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Discussion Starter #1
Yesterday was not a good day for my machine. Last week I had intalled a brand new Dynatek FS cdi and took it out and it worked awesome. No problems. Yesterday, I went to start the machine and the battery was dead. Hooked it up to a charger and gave it a fast charge for an hour and a half. Wouldn't start. Jumped it with my truck battery and it started but ran rough and wouldn't idle for crap. Once off the jumper cables, it would just die. Figured it was a bad battery. Spent $100 getting a replacement. Put it in it and she fired up and ran...but still a bit rough. Loaded up the machine and took it out.

We were about 1.5 miles from the trailer on a sweet sandy road when a the guage immediately let my know it was overheating. I shut her down and waited for 30 minutes, started it back up and headed back towards the trailer. No sooner did we hit the main road than the temperature warning kick back on. I noticed the radiator fan also was not kicking on. So I shut her down again, grabbed by daughters quad, grabbed by truck, loaded up the machine and went home.

I figured there might be mud still caught up in the fan that might be keeping it from kicking on. When I got home I pressure washed the fan area again and went to restart the machine to let it run long enough to see if the fan kicks on and if it overheats.

Guess what: THE NEW BATTERY WAS DEAD!

So I did the only thing I could think of and unhooked the Dynatek CDI and reconnected all the stock harnesses. I put the charger on the battery and let it charge for an hour. Came back out and she started back up and ran great. Let it fun for 30 minutes and it didn't overheat (but I never heard the fan run each time I checked it's still in question).

Let it finish charging and took it off the charger when it was full at 9pm. Let it sit overnight and checked it this morning. Started right up.

So I'm pretty sure my Dynatek CDI was the issue. For whatever reason, it was draining the battery and not running quite right. Wierd because my initial run last weekend with it went awesome. Now...it's killing battery's (and fast) and causing my motor to overheat. Hmmmm.
 

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I could see the Dynatek making it run rough,but I dont understand with the key off how it would drain the battery.anythings possibly.
 

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Discussion Starter #3
Honestly...I don't get it either. It's not the stator, as when the machine is running, it's delivering 14.5 volts constant. Once off it drops to 12 volts. I know the EFI tends to be a constant (but minute normally) drain even with the key off, and I'm not sure if the Dynatek box just amplifed it. But I'm talking it was a QUICK drain. That new, fully charged, battery was dead within 5 hours of install. Once switched back to the factory harness, it was good overnight. I rechecked the instructions to make sure I didn't make a mistake on the installation, but everything was correct. There's really no way to NOT get the installation right on those because the Prowlers harnesses are very specific to each item.

Here's hoping Dynatek has good customer service.
 

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I would suggest you get a hold of Dynatek and ask them. their customer service is pretty good. I can't imagine why it would be draining your battery but might be something defective in the Dynatek unit. I've never had those issues (knock on wood) but I hope you get it fixed promptly.. let us know how you make out.
 

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I would suggest you get a hold of Dynatek and ask them. their customer service is pretty good. I can't imagine why it would be draining your battery but might be something defective in the Dynatek unit. I've never had those issues (knock on wood) but I hope you get it fixed promptly.. let us know how you make out.
I just bought mine the other day it has a year warranty.My unit is a cdi yours is a ECU box yours is for F/I set ups,but I still dont know why It would drain battery with key off.I will make a call monday and see what I can find out for you.
 

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Discussion Starter #6
Yesterday I had more time to dig around on my machine and troubleshoot.

1) My overheating issue wasn't caused by the Dynatek issue. The fuse for the fan relay had popped. Either happend when I swapped the battery out for the new one or there was enough mud caked in the fan shroud that it overloaded the circuit when it tried to kick on. Cheap, easy fix.

2) The Dynatek box is definitely the culprit for killing my battery and running rough. Stock harness & cdi setup runs great and maintains a charge. The moment I reconnect the Dynatek setup, it stumbles and wont charge the battery. Maintains a hard battery drain even with the ignition off. Going to call ATV Galaxy (who I purchased it through) to see if they will exchange it. I've heard their customer service is pretty good.

Best I can figure is that the Dynatek box got water up in it and caused the issue. It worked great the day after install, but the issues started after I had taken the Prowler to the pressure washer to clean out all the mud. Water proof it is not. After looking closer at the box, it doesn't have a good seal around where the wiring enters. Once I get my replacement, I'm going to figure out a better way to mount it to protect it from the elements (after I silicone the heck out of that entry port).
 

