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AEM AFR problem

revster

TY 4 Stroke God
Joined
Aug 18, 2004
Messages
1,752
Location
La Salle MB
Country
Canada
Snowmobile
2009 Yamaha Nytro RTX SE
Hey Guys,

Last ride my AFR seems to have quit. It is still displaying numbers however it is pretty much stuck. The numbers almost didn't change at all pretty much stuck at 13.6 occasionally moving a couple decimal points. Normally the it is all over the place when I am on and off the throttle and reacts very fast.

I was thinking that my probe/sensor has quit. Do the above symptoms sound like a toasted sensor? Or should I be looking at something else? I did have the tank off a short time ago and was wondering if I might have damaged a wire.

Thanks for any feedback you guys can provide.
 

Make sure that the sensor didn't become unplugged. It will act that way if it has become unplugged from the main harness running to the gauge (or make sure the main harness from the sensor is still seated fully in the back of the gauge as well).
 
Srxspec said:
Make sure that the sensor didn't become unplugged. It will act that way if it has become unplugged from the main harness running to the gauge (or make sure the main harness from the sensor is still seated fully in the back of the gauge as well).

ok thanks Allen that is possible since I had the back half of the sled apart before it acted up. I'll check that out.
 
Mine acted up a while ago. I recalibrated it, and it has worked fine for about 1200 km's.

However, last week it started acting up again. So we'll see if it still works.
 
No recalibration needed for the AEM setup. Do the suggested test and check wiring.

Innovate widebands seems to need recalibration often and its a PITA to wire in the correct way. I have one on the shelf and theres where it works best...
 


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