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02 Edge x 700 cooling problem

Tech Info

 
 
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  #1  
Old 12-31-2009
bterra700
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Angry 02 Edge x 700 cooling problem

Took my sled out for a quick ride the other day, first of the season!!! about 5 miles into it temp light comes on and starts over heating. Checked coolant before I left and it was full, had to limp it back home shutting it down periodically to let it cool. Seems like coolant is not cycling could this be a a water pump that is shot or maybe just the pump belt? Any idea's on how to diagnose this, thanks!
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  #2  
Old 12-31-2009
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2005 700 XCSP,2008 700 Dragon Switchback
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The 02 were prone to overheating problems and Polaris came out with a so called mod to add more cooling capacity to the system.Not even sure you can get them anymore.

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then I'll be busy fingering myself on Saturday with my in-tact fingers, thank you.
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  #3  
Old 12-31-2009
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I have an 02 and it's favorite thing to do on trails is overheat (followed closely by ride like a sailboat). I added a tunnel extension cooler and it "helped" but it seems trails are a no go for this thing. I can't figure out why either, it's like the coolers are made of glass and don't conduct heat? Every time I stop my coolers are pouring water off but the sled's running toasty. Anyone know what they did for 03+ sleds to fix it? Maybe that's why they ditched the aggressive timing curve....
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  #4  
Old 12-31-2009
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What shape is the snowflap in? I've found that the snowflap is an essential component of the cooling system.
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  #5  
Old 12-31-2009
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I'm not sure if the chassis makes a difference or if the cooling system was different but I have never had overheating trouble with my rmk at home or out west.
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  #6  
Old 01-01-2010
bterra700
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The flap seems to be in good shape... I only had it happen(overheat) once last year and it was pretty warm out when it happened! Guess I will keep an eye on it and see if I find anything glaring...Thanks happy new year!
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  #7  
Old 01-01-2010
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Quote:
Originally Posted by rock2324 View Post
Quote:
Originally Posted by Ibreakstuff View Post
. Anyone know what they did for 03+ sleds to fix it? Maybe that's why they ditched the aggressive timing curve....
The 03's added the rear cooler in the tunnel like the pic that Rock posted and a longer snowflap. Read # 12 and try everthing on my list!!!!


If you are experiencing engine overheating symptoms please review the following

1) Keep Idle periods to a minimum (less than 5 minutes)

2) If the TEMP light comes o?n but the engine is not overheating, inspect the thermistor. The thermistor should read 192 +/- 30 ohms at 212 degrees F (100 degrees C) in a water bath.

3) Check to see if the coolant surge tank is distorted. Look closely at the pressure cap seat. If distorted, replace.

4) Verify that the coolant system will hold at least 12 psi of pressure. If the cap cannot hold at least 12 psi of pressure, the systemwill overheat very quickly. The coolant may boil in an otherwise normal operating temperature range disrupting thermistor readings to the CDI box.

5) Bleed the system correctly and completely. The system should be bled of any trapped air using the following procedure:

Allow the system to cool completely. Fill the reservoir with coolant to the maximum indicated mark.

Apply parking brake and install the pressure cap and run the engine at specified idle RPMuntil the thermostat opens. o?nce the thermostat opens raise the front or tilt machine slightly o?n its left side so that the coolant bottle is the highest point in the cooling system. Cycle the RPM from idle to enough RPM (4000) to get coolant to flow but not enough RPM to engage the clutch. It is important to get enough coolant flow to purge the air from the crossover hose or rear cooler and observe this air reaching the bottle.

Loosen the bleed screw at the top of the water outlet manifold until trapped air has been purged. Tighten the bleed screw. Turn off the machine and release parking brake. Allow the system to cool completely. Recheck coolant level after the cap has been removed and add coolant to fill line if necessary.

6) Check the TPS specification and make sure it is between 3.9 and 4.0 volts at wide open throttle. Use TPS
tool PN 2201519.

7) Ensure the customer is driving in adequate snow conditions for cooling. Trail riding o?n hard pack while occasionally dipping into powder may not generate enough snow o?n the heat exchangers to keep the engine cool.

8) Slower speeds may not generate enough through-hood air ventilation. Inspect the hood vents for obstruction. Removal of the hood vents may aid in ventilation.

9) Inspect the hi-fax for excessive wear, which may be an indication of snow and cooling conditions. If the hi- fax are worn, it may be due to inadequate snow conditions.

10) Make sure track tension is set to specification. Track tension specifications are: 3/8-1/2, 16 ahead of rear idler shaft with 10 lb. weight for EDGE. 1/2-3/4, 16 ahead of rear idler shaft free hanging for M-10.

11) Adjust the suspension settings to the specified SAG for the customer. This procedure is outlined o?n the decal located o?n the underside of the hood, any 2002 Snowmobile Owners Manual or Performance Service Manual PN 9917367.

12) Remove existing snow flap and Install new longer snow flap PN 5433521-1106, and 5 rivets PN 7621472. This longer snow flap keeps snow in the tunnel longer enhancing cooling.

IMPORTANT: The possibility exists that the new snow flap (PN 5433521-1106) may become damaged when operating unit in reverse or when backing unit off of a trailer. Use caution to ensure snow flap does not curl under the tunnel when backing up the snowmobile.
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  #8  
Old 01-01-2010
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Mines a 03 with M-10 and I have never overheated and trust me, I don't ride in more than a inch or two of snow most days. We do alot of ice riding around here which is hard on the machines..
Bryan if your timming is advanced then you really need to try #6 (TPS) on the list! If your out on the voltage at WOT than the Digital Ignition Box will advance the timming again in which it could cause the sled to overheat.
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  #9  
Old 01-01-2010
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ice scratchers also can help kicking snow up on trails and ice to aid in cooling.
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  #10  
Old 01-01-2010
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I don't feel I've ridden in low snow conditions. It does fine off-trail. I think I will be checking my TPS, and changing snowflaps. I ripped mine pretty bad last time out. Next flap will be hillrod style; a mud flap for a semi with an outline of a naked chick on it. Sweet.
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  #11  
Old 01-01-2010
mach1
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try a aftermarket muffler,i used to have a dyno on mine and never got passed 1/8 on the temp gauge,when i had to change it back to stock she runs about half to 3/4 on the gauge now.
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  #12  
Old 01-03-2010
bterra700
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Awesome...I will go through the list and see if I can get it to run better. I have a feeling it might be my track tension. Thanks again!
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  #13  
Old 01-03-2010
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if your timing is advanced on them twins put it back to stock, they have a very aggressive timing curve in the mid range. many old schoolers that are used to cutting heads, and throwing timing at engines usually burn down there twins often and cant figure out why.

rich pretty much covered the overheat list. I personally would pop the cover off and inspect the belt, its not a cheap belt but its cheap insurance to put a new one on since if the belt goes, your motor will be shot before the light comes on.
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  #14  
Old 01-23-2011
bsolve
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Default Cooling Prob on 02 700 Edge X

I had the same problem with mine. You can ride it for a while then 30min or so it heats up. two things check the rear flap and the other was my cooling impeller on the sled went to pieces.
Good luck!
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