2009 MXZ renegade 800r problems - Snowmobile Forum: Your #1 Snowmobile Forum

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post #1 of 2 (permalink) Old 04-06-2017, 09:15 PM Thread Starter
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2009 MXZ renegade 800r problems

Hey guys, picked up a 2009 MXZ renegade 800r. And now I've ran into a problem. Was a buddies sled. When I test road it the sled ran great. Now that it's home I now have a 4 beep check engine light and it acts like it is idiling on mag cylinder. I've checked compression, 148 pto 150 mag. Checked the Rave valves for movement and they both are moving. Went through the carbs. And I just can't seem to shake this problem. Could the check engine light cause a limp mod like this? Newest sled I've ever owned and I'm lost now.
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post #2 of 2 (permalink) Old 04-11-2017, 01:53 PM
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Yes, the engine limp mode can cause the rough idle and lack of oomph.

First thing to check is the DESS key. Make sure it is on good and tight when you start the machine. Even hold it in place while starting.

The next thing to ask your friend is did he give you the right DESS key? (i.e., does he own multiple DESS machines and got it screwed up)

From there, getting a code reader and finding out what the computer is thinking is wrong would be next.

2015 Skidoo Renegade BC 600 Etec
1996 Skidoo Touring E 380F (sister's)
1995 Skidoo Summit 583 LQ
1985 Skidoo Tundra 250F
1999 Arctic Cat Jag 340F
1999 Arctic Cat Z 370F (son's) - needs track

Currently working on:
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