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1991 Polaris 350 liquid cooled, overheats, and blowing coolant out of clear tube coming from crank case, and running up under and next to seat.

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1994 polaris 350 liquid cooled 4x4 CANT FIGURE OUT WHY ITS NOT FIREING

Hey Justin, Have you got a new spark plug? Bypass the kill switch,.. Does this unit have a key switch.. If so, bypass it.. This will help..
Polaris atv manuals

Jul 10, 2017 | ATVs

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Why is my 01 polaris 325 magnum getting gas in the crank case?

if you are finding gas in the crank case, the most possible reason there is a crack in the motor case or cylinder wall, or bad ring or cylinder.

Sep 17, 2015 | ATVs

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Have a 2011 polaris 6x6 800 that overheats every time I use it. The coolant will come out the over flow.

The most common causes of a water cooled engine overheating are (1) poor circulation of cooling fluid (bad water pump or stopped up radiator); or (2) inadequate air flow cooling (bad cooling fan); or (3) compression gases entering the cooling system (leaking head gasket or cracked block or head). The first check is to see if air is in the cooling fluid (small bubbles appearing in top of radiator or coolant reserve tank). If so, then #3 is the problem. The second check is to see if the cooling fan (s) is running properly (can feel air flow on output side?). If not check wiring and/or replace fan (#2). The last step is to drain the radiator and engine (turn over engine to allow water pump to empty the block). If additional cooling fluid does not drain out the radiator drain port, the water pump is defective. If the water pump does empty the block, then flush the system with a good flushing agent. Follow instructions on flushing agent bottle. Drain out the flushing agent and re-fill radiator and block with clear water. Run engine as per instructions on flush agent bottle. Drain system again and re-fill with antifreeze (50%) and water (50%). If vehicle is located in a very cold climate, then increase the antifreeze % up to 75% (25% water). Remember, not only does antifreeze help to keep water from freezing, but it also helps to increase cooling ability.

Feb 06, 2015 | Polaris 2011 Ranger 800 6x6

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First check coolant level and correct if low. Sometimes this is all it is. If not, the cooling fan comes on due to a water temp sensor switch. Local auto parts place AutoZone, O'Reilly, Advance can help you find it. Probably bad. The other problem of dead battery is something staying on after car is shut off. Look for aftermarket electronics wired to a non-switched source.

Oct 25, 2014 | Polaris 2005 Ranger 4x4

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What would make the fuse under the seat keep blowing

There has to be a short in the line somewhere in order for the fuse to constantly blow. A wire has rubbed against some steel and is causing the fuse to blow. trace the fuse to the link....such as the lights or rear light and check the socket or wiring for a short.

Aug 03, 2014 | Polaris 2010 Sportsman 90

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

Four wheeler

You will have to get the cooling fan working before you look any further. It may be best to have a coolant system pressure test and a compression test done to eliminate engine fault also

Jul 28, 2013 | ATVs

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Ok where is the tempeture sensor on a freaking Polaris 300 trailblazer !

Trailblazers that I'm familiar with (250's, 400's) they had coolant sensor in the head for the overheat light and another coolant sensor on the radiator to tell the cooling fan to cut on/off.

May 12, 2013 | Polaris 2008 Trail Blazer 330

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