Tps might of went out...

My 11 rmk 800 stopped running on me and I have a feeling it could be my tps so I'm wondering how I can test to see if it went out?

Back off idle screw until throttle bodies are fully closed. Then feed 12V into the "ECM PWR" connector above the primary clutch. Orange is +, brown is -. Next, check for 5 Volt signal at the ECM. You'll find this at cavity #24 on the lower ECM plug (RED/WHITE wire- back probe with a paper clip with connector plugged in to ECM). You must have 4.99-5.01 V there.

Now check the signal wire coming from the TPS at the ECM- cavity #7 (AQUA wire, again, back probe with a paper clip). With the throttle bodies fully closed, it should be 0.700 volts. If it's out, adjust the TPS. Then set idle to 0.94 volts by adjusting the idle screw.

thanks ill try it out. Also wondering if my clutch weights were getting stuck would this cause the sled to bog down and shut off? because I have team adjustable weights and I noticed they was rubbing on the side of one of the screws....

If I was going that far I would verify that the throttle bodies are in sink (or even) to start with. Mine were not, just a thought.

mntmaster said:

If I was going that far I would verify that the throttle bodies are in sink (or even) to start with. Mine were not, just a thought.

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This is funny when you read the manual.... Manual basically says that if they aren't synched, or if you suspect they are out, to replace them!!!


Read that the other day and found it completely stupid. These shouldn't even be produced without a way to synch them at any given point...

Also, when you power the ECM plug as mentioned above, you can check reference voltage (5.0vdc) at the red/white wire on the clear connector that hangs down above the head (that is not used or plugged into anything). Keeps you from back probing two very tight spots on the ECM.

Also, if u do use a paper clip, I hammer one down, and file it to a very fine smooth point, to decrease chance of damage. A sewing needle can be used for back probing, but will give you very little room to attach a test probe.

You're voltage readings may be off a bit, so this check may be helpful, but usually when TPS go bad, the potentiometer within is what goes bad, so you'll definitely want to do a analog sweep test of the TPS as well.