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Discussion Starter #7
Just got off the phone with Dynatek. Great customer service so far. Will be sending in my faulty unit for inspection tomorrow. Should have a replacement by next week.
 

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Just got off the phone with Dynatek. Great customer service so far. Will be sending in my faulty unit for inspection tomorrow. Should have a replacement by next week.
good news,Mavic when you install new box use diaelectric grease on your plug in ports.glad you found your issues.:)
 

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I'm with de3... dielectric grease should help it keep running in wet conditions, thats what I did with mine and I've had it right under water and its still working fine (knock on wood). glad they're going to warranty it for you, let us know how you make out.
 

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Discussion Starter #10
Ya...I've got a tube of dialectric. The instuctions ask for the spark plug wire to be greased but not the other snap on connections. I'm kicking myself for not having just greased every connection now.
 

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Ya...I've got a tube of dialectric. The instuctions ask for the spark plug wire to be greased but not the other snap on connections. I'm kicking myself for not having just greased every connection now.
I just have one big connection on mine and I put some grease on all the prongs.
 

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Discussion Starter #12
Ya. This was definitely a live and learn rookie mistake for not coating each connector with grease. Won't make that same mistake twice. Am also going to add a silicone seal around the part of my FS box where the wiring goes into it. The one I had didn't have a seal and the wires were just taped up at the exit point.
 

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Ya. This was definitely a live and learn rookie mistake for not coating each connector with grease. Won't make that same mistake twice. Am also going to add a silicone seal around the part of my FS box where the wiring goes into it. The one I had didn't have a seal and the wires were just taped up at the exit point.
Mavic19,I called pcpoffroad and talked to don about your dynotek ECU box and he said you got water in the connections,and it made it back feed back to your ignition,He said that is odd but it can happen,he said you have power to your switch even if the key is off on the machines that are F/I.he said you could probably blow dry out your connections,and diaelectric grease your connections and put back together and it would probably be alright.I told him the dynotek was gonna replace it.:)
 

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Discussion Starter #14
Was just about to box up my unit to send it back when something caught my eye. Figured out why moisture got into the unit and caused issues:


Best I can figure is that the instructions call for the unit to be zip tied to the top of the frame by the passengers seat:


Once the seat base is installed, I checked and there's enough flex to put pressure on the Dynatek CDI. The added weight of a passenger could (and did) put enough pressure on the case to crack it. Instead of mounting it per instructions next time, I'm mounting it under that frame rail.
 

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I would say that's the problem,I wonder if they will still replace it.
 

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Discussion Starter #16
Spoke to Larry from Dynatek. Told him about the cracked case. He says he's heard a few instances for my year of machine having issues from where they recommend it being mounted. But he stated the cracked case shouldn't have caused a water damage issue as they coat their boards in an epoxy to waterproof it. Stated they wouldn't hold any damage to the case against me and they'd take care of it. So far, I'm really impressed with their customer service. Can't wait to get my replacement. :)
 

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I just pulled out my CDI box and to my surprise the original owner had installed a Dynatek box in it. So that was a pleasant surprise. So I just got done adding the dialectric grease to all of my electrical connectors at the engine.
 

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Spoke to Larry from Dynatek. Told him about the cracked case. He says he's heard a few instances for my year of machine having issues from where they recommend it being mounted. But he stated the cracked case shouldn't have caused a water damage issue as they coat their boards in an epoxy to waterproof it. Stated they wouldn't hold any damage to the case against me and they'd take care of it. So far, I'm really impressed with their customer service. Can't wait to get my replacement. :)
That's great news,great customer service.:)
 

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I just pulled out my CDI box and to my surprise the original owner had installed a Dynatek box in it. So that was a pleasant surprise. So I just got done adding the dialectric grease to all of my electrical connectors at the engine.
Shane,when you get a chance snap me a picture of your Dynatek box.
 

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Shane,when you get a chance snap me a picture of your Dynatek box.
I will. I'm guessing it is a pretty old one. Not sure if they have changed much on it over the years. Are they pretty much plug n' play, or are there actual tuning things you can do with them?
 
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