Need Help ASAP, 2006 RMK Cutting Out???

[bisonboy02]

I have a 2006 900 RMK. I went out on my first ride today since a new motor was installed.
When at a stand still and you hit the throttle it pulls hard for around 2 seconds then just seems to bog out. If you ease into the throttle it seems to work and pull to operating RPM and speed. If I ease into it to about half throttle and then hit it it also seems to bog out and won't pull RPM's.
It is a complete new motor from Polaris, it has new throttle bodies, intake boots, reeds, injectors, ecu, stator, flywheel, fuel filter, coils, FBF throttle cable, sparkplugs, belt and fresh fuel.
There is no check engine light coming on.
Could a exhaust bellows cause this? I did notice when I fired it up today it seemed to have a puff of exhaust come from the small hole on the PTO side plastic cover. There is no oil residue around it. The ves assemblies are also new.

Anyt help would be great.

Thanks

 

[frozen north]

Here is what I would check:
I kinda had the same problem on mine.
It would do the same exact thing yours would do.
Check the throttle lever- at the handlebar- the small but long bolt that attaches the lever.
Mine was way loose-thus activating the cut out switch which is built into the lever assy. So- if you ease into it- no problem- If you slam the switch- the lever moves over and touches the cutout.
Recommend- tight the nut on the bottom a little and thus it should work.

 

[bisonboy02]

Thanks, I'll check that out.
When I hit it from a idle it doesn't die, it still runs just not good. If I back off the throttle it seems to cut back in and go.

 

[jtpolaris]

Was the tps set?

 

[bisonboy02]

TPS was not set. I guess it was setg at the factory. It is new along with the Throttle bodies. It also came with new harness from the ecm to the TPS.
Should I check the setting on the TPS?

 

[bisonboy02]

I just hooked up my TPS tester.
It shows 4.00 volts at wide open and 0.95 at idle.
I see that the spec should ne .93v, would that make much of a differance?

 

[bisonboy02]

Anyone else have any ideads?

 

[mountainhorse]

Sounds like the kill switch or a wire rubbing thruough or a loose connection

 

[bisonboy02]

I checked the throttle level switch, it is working properly.
It isn't killing the engine when this problem is happening. When it is bogging and I back off the throttle it cleans up until I hit the throttle again.
I checked for grounds at the air and exhaust sensors and that was ok.
I checked the fuel pressure at idle and it was at 115psi. When I rev it up my gauge was fluctuating between 100-125, but this wasn't a oil filled gauge.

 

[mountainhorse]

What exhaust pipe and can are you running?

Have you checked the spark plugs since you have been having this problem...paying particular attention to the color and also if the boots and contacts are in good shape??

What airbox are you running?

Is it cutting out, or bogging?? one is like someone playing with the kill switch while you drive.. the other is like dragging an anchor?

 

[bisonboy02]

It is a stock pipe with MBRP can.
Spark plugs have been replace 3 times, new coils and boots
SLP airbox
Bogging, it almost seems like a cyl is cutting out. If you let go of the throttle when it happens and come back into the throttle it sometimes works for a few seconds.
I just went out for another test drive, I had the throttle switch, kill switch, key switch and teather disconnected and it is still doing it.
I eased into the throttle until top speed, then I did 2 passes of approx 1000 feet with no problems. On the third time it started over again.

 

[bisonboy02]

I just finished removing the fuel tank and inspected all connectors and wiring around the ECU, everything looks good. Chassis ground is also good.

 

[sw]

If all previous troubleshooting can be considered eliminated as problems then I would look to the fuel filter being clogged/dirty, anything efi likes clean filters, your description sounds just like my Chevy PU, then I know its time for a filter change-also have 05 900 switchback. Good hunting!

 

[bisonboy02]

There was a new filter installed at the time the motor was installed. Maybe max 5 miles on it.

 

[IceCap]

I would take the MBRP can off and try your stock one. We had all kinds of runabilty problems with aftermarket cans.
One reason I suspect the can...... you mention it started to act up after two 1000ft pulls means pipe is getting to hot.
The only other thing I would suspect is the ECU..... you mention it is a new one.
Do you still have the old one to try?

 

[bisonboy02]

It would start acting up as soon as it was pulled off the truck. I eased into the throttle up to top speed the did 2 full passes with no problems, tried a third and acted up again.
I don't have the stock can anymore.
Yes, the ECU is new along with the wiring from the ECU.

 

[Dogmeat]

I have a 2006 900 RMK. I went out on my first ride today since a new motor was installed.
When at a stand still and you hit the throttle it pulls hard for around 2 seconds then just seems to bog out. If you ease into the throttle it seems to work and pull to operating RPM and speed. If I ease into it to about half throttle and then hit it it also seems to bog out and won't pull RPM's.
It is a complete new motor from Polaris, it has new throttle bodies, intake boots, reeds, injectors, ecu, stator, flywheel, fuel filter, coils, FBF throttle cable, sparkplugs, belt and fresh fuel.
There is no check engine light coming on.
Could a exhaust bellows cause this? I did notice when I fired it up today it seemed to have a puff of exhaust come from the small hole on the PTO side plastic cover. There is no oil residue around it. The ves assemblies are also new.

Anyt help would be great.

Thanks

That's a tough one ... The first time mine did that, it was a bad TPS sensor ... the second time mine did that, it needed a new ECU

Good luck

 

[guidoxpress]

check yur TPS first...set it, and if you have a new TPS harness your fine, if its an old harness get the updated TPS harness as well ($35) (pn# 2203165)

start simple before you get too deep into it..

 

[bisonboy02]

Could it be the fuel pump?
I checked the pressure at idle and it was 115psi, I couldn't really check it while it was acting up as I don't have the proper hose and gauge.
Feels almost like when a fuel pump is starting to go on a car, idles good and runs good until it needs the extra fuel, then the pump can't keep up.
Has there been problems whith the fuel pumps on these?

 

[BIGGDAWG]

sounds to me like it is starving for fuel so it is a fuel pump or ecu problem most likely.

get a fuel pressure tester with a long enuff hose to run to the handle bars and tape it or zip tie it there so you can watch it when you accelerate. if it drops below 115 then you found the problem if it stays above probably the ecu. do you have your old ecu to try?

also just because a filter is new don't mean it is good. take it off and blow through it. there should be no restriction. eliminating things just because they are new can sometimes bite you in the butt. i am talking from 21 years of experience as an auto technician. i have had tooo many new parts bad that had me chasing my tail.