What kind of problems does a Polaris Ranger 570 normally have? In this blog, we’ve outlined all the most important things you should watch for when you’re in the market for a Polaris Ranger 570. In the rest of the article, we’ll discuss every single problem in detail. Furthermore, we’ll tell you how to identify it, fix it and how much it costs to fix. Read on!
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1. Starting Problems
You may at times experience starting issues with your Polaris Ranger 570. For example, a customer reported that,
“When the compression in my 570 builds up, it will occasionally stop turning over. So, I have to “jog” the key 5 or 6 times to get it to roll over again. I topped up the original battery with purified water, yet it still happens now and then. I’m considering replacing the battery with one with a higher CCA rating.”
This is a common issue with the 570. It often occurs because the battery doesn’t have enough amps to muscle the engine through the compression stroke. Generally, here are some tricks that can help diagnose the starting issue. Start by ensuring the run switch is turned on, the Ranger is in neutral, the battery is in good working order and completely charged, and the solenoid clicks when you turn the key.
- If there is no clicking, check the power to the solenoid from the key switch. If there is none, examine the switch.
- If the switch is ok, meter the solenoid connections while turning the key and ensure you should have 12 volts on both sides. If not, clean both terminals, reconnect the wires, and retest. If the problem persists, it means the solenoid is defective. Replace it.
- If the solenoid is fine, measure the voltage at the starter motor. Test for continuity between the wire lug on the starter and the non-powered solenoid lug. If there is continuity, connect a jumper cable to the battery positive terminal and the starter motor lug.
- If the starter motor doesn’t turn, then you remove it and rebuild it
- If the starter motor turns, examine if the spark plug produces a powerful spark. If not, then there is an ignition issue.
- If the ignition is great, then check the fuel system. Pull the fuel line and start the engine to see if gasoline is flowing. Check blockage in the fuel and air filters.
- If it doesn’t start until the motor is warm, it’s probably because there’s water in the starter.
Vapor Lock issues may also cause starting challenges when your machine is warm. You can solve the problem by using heat wrap to insulate the fuel lines. You may need a new pump and ECU flash in some circumstances. Wooden clothespins placed on the gasoline rail may also help.
2. Fuel Pump Problems
Many Polaris Ranger issues arise from faults with the machine’s fuel and intake systems. You may have a fuel-related problem where your Ranger struggles to start, sputters, backfires, or even shuts down while driving. A malfunctioning fuel pump is one of the main problems. The fuel pump usually wears out, and the PSI declines from the 39-psi factory value to the low 30s.
When your pump is failing, your Ranger is a lot less fun to drive because you experience sluggish upper RPM, a decrease in peak speed, and poor acceleration. A malfunctioning fuel pump can also cause severe damage to your engine by not supplying enough fuel. Your engine will run lean if it does not receive enough fuel. This generates heat in the combustion chamber, which might lead to detonation. The extreme heat will melt a hole in your piston in the worst-case situation.
Install a fuel pressure gauge at the tank outlet and test the fuel pump pressure. When testing, it is vital to rev your engine because the pressure will often be good at idle but not at higher RPM: it may be losing prime. The pressure may appear alright when the fuel pump is cold, but it may drop when the pump gets heated. So, you must run your fuel pump with a gauge to measure fuel PSI during regular operation to adequately test its performance.
Also, check the vent hose on the tank, and clean it regularly. Often, clogged fuel tank vent lines and other simple fuel system issues are overlooked.
OEM fuel pump replacements cost around $179.99. The Pump replacements come with color instructions and everything you will need to get started. Usually, you can install it in 30 minutes with simple hand tools. There is no need for wiring because the pump plugs right in.
Also read: 5 x Most Common Polaris Fuel Pump Problems!
3. Engine Problems
The 570 ProStar engine powers the Ranger 570. It is a compact single-cylinder, 567cc engine giving 44 horsepower that serves the Ranger, Sportsman, Ace and RZR platforms and other projects. The Ranger 570 EFI is arguably among the all-time best engines in the Polaris lineup.
If you maintain your Ranger 570 well, you should have few difficulties. However, your UTV can start to act up, for example, you experience a power loss, a miss, a backfire, or an overheated engine. You may do some basic troubleshooting to figure out what’s wrong.
- Examine the spark plug. Remove the spark plug from the cylinder head and replace it in the boot. Restart the engine and check for a spark on the electrode on the spark plug to determine whether it is working well. If the plug isn’t sparking, replace it. Check or replace the coil if not working.
- Investigate the fuel system. Remove the fuel line and crank the engine to check if the engine is getting gas. If it is, look for a clog in the fuel and air filters. Also, ensure that the gas tank is full.
- Check for water in fuel and air filters.
Try cleaning the engine exterior and the radiator screen and core in case of overheating. See your dealer if it persists. Consult your dealer on worn or defective spark plug wires and mechanical failure.
4. Transmission Problems
Often, transmission problems occur due to wear and tear on the belt, drive clutch defect, or an alignment issue.
For example, a customer reported that,
“I’ve got a Ranger 570 EFI (EPS) with 14 hours on it. It’s been experiencing a transmission problem recently. It acts as though something is caught beneath the vehicle, as if it is binding up. When it happens, it’s incredibly unsettling, yet it appears to happen at random”.
Going from forward to reverse appears to be more common than going backward. When you step on the gas, the engine slams to a halt. It will come to a complete stop if you take your foot off the gas pedal. The problem seemingly resolves by shifting back into reverse, stabbing the gas, and then shifting back into forward. Until it happens again. It can occur in 2WD, 4WD, or Turf mode, on the road or in the woods. ”
You will also experience transmission problems if the engine is idling too high, or the belt isn’t loose enough due to the drive clutch. Fine-tune the engine and replace or adjust the belt. If it is misaligned clutches, you need to align it to resolve the transmission issue.
5. Shifting Problems
A customer reported,
“Several weeks ago, I purchased a Ranger 570. Overall, I’m pleased with the quality so far; however, there is one problem. If it makes sense, the shifter tends to become stuck in neutral. When I shift to reverse and the screen reads R, the engine sometimes revs up as if it were still in neutral. I don’t enjoy the sound of clanking. It appears that it is engaged in reverse in two places, but only one of them moves it. In Low gear, it does the same thing, although it’s less common”.
It may have something to do with the park feature. When you release the park feature, smoothly switch to neutral and then reverse. There may be a bind at first, but switching to neutral first helps release the bind and allows for better gear selection. All you need to know is how the transmissions and park feature operates. The combination of inclines and transmission park creates a bind.
Also, the problems affecting transmission can cause shifting issues.