PRC Polaris Ranger Club LLC

Jbird232 · Posted: Thu Aug 25, 2011 7:41 am Post subject: 700 xp overheating

My 2006 700 xp is overheating. Water is boiling out of resevior cap, it will shoot a stream 2 feet in the air. tha radiator is clean and my vent tube on the fuel pump is clear. Could it be the water pump or the thermostat? I got stuck a couple of weeks ago and got it REALLY hot. Then last night night it just started boiling out. Any suggestions would be a help!
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2006 ranger xp nothing done just a ranger!

commanderjjones · Posted: Thu Aug 25, 2011 10:46 am Post subject:

(1) Make sure that the fan is working. The '06 (and '05 to a lesser extent) XP's had problems with frying ECM's and the predominant symptom was that the fan will quit working.
(2) Make sure your radiator isn't partially blocked. A relatively common issue on many SXS's.....not just Polaris.
(3) The thermistor (temp' sensor) is a possible but unlikely cuplrit. I don't think that I've read a post about one being bad. Cut the key on and unplug the 2-wire harness leading to it. If the fan cuts on, the ECM is working, but the sensor "might" be bad. Check the OHMS on the sensor. I can't remember the value off the top of my head, but it can be checked in that manner.
(4) The thermostat is another possible but unlikely culprit (assuming the coolant has always been clean). I'd rule out all of the above before removing/testing, or replacing it.
(5) Although I have seen a few water pmup failures, most of those were on newer machines, and are a very rare occurrence.

Most likely your machine will go into limp mode before the water pump gets hot enough for damage to be done to it or the engine, so check out all of the above and tell us what you find. My guess is that it will either be #1 or #2.
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Jerry
PRC staff / SSW staff

2012 RZR XP4 LE liquid silver / 2006 Ranger XP LE, midnight red, built 10/25/05

Jbird232 · Posted: Thu Aug 25, 2011 11:10 am Post subject:

Thanks, will check it out tonight.
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2006 ranger xp nothing done just a ranger!

Jbird232 · Posted: Thu Aug 25, 2011 11:16 am Post subject:

now that i think of it the fan was not on at all yesterday when it got hot!
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2006 ranger xp nothing done just a ranger!

commanderjjones · Posted: Thu Aug 25, 2011 3:32 pm Post subject:

darcydw · Posted: Thu Aug 25, 2011 6:59 pm Post subject:

I had that happen. The resevior cap must have thought it was a volcano the way it spurted. Here are my suggestions:
1. Check the rubber adapter between the throttle body and the engine for cracks. especially along the top side.
2. Did you have anything at all done to it recently that involved rad fluid? Make sure you have no air in the cooling system. Well, you probably do now anyway. Get the front of the Ranger up a lot higher than the rear and bleed the air out. There is a bleeder screw on the side of the engine by the thermostat housing. Don't trust it though. Squeeze the hose, let it run, bleed it again, squeeze the hoses. It takes a while. I have winched the front into the air high enough I had to use a ladder to reach the rad cap.
When mine did this the worst the dealer had changed the engine mount and admitted they had drained rad fluid, but of course they said it couldn't have been their fault. At the same time I also discovered the crack in that adapter. So I don't know which really caused it.

If it was that hot, check to make sure your thermostat hasn't gotten hot enough to "melt" out of its housing. Mine came loose. I also replaced the thermostat just in case. I was also told to watch out for the coolant impeller pump because they are plastic and can be easily damaged in this case. Mine wasn't.

Good luck.
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Darcy
2012 Rhino 700 Red, 26" Terra Cross
2009 Grizzly 700 EPS camo, 26" MudBugs (His)
2009 Grizzly 550 EPS camo, 26" MudBugs (Hers)

Jbird232 · Posted: Thu Aug 25, 2011 7:12 pm Post subject:

I just had the throttle body and throttle cable replaced they where shot. They boot a new boot on also. Will check voltage when I get home. Is there an aftermarket ECM that you can buy or do you have to with Polaris?
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2006 ranger xp nothing done just a ranger!

commanderjjones · Posted: Thu Aug 25, 2011 8:45 pm Post subject:

Jbird232 · Posted: Mon Aug 29, 2011 4:06 pm Post subject:

I have very little voltage going to the fan i can wire the fan up and drive it all day long. But it won't kick on by itself when i plug it back in. So I am guessing it is the ecm!
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2006 ranger xp nothing done just a ranger!

commanderjjones · Posted: Mon Aug 29, 2011 5:52 pm Post subject:

Jbird232 · Posted: Tue Aug 30, 2011 10:21 am Post subject:

no, will try tonight and see. Just unplug it there on the motor?
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2006 ranger xp nothing done just a ranger!

commanderjjones · Posted: Tue Aug 30, 2011 12:41 pm Post subject:

ELLIJAY700 · Posted: Wed Sep 07, 2011 6:19 pm Post subject:

any good news? Im having the same issue on my 07.
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07 700 Ranger XP

PRC Ranger Club forum A family friendly UTV forum for the Polaris side by side enthusiast, 2013 models, Ranger XP 900. The Polaris Ranger RZR XP 4 900 Forum on www.prcforum.com , 2013 Rangers, RZR,570, HD, 170, RZR-S, xp 900, rzr xp 4 900, crew, orv,side x side, SSW, off-road Information.

PRC Ranger Club forum A family friendly UTV forum for the Polaris side by side enthusiast, 2013 models, Ranger XP 900. The Polaris Ranger RZR XP 4 900 Forum on www.prcforum.com , 2013 Rangers, RZR,570, HD, 170, RZR-S, xp 900, rzr xp 4 900, crew, orv,side x side, SSW, off-road Information.