SE MT | bigcountry - 1/10/2019 16:29
Ranger starts and runs for a little while but surges and stalls like you are running out of fuel. Eventually kills. I don't see a filter in line, Is there one in the tank or what else could cause this?
That's not usually typical of fuel starvation on those, but since you asked, there is a fuel fitler, but it's in the tank. The sock on the bottom of the pump isn't the fuel filter, it's more of a fuel strainer. The filter sits directly above the pump and is cylindrical in shape, You can take it apart and use some brake cleaner and compressed air to clean it out, clean side to dirty side..
If it were me, I'd forget about the fuel pump till you put a fuel pressure gauge on it. Take off the little black hose on the drivers side of the fuel rail, and slip on a pressure gauge with some rubber hose and clamp it. Start the engine and watch the gauge. You should have about 45 psi at all times. if it drops below 42, you should just replace the pump.. At one time we owned 4 of these 800s at once. In a combined 70K miles, I never saw a fuel filter plug and cause loss of power/running problems, but I did replace a fuel pump from time to time.
Quantum Fuel systems offers replacement fuel pumps/socks, as well as complete assemblies for much less than polaris.
I'd say what's more likely is that you having a sticky idle air control valve, or some wiring that chaffed going up to the T-map or TPS sensor.
The idle air control valve is on the passenger side of the throttle body and is held in with 3 phillips screws. Remove those screws and the valve. Clean and rinse with brake/carb cleaner, and re-assemble. That valve sticking causes alot of the racing and poor idle conditions on these engines.
On the harness, most issues happen in the harness below the throttle body. Sometimes the wires can rub on the thottle body and rub through, so cut the zip ties and inspect them. Follow them down to the main harness behind the engine and pull the loom apart to inspect for further damage. The vibration of these engines can cause the loom to wear right through the wires.
Also, are you getting a check engine light? |
2012 Polaris Ranger 800 fuel Filter?
