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99 polaris 335 low end vibration giving it gas it goes away then when idling back down vibrates like hell

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My 2010 Polaris 330 trailboss will idle all day but when you give it gas it wants to bog down and die


My Polaris 500 did same thing. Had to
get a carb rebuild kit. Small plastic ring wore out and caused problem.

Dec 29, 2016 | Polaris ATV

1 Answer

1999 Sportsman 335 4x4. Why doesn't it seem "right"?


Make sure it is the recommended size. Can you adjust the tension? Try some belt dressing, it's a spray that makes belts grab better. Good luck!

Feb 29, 2016 | Polaris ATV

1 Answer

600 looses 4 wheel drive and display goes blank.


Cud b a bad module. First test any relay. A wire cud b loose tu....vibration.

Jan 02, 2016 | Polaris ATV

2 Answers

Tranny works, shifter wont shift the gears. how to fix?


My 2005 Polaris ATP 500 requires I depress the right foot brake while shifting into reverse or down into low range. Perhaps some adjustment on the foot brake to make this work. Also check linkage to make sure it is not binding. Others say if the idle speed is too high, you may not be able to shift. Try shifting with the engine off to see if it goes into the gears, using the foot brake. If yes, try again while at low idle speed.

Mar 25, 2015 | Polaris 2004 Sportsman 500 H.O

1 Answer

Polaris Scrambler won't idle when moving


If a tune up doesn't help, rebuild the carb. the ethanol in gas ruins the gaskets.

Sep 08, 2014 | ATVs

1 Answer

I have a 98 polaris 425 magnum it idles good but as soon as i give it throttle it wants to die. is this an electrical problem or a fuel problem


turn idle/lean down a bit and see what happens, then the gas may have water,timing, carb could be a few things

Aug 11, 2014 | ATVs

1 Answer

Service codes for 03-04 polaris 700 twin


Here is the lowdown on Polaris Sportsman 700-800 T-Bap wiring:

Symptoms of broken Temp/Baro sensor wires:
1. The ATV will run very erratic at idle.
2. The "CHECK ENGINE" will sometimes come on.
3. Diagnostic codes 41 and or 45 will be present.
4. Fuel mileage will be poor.
5. Exhaust will smell really rich. Sometimes even black smoke can be seen from it running so rich.

How to test if the Temp/Baro sensor wiring is broken:
1. Turn the key switch on and off 3 times leaving it on the 3rd time. This puts the ECU into diagnostic mode. If codes are present their numbers will be displayed on the instrument cluster. When all codes have been displayed "End" will appear on the cluster.
2. Remove the seat and locate the sensor on the air intake tube. Unplug the wiring to the sensor by pressing down on the tab on the top of the connector. DON'T PULL THE CONNECTOR BY IT'S WIRES!!! Pull back the vinyl tubing that covers the 4 wires going to the connector. Gently pull on each wire with your fingers. The wire should have no stretch and feel solid. All the wires should feel the same. If one or two of them feel weak and stretchy chances are you have a broken wire. Is what happens is the wire breaks inside the insulation so it appears to still be connected.

Why do the Temp/Baro sensor wires break in the first place?
1.The problem with the current Polaris wiring is too short and Polaris used 7/32 stranded 22AWG wire. This wire has a very low strand count and should not be used in applications where vibration occurs.
2.The next problem is the mounting location of the sensor it is in a vibration prone spot on top the air intake tube going from the air box to the throttle body. Next time you're bored take the seat off and rev it up in neutral. That intake boot and sensor vibrate to the point where it looks blurry. The combination of these engineering flaws causes the cable to break in a big hurry.

The Polaris repair kits keep breaking. Why?
1. The replacement kits from Polaris use the same 7/32 strand wire that can't withstand vibration.

find a heavy duty one on the internet or ebay................

May 29, 2014 | ATVs

1 Answer

I HAVE A 1999 POLARIS 335 SPORTSMAN STARTS FINE WHEN I TRY TO ACCELERATE THE QUAD BOGS FEELS LIKE ITS GOING TO STALL BUT THEN GOES BUT NOT AT FULL POWER AFTER RELEASING GAS THERE IS A LOUD BACKFIRE ...


carbon on the plugs indicates flooding
the backfire indicates fuel being ignited in the exhaust
have the carby /fuel system professionally overhauled

May 27, 2017 | Polaris ATV

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