Hey everyone,
I own a 02 raptor 660 that I baby like a child, when I'm not tearing up the trails that is. Now heres my problem. I start it up and it will run for about 5 minutes. Then its shuts off, when I give it throttle it up it backfires. Then it won't start. I need HELP!! Thanks alot for any help.
Dan

 

Also, When I start it up the little coolant light blinks where the key goes in. But the quad never overheats, and is full of coolant.

 

Sounds like you have an electrical gremlin to find. I wish I could help but I don't have a clue on this one.

 

Sounds like a thermal intermittent problem.
Purchase a can of "freeze spray" at Radio Shack. Start your quad, and after a a few minutes, and before it dies, spray the CDI/regulator with the freeze stuff. If it keeps running as long as the freeze spray is cooling it, you've identified the defective component. You can also let it die and freeze one component at time as you push the starter button, until it fires up again.

 

Hmm..This sounds interesting. The cdi regulator is the black box correct? How do I fix the thermal intermittent