2014 Polaris Pro Rev Limited?

[RMK900Tractor]

I am working to solve an issue with a 2014 Polaris Pro RMK 800

The sled acts like it has a rev limiter that starts just around clutch engagement rpm and the frequency increases as the throttle increases.

See videos:

https://youtu.be/HOagT8EcQGs

https://youtu.be/gZqbhkBADOI

I just adjusted the TPS sensor after reading a large number of posts.
Throttle body closed: .710 V
Idle: .940 V

New fuel filter - SPI aftermarket

Checked all electrical connections

Tried 2 sets of NGK spark plugs

Checked handle bar kill switch (unplugged)

Checked stuck throttle switches in throttle block (unplugged the sled will not go over idle)

The one thought I have is the TPS sensor could be bad even though i was able to set it.

I purchased one of those harnesses that plug into the TPS sensor harness that provides 3 wires to measure voltages. (supply voltage, ground, and TPS output).
- The harness coming from the ECU has the correct supply voltage (4,998v) when grounded to the chassis. However, when I ground to the adapter ground wire from the harness (from ECU) i only get 4.123v. I was expecting when the TPS sensor was connected in the circuit the supply voltage would still read 4.998v. This was confusing.

I am wondering if the TPS sensor is bad?

Any thoughts??

 

[knocksum]

Throttle cable too tight TSS? Adjust at the handle bars.

 

[RMK900Tractor]

Throttle cable too tight TSS? Adjust at the handle bars.

Good suggestion,

I had already adjusted that so not the issue.

 

[RMK900Tractor]

ttt

 

[pulltype_polaris]

That sure acts like the security system activated but it shouldn't rev high enough for clutch engagement. Think 3800 is where they allow up to.

 

[RMK900Tractor]

That sure acts like the security system activated but it shouldn't rev high enough for clutch engagement. Think 3800 is where they allow up to.

Thanks for the suggestion, I never activated that but will check to see if display is indicating this.

 

[rick5150]

Are you getting a check engine/codes for it?
Sounds very similar to mine when I had to replace my MAP sensor.

 

[RMK900Tractor]

Are you getting a check engine/codes for it?
Sounds very similar to mine when I had to replace my MAP sensor.

No engine codes - that's what is confusing.

I tried another MAP sensor off a buddy sled but no luck.

Thanks for the suggestion though.

 

[MTN Powderhound]

Buddy had one doing similar stuff but at 6500. No codes. After replacing a few parts, it ended up being a piece of metal got into the stator and messed around in there. The coils readings were within specs before he pulled it apart. Could check there if at wits end.

 

[RMK900Tractor]

I put the hood back on and now the display is reading code 51 4. Looks like TPS voltage low.

 

[RMK900Tractor]

I put the hood back on and now the display is reading code 51 4. Looks like TPS voltage low.

The code was generated due to me forgetting to hook the ECU wire back up.

I decide to still order a new TPS sensor - $238!!!

Also, I did install a set of reeds left over from a turbo project. I got them from Bryce at Turbo Performance. I am wondering if they could cause this issue????

 

[NapaMatt]

YES REEDS is the Answer!!

will bring down ur idle!

or they are chipping away!!

 

[RMK900Tractor]

The code was generated due to me forgetting to hook the ECU wire back up.

I decide to still order a new TPS sensor - $238!!!

Also, I did install a set of reeds left over from a turbo project. I got them from Bryce at Turbo Performance. I am wondering if they could cause this issue????

I just ordered a set of Boysen reeds to try - will be here tomorrow.

 

[RMK900Tractor]

I just ordered a set of Boysen reeds to try - will be here tomorrow.

Boysen reed valves did not help.

Changing the TPS Sensor today

 

[RMK900Tractor]

Got if resolved.

Turned out I put in the wrong MAP sensor.

I have a lot of parts sitting around my shop and put in a turbo version. Once I put in a stock one it ran perfect.