The 2008 Polaris Ranger XP 700 is a utility side-by-side renowned for its powerful 683cc engine, impressive payload, and off-road capability. As with any hardworking UTV, regular wear and tear, age, and demanding use can lead to recurring issues. This guide covers the most frequent problems—with practical solutions—drawn from owner experiences, service bulletins, and Polaris technician advice.
2. Common Engine & Starting Issues
2.1. Hard Starting or No Start
Common Causes:
- Weak/dead battery
- Dirty or corroded battery terminals
- Bad starter solenoid or relay
- Faulty ignition switch
- Old or contaminated gasoline
- Failing fuel pump or clogged fuel filter
- Faulty ECM (Engine Control Module)
Solutions:
- Check and fully charge the battery (should read at least 12.6V). Replace if it fails to hold charge.
- Clean battery terminals with a wire brush; use dielectric grease.
- Test and, if needed, replace starter relay, ignition switch, or solenoid.
- Replace old fuel; use fuel stabilizer if storing for long periods.
- Check if you can hear the fuel pump priming—if not, test pump and relay; replace as necessary.
- Replace the fuel filter and inspect the lines.
- If all else fails, consider ECM diagnosis/replacement (rare, but possible).
2.2. Engine Cutting Out, Surging, or Running Rough
Possible Causes:
- Dirty or faulty throttle position sensor (TPS)
- Vacuum leaks—intake boots, hoses
- Failing fuel pump or dirty injector
- Bad spark plug or coil
- Clogged air filter
Solutions:
- Clean or replace the TPS; check for error codes with an OBD scanner.
- Inspect and replace cracked or leaking intake boots and vacuum hoses.
- Perform a fuel pressure test; change fuel pump/filter as needed.
- Replace spark plug with recommended NGK plug, check coil resistance.
- Replace or clean the air filter—especially after dusty use.
3. Fuel System Problems
3.1. Fuel Pump Failure
Symptoms: Long crank times, engine stalls, won’t start, no fuel at injector.
Cause: Factory pumps and filters are known weak points in 2008 models.
Solution:
- Replace the fuel pump (upgrade to a newer OEM or high-quality aftermarket model—many 700 owners opt for the Quantum or All Balls brand pumps).
- Change the fuel filter and flush the tank if dirty.
3.2. Fuel Tank/Vapor Lock Issues
- On hot days, vapor lock due to clogged tank vent or kinked lines will cause stalling/fuel starvation.
- Solution: Ensure the vent line is not blocked/kinked and that the gas cap vent functions.
4. Electrical & Charging Problems
4.1. Battery Not Charging / Rapid Discharge
Common Causes:
- Bad voltage regulator/rectifier
- Failing stator
- Corroded main ground or electrical contacts
- Accessories draining battery (lights, radios, etc.)
Solutions:
- Check voltage at battery terminals with engine running (should read 13.8–14.5V).
- Replace voltage regulator if charging is low (<13V) or erratic.
- Test stator resistance per service manual; replace if out of spec.
- Disconnect aftermarket accessories to test for parasitic drains.
4.2. Intermittent Electrical Issues
Symptoms: Random dash lights, flickering display, no crank/no start at times.
Causes:
- Loose or corroded wiring harness connections (especially under dash or near ECU)
- Failing ignition switch
Solution:
- Go through all major connectors, clean with contact cleaner, and secure.
- Test/replace ignition switch if intermittent operation.
5. Transmission & Drivetrain Problems
5.1. Hard Shifting or ‘Stuck-in-Gear’
Causes:
- Misadjusted shift cable
- Worn shift linkage bushings
- Clutch not fully disengaging (Primary/secondary clutch wear or belt issues)
- Low or dirty transmission fluid
Solutions:
- Adjust or replace the shift cable and lubricate linkages
- Replace bushings if excessive play.
- Inspect/belt—replace with OEM or high-quality equivalent if glazed, frayed, or stretched.
- Service the clutches—clean with compressed air; service/replace if needed.
- Change transmission fluid per interval, use only Polaris AGL or recommended synthetic.
5.2. 4WD Not Engaging
Causes:
- Faulty AWD switch
- Bad front differential actuator
- Broken/dry CV axles/shafts
- Corroded connector at the front diff
Solutions:
- Test and replace the switch or actuator as needed.
