carbon off. Wouldn't idling cause carbon buildup more than running heavy? I would think surfing or wakeboarding heavy at about 4k RPM would reduce carbon from building up. It can. One of the issues with people who surf heavy is that they are lugging the motor for very long periods of time. It runs slightly rich when this happens and this cokes the O2 sensors up. Take it easy after lugging it and putt around and it never gets hot enough to burn the carbon off effectively. |
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| Author: | HalfKiwi [ Sat Nov 10, 2018 7:35 pm ] |
| Post subject: | Re: O2 sensor failure on Indmar 409 SS series |
Thanks for all the input, I run 91octane, we do surf mostly. Tried running hot laps at 4500rpms. Still loaded up. Turns out the Stainless Steel heat exchangers develop small cracks that develop slowly. Out of warranty. I will be looking for something other than Indmar on my next boat. Only 247 hrs when first started. |
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