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Discussion Starter · #1 ·
Okay Rzr experts--Here's a couple of questions.

Installed an Opti 600 filter and in the process removed the throttle body, cleaned due to the dirt and grime ingested by the stock filter and re-installed.

Fired up the machine, ran rough--seems to be due to fuel however it acts like it is running lean, high engine temp, back firing & sputtering as well as stalling out at low idle.

--Could the throtle postioner (black housing that operates butterfly) be off alignment and cause this?

I removed a portion of the housing for clearance of the sensor, removed the sensor from the port--ran the same, disconnected sensor and ran the same?

I would not assume bad fuel would cause a lean condition--only run poorly but the heat from a run around the neighbor hood was more than any hard run at a track or trail.


Any thoughts would be appreciated?
 

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The service manual says do not remove the TPS and in most cases that's the best advice. They are calibrated on the throttle body on a flow bench and there's no way to duplicate this at home. You can get close using the steps & voltages in the manual but you'll likely still end up with less than ideal calibration.

If you suspect the T-BAP sensor you can try spraying throttlebody cleaner on the tip of the sensor to see if cleaning it helps. Also check the harness leading to the sensor for pinched, worn or cracked wires.
 

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Discussion Starter · #4 ·
Thanks guys, took the throttle body to the local dealer, calibrated and installed last night--ran like a top.
 
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