Cooling System

Many Polaris Ranger Crew owners have experienced overheating in their machines. Whether you’re pulling a heavy load or climbing a steep hill, the harder your engine works, the hotter it will get. And while you may be tempted to run a higher output cooling fan, simpler solutions are out there to keep your engine cool. Cleaning your radiator, for instance, is the easiest way to ensure that your machine’s cooling system will function properly. Similarly, if you run accessories that block the airflow to the radiator, a radiator relocation kit would definitely be beneficial. An ECU tune can also help you fine-tune your control of the radiator fans. You can program them to turn on sooner, run for longer, and make other adjustments to ensure that the optimal temperature is met.

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Non-OEM coolants can also be more effective -- especially if you live in areas where the temperature doesn’t go below zero. You can cut back on the antifreeze or run coolants like Evans Waterless or Water Wetter. These coolants don’t expand like regular coolants and can help keep things a few degrees cooler -- you just have to make sure to follow the directions properly.

One problem with the Crew cooling system is the temp sensor going out or showing a wild range of readings. A few things can cause this, but a common reason is a belt. If your belt is getting worn, it will put your machine into limp mode, but you should be able to shut the key off then restart and be good again. What happens is when the belt gets worn too much, the engine will turn faster than it should. The ECM has a set of parameters programmed in it for engine rpm versus mph, so once your engine turns more rpm then it should at a set mph, the ECM will put the engine in limp mode to keep from causing engine damage. Turn the key off and it will reset until you pass those set parameters again.

In addition to keeping the internals of your Crew cool, you may also want to keep yourself and your fellow passengers cool in the cab. Some Polaris Ranger Crews -- like the Northstar Edition -- come stock with air conditioning units, but other models can be retrofitted with one as well. All you need is the dash kit that replaces the center cup holders, screen, and wiring kit. Some riders have expressed mild concerns about the condenser being mounted in the front instead of under the driver’s side seat like it was in older models, but the best place to mount the condenser is, in fact, the front -- the more air flow the better. The only thing you need to make sure to do -- especially if you ride in a lot of mud -- is to keep the condenser and other exposed components clean. The more mud the higher the head pressure in the AC system.