Fuel consumption, running rich? help w 2 codes? - Yamaha Rhino Forum - Rhino Forums.net
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post #1 of 9 (permalink) Old 01-05-2020, 09:20 PM Thread Starter
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Thumbs up Fuel consumption, running rich? help w 2 codes?

Hey Everyone,

I have a new-to-me 2009-ish 700 EFI Rhino, and we use it daily on our property - it gets a lot of use! We did the first oil/ filter change on it last month.

Since I got it, it seems to be running rich (exhaust smells like unburnt fuel), and it seems to be consuming a lot of fuel. Of course this is subjective, since I've never had a Rhino before.

I watched some videos and pulled the diagnostic codes last night. The Rhino has 2 codes (D62=2, these are the d61 codes):

30 - Error drop sensor (triggered or faulty sensor), - self-diagnosed string D: 08;
46 - Error pokazateey voltage on the ignition module

These codes don't mean anything to me and I'm having trouble finding out what a "drop sensor" or "voltage on ignition module" mean. Everything else seems normal.

Thanks in advance for any help or guidance!
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post #2 of 9 (permalink) Old 01-06-2020, 08:14 AM
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Welcome! Error codes can be tricky and one problem can sometimes trigger multiple codes. Suggest trying to clear the codes and then see if they come back. If they come back, then before you start replacing parts, examine the sensors the codes are referencing to ensure they're clean and also functional (use a multi-meter to test). Sometimes knocking off the dirt and cleaning contacts will be all it needs.

Despite the codes, does it run okay? Make sure all your normal service items are in order, like cleaning your air filter and replacing the spark plug, before starting the diagnosis.

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post #3 of 9 (permalink) Old 01-06-2020, 09:34 AM
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Complete a report on the rhino. How many miles/hours? any extras such a CDI box or fuel module? AFR gauge? exhaust upgrade? etc
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08 700 Black Armor SE, resi-shocks, 27" ITP Mudlite XTR, STI single Beadlock 14x7 wheels, JBS 734, Carillo crank & Rod, Viking Cam & inj,MSD, 4pt harn, Viper 4500 winch, Unleashed sheave, JBS 18 gr OD weights & purple spring(greased), Innovate AFR Gauge,Rigid Dually,2 batts with man switch, 6"chopped cage, Mishi rad
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post #4 of 9 (permalink) Old 01-06-2020, 05:04 PM Thread Starter
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Originally Posted by jimclemjr View Post
Complete a report on the rhino. How many miles/hours? any extras such a CDI box or fuel module? AFR gauge? exhaust upgrade? etc
Totally stock. Under 320 hours total. No extras, no AFR gauge. If there've been any mods such as CDI I haven't discovered them yet, and they weren't disclosed when I bought it. Other than seeming to run rich, it starts and drives and hauls fine
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post #5 of 9 (permalink) Old 01-06-2020, 05:07 PM Thread Starter
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Originally Posted by HighDezRhino View Post
Despite the codes, does it run okay? Make sure all your normal service items are in order, like cleaning your air filter and replacing the spark plug, before starting the diagnosis.
Thank you! It does run OK other than seeming to run rich. We've probably put over 50 hrs on it since we bought it, it works every day (around 320 total hours now). It was a low hours, garage stored machine that the previous owner used to plow snow (city driveway, so not too much work).

I checked the air filter and it still looks new - but haven't changed the plug yet. Will do that and reset the codes, thank you!
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post #6 of 9 (permalink) Old 01-07-2020, 07:37 AM
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Quote:
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Quote:
Originally Posted by HighDezRhino View Post
Despite the codes, does it run okay? Make sure all your normal service items are in order, like cleaning your air filter and replacing the spark plug, before starting the diagnosis.
Thank you! It does run OK other than seeming to run rich. We've probably put over 50 hrs on it since we bought it, it works every day (around 320 total hours now). It was a low hours, garage stored machine that the previous owner used to plow snow (city driveway, so not too much work).

I checked the air filter and it still looks new - but haven't changed the plug yet. Will do that and reset the codes, thank you!
You bet. Don't forget to ensure the air filter is oiled up in addition to being clean.
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post #7 of 9 (permalink) Old 01-07-2020, 08:52 AM
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Do a check on your heat sensor and the resistance at different temps. You do not show where you are at but if its real cold there, the ECU will send a rich mixture signal to the fuel injector. If you need the location of sensor, values and procedure it is in the service manual. If you do not have the service manual, do a search and it is available on this site for free somewhere.
You may need to use a piece of winter cardboard in front of the radiator, if it's real cold where you are.

08 700 Black Armor SE, resi-shocks, 27" ITP Mudlite XTR, STI single Beadlock 14x7 wheels, JBS 734, Carillo crank & Rod, Viking Cam & inj,MSD, 4pt harn, Viper 4500 winch, Unleashed sheave, JBS 18 gr OD weights & purple spring(greased), Innovate AFR Gauge,Rigid Dually,2 batts with man switch, 6"chopped cage, Mishi rad
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post #8 of 9 (permalink) Old 01-11-2020, 12:04 AM Thread Starter
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Quote:
Originally Posted by jimclemjr View Post
Do a check on your heat sensor and the resistance at different temps. You do not show where you are at but if its real cold there, the ECU will send a rich mixture signal to the fuel injector. If you need the location of sensor, values and procedure it is in the service manual. If you do not have the service manual, do a search and it is available on this site for free somewhere.
You may need to use a piece of winter cardboard in front of the radiator, if it's real cold where you are.
Thanks, the air temp sensor seemed to be working accurately. It hasn't been too cold here yet, just below freezing - and it seemed to be running rich before the winter too. I ordered some new spark plugs, I will do some more cleaning and see if it improves.
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post #9 of 9 (permalink) Old Today, 03:50 PM
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Also check the water temp sensor as sell as make sure thermostat is getting it to normal operating temp.

08 700 Black Armor SE, resi-shocks, 27" ITP Mudlite XTR, STI single Beadlock 14x7 wheels, JBS 734, Carillo crank & Rod, Viking Cam & inj,MSD, 4pt harn, Viper 4500 winch, Unleashed sheave, JBS 18 gr OD weights & purple spring(greased), Innovate AFR Gauge,Rigid Dually,2 batts with man switch, 6"chopped cage, Mishi rad
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