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Discussion Starter #1
After some additional troubleshooting I have decided to start a separate thread concerning my problem. To back up. My Prowler got real hot about a month ago after a blown fuse on the cooling fan. Still ran and no problem. After washing it and putting it up for two weeks I noticed it started to stall after warming up some. To date I have drained the tank and put fresh gas in, cleaned out the gas tank vent tube as well as the fuel line. The problem got slightly better but still was stalling. I noticed that when I turn the prowler off a crackling sound is coming from the ISC valve. I unplugged the connector going to the valve and no more sound. I decided to take the ISC valve off and found dirt inside. Since then I cleaned out the dirt and cleaned the connector. Problem seemed to be fixed as far as the idle but not the crackling. Before putting the bike back together I decided to rinse down everything with low pressure. After finishing the wash job I started it up and it stalled a couple of minutes later. I pulled the ISC valve off again cleaned it and put it back. Seemed to idle again but again crackled when turning off the ignition. On order is the O ring for the ISC valve as it seemed a little loose. Any other recommendations?
 

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Air leak on the ISC Valve would cause erratic idle issues. Also check the other O-rings on the throttle body. For what little they run replacement should be a no brainer! LOL
 

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Discussion Starter #3
Air leak on the ISC Valve would cause erratic idle issues. Also check the other O-rings on the throttle body. For what little they run replacement should be a no brainer! LOL
I ordered all of them today. I think when my Prowler got hot from the fan failing the heat warped the O-rings. Not sure if that is possible but it seems reasonable to me. I'll give you an update once installed.
 

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Discussion Starter #4
HTML:
Air leak on the ISC Valve would cause erratic idle issues. Also check the other O-rings on the throttle body. For what little they run replacement should be a no brainer! LOL
Hey Fairmont, I replaced the o-ring on the isc valve and it seems to idle better and no stalling. However, it still makes a crackling sound from the isc when turning off the bike. T verify no problems with the o-ring I started the Prowler and sprayed electrical cleaner on the outside of the electrical connections of the throttle body. No problems until I sprayed it on the isc and it stalled. I didn't spray the connector but the actual body of the isc valve. Turned off the ignition after it stalled and turned then cranked it right back up. Idled fine, sprayed cleaner back on it and it stalled. Could the isc be bad, maybe cracked? I hate to replace that expensive part but it seems logical. What's your thoughts?
 

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We got sidetracked! LOL Sorry Bout That! Crackling like electrical snap? Or engine type backfire? Spray carb cleaner on the valve while running, see if the rpm raise's. If so you have a leak in the valve. That is an expensive little devil! The connector on mine is FUBAR'ed, and I'm still looking for a pigtail to repair it! I jury rigged it for now!
 

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Discussion Starter #6
We got sidetracked! LOL Sorry Bout That! Crackling like electrical snap? Or engine type backfire? Spray carb cleaner on the valve while running, see if the rpm raise's. If so you have a leak in the valve. That is an expensive little devil! The connector on mine is FUBAR'ed, and I'm still looking for a pigtail to repair it! I jury rigged it for now!

Yes, crackling like electrical but from within the ISC valve. If I unplug it, it stops. Strange. I sprayed electrical cleaner on the valve and it died so I assume the valve is bad. I'll try the carb cleaner as you said but I suspect it will increase the rpm's. Do you think when the bike overheated that it may have put a crack in it? Trying to figure out how they go bad to prevent future problems. This one only has about 260 miles on it. I believe I saw a pigtail adapter on country cat for the isc valve. Not sure which bike it was for though.
 

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Heat will do strange things to parts! I'd check out Ebay, and other sites for the ISC valve, I looked at Babbitts and they have it listed at 128.00 dollars! Also contacted Country Cat regarding the pigtail!
Hello Richard. We have the repair kit #0437-071 in stock, ready to ship. Cost is $25.99. Description below:

You can now easily repair your damaged connector without replacing the entire harness
Simply cut off your old connector and splice this one in place
OEM Arctic Cat part
Fits models with 0430-074 ISC
Connector is 5-pins wide, but uses the outer 4-pins, middle pin is not used
Includes connector with wire leads, 4 solder splices, and instructions

Fit ATV Models:

2009-2015 550 H1
2008-2016 700 H1
2008-2016 1000 H2
(Excludes XR & Alterra Models)

Fits UTV Models:

2009-2015 Prowler 550 H1
2008-2016 Prowler 700 H1
2009-2016 Prowler 1000 H2
 

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This is exactly why I still like the carb'd models. A lot less to mess with and "old school" mechanics can work on them.
 

