Join Date: Aug 2019
Feedback Score: 0 reviews
Re: 2012 RZR 4 800 Bogging/Hesitation on Take Off / Acceleration When Engine Cold
Okay all, here's the latest.
I got back into the TPS calibration and set it to 0.750 VDC (WOT) and 2.817 VDC (Idle). To my knowledge, this is within spec. Strange that my readings seem to be backwards from all the other posts and information I've seen. It's supposed to have the lower voltage when idle. Also, I can't explain it, but before when I attempted this, the RPMs at idle shot up to 1900 RPM. This time, some how, I was able to set it without influencing the idle RPMs (they're perfect at 1250).
I reinstalled everything and took it for a test run. No resolve. Did not fix the issue.
I called up the dealership and spoke with them over the phone. Of course, they said it was difficult to diagnose properly over the phone, but it's starting to sound like a clutch problem. I tend to agree that makes sense, because when cold, there's not as much friction to turn the belt, so it might be slipping until 3500 RPM when it gets pinched down harder. When it's warmed up, it grips better.
I'm ready to move on from testing and calibrating the TPS, as I don't think it's a problem in this case. I'm not quite ready to dig into the clutch and the costly repairs I may need to take. At this point, unless anybody else has any great ideas, I'm going to table this until next summer. :-)