- Grease/replace CV axles; inspect boots for tears.
- Clean/secure wiring at the front differential.
6. Cooling System Issues
6.1. Overheating
Common Causes:
- Clogged radiator (mud, grass, debris)
- Low coolant
- Failed thermostat
- Cooling fan not working (burned out or bad relay)
- Blown head gasket (rare but possible on high-mileage engines)
Solutions:
- Thoroughly clean radiator fins (from engine side outward).
- Refill or flush coolant—only use the correct Polaris-spec type.
- Test and replace the thermostat and fan relays/motors as needed.
- Watch for milky oil or loss of coolant—signs of a possible head gasket failure.
7. Steering & Suspension Problems
7.1. Wandering Steering or Excessive Play
Causes:
- Worn tie-rod ends, ball joints, A-arm bushings
- Loose steering rack mounts
Solutions:
- Replace all worn joints and bushings—these are wear parts and common at 2,000+ miles/hours.
- Retighten/replace steering rack mounting bolts.
7.2. Rough Ride / Sagging Suspension
- Inspect shock absorbers for leaks or weak springs.
- Replace shocks or springs that have lost tension.
8. Brake Problems
8.1. Weak Brakes, Squeal, or Grabbing
Common Causes:
- Worn out brake pads or discs
- Dirty/contaminated brake fluid
- Air in hydraulic lines
Solutions:
- Inspect/replace pads and rotors as needed.
- Flush and bleed brake fluid per schedule (use DOT 4 or as specified).
- Check for stuck calipers and lubricate slides.
9. Body & Miscellaneous Issues
9.1. Doors/Latches, Bed, or Dump Mechanism Sticking
- Lubricate all latches, clean moving parts, and adjust/replace bent parts as needed.
9.2. Squeaks and Rattles
- Tighten body panels, use rubber bushings/isolation pads as needed.
10. Recalls and Service Bulletins
- TPS Recall: Some 2007-2008 models were recalled for TPS issues causing hard starting/running.
- Fuel Line Routing: Check with your dealer for any open service bulletins on electrical, fuel, and brake line routing for your VIN.
11. Maintenance Tips & Trouble Prevention
- Change engine oil/filter every 50 hours or annually with Polaris-recommended oils.
- Check and clean air filter frequently, especially after dusty rides.
- Grease all pivots, suspension, and steering components every 25 hours.
- Inspect drive belt, brakes, coolant, and all fluids at least every 100 hours.
- Store with battery on a maintainer to prevent drain.
- Regularly inspect CV boots, bushings, and fasteners for wear/looseness.
12. Summary Table
| Problem | Likely Cause | Solution |
|---|---|---|
| No start | Battery, fuel pump, relay | Charge/replace battery, replace relay/pump |
| Runs rough | TPS/fuel/air/spark issues | Clean TPS, filter, plug, replace pump |
| Hard shifting | Shift cable or clutch wear | Adjust cable, service clutch, replace belt |
| 4WD won’t engage | Actuator, switch, wiring | Replace actuator, clean connectors |
| Overheating | Clogged radiator, coolant | Clean/flush, check thermostat/fan |
| Weak brakes | Worn pads/rotors, air in line | Replace pads, bleed brakes, flush fluid |
13. Frequently Asked Questions
Q: Why does my Ranger XP 700 lose power after warm-up?
A: Commonly from a weak fuel pump, bad TPS, or vapor lock. Test fuel pressure and check for error codes.
Q: Why won’t my 4WD engage?
A: Check the AWD switch, front differential actuator, wiring, and CV joints for failure.
Q: What’s the best belt to use for replacement?
A: Many owners recommend sticking with OEM or high-quality aftermarket (Gates, Carlisle) for longevity.
14. Conclusion
The 2008 Polaris Ranger XP 700 is a reliable UTV when maintained, but battery, fuel pump, TPS, and drivetrain wear are common issues as the machine ages. Most problems can be quickly diagnosed with careful checks and basic tools. Following recommended maintenance and keeping key spares on hand can prevent most downtime and keep your Ranger reliable for years.
I’m David man behind Lawn Mowerly; I’ve been dealing with lawnmowers and Tractors with my father since I was a kid. I know every make and model and what each one is capable of and love helping people find the perfect lawn mower for their needs.