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Pro's, and Con's for sure! Carbs do a great job! EFI is difficult to work on with all the different sensors related to them. Not all that much difference in performance.
 

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Yes, crackling like electrical but from within the ISC valve. If I unplug it, it stops. Strange. I sprayed electrical cleaner on the valve and it died so I assume the valve is bad. I'll try the carb cleaner as you said but I suspect it will increase the rpm's. Do you think when the bike overheated that it may have put a crack in it? Trying to figure out how they go bad to prevent future problems. This one only has about 260 miles on it. I believe I saw a pigtail adapter on country cat for the isc valve. Not sure which bike it was for though.
Look at the Power Sports Nation store, they have a used valve for your machine, 29.95!
 

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Discussion Starter #12
Update on my situation. I replaced the ISC valve. Started it up and seemed to run fine. Sprayed carb cleaner and electronics cleaner by the new valve as before and no adverse affects. I then drove it down the road got about 1/4 mile and stopped. One stopped it died. After a couple of cranks, it fired up and drove home. Stalled a couple more times Then after messing with a couple of things. It idled and ran down the street several times without any problems. I went a rented a fuel pressure tester and am getting 42 to 44 constant. So, I am thinking there may still be some water or crap floating around in the fuel system. Any thoughts. Also, anyone ever try seafoam?
 

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I have always used Chevron Techron in all my cars, boats, mowers and Prowler. I have heard good things about Seafoam, but have never tried it, because the Techron works really good.
 

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I've seen seafoam in the stores, and have heard good things about it but never have tried it. What is its primary function?
 

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Discussion Starter #15
Off of seafoams site.


SEA FOAM PRODUCTS FOR POWERSPORTS ENGINES

No matter what moves you, Sea Foam products work safely and effectively in all powersports engine makes and types including motorcycles, snowmobiles, ATV, PWC… Use Sea Foam regularly to dissolve harmful fuel residues, restore lost engine power, stabilize fuel, lubricate upper cylinders, and help protect your engine investments from long-term wear.
 

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I'll have to look into it! thanks
 

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i use seafoam in all my atv's and snowmobiles. it works good. in fact my kids ac 400 has it in now. carb wouldnt stop dripping gas even after a full rebuild and would cut out at higher rpm. problems are almost non existent now. still has some issues from time to time so im thinking its junk going through still. that varnish can stick everywhere. he is about half a tank into it and were planning on running 2 full tanks with seafoam through it.
my 650 v2 wouldnt idle for anything. after a tank of gas with seafoam its perfect. the gas were getting now days varnishes so darn fast. i wont run anything but 91 octane now at the end of the season. that stuff doesnt varnish as fast so it can sit in storage with seafoam in it.
i use 1 oz per gallon.
 

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Well, you sold me on it!
 

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Discussion Starter #19
So I came home tonight and put some seafoam in. 1 oz per gallon. Let it idle up to operating temp and then back down a couple of times. Went inside to eat dinner. Came back out and decided to let it warm up again and then take it around the block. No stalling. Some rough idles here and there but not dead. I think I need to run a full tank or two with the seafoam and my problem will hopefully be solved.

On a side note. I stopped in to the local Polaris dealer this past weekend just to look. Based off of parts available and aftermarket support I am strongly considering going to a Ranger 900 or 1000. Dealer offered me 7k on trade due to only having 280 miles on it. I may try to sell it outright but that was a pretty good number plus the tax savings on that 7k.

Thoughts?
 

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7K for your machine is a good price on a trade! Rangers are pretty nice, the 900, and 1000 are popular!
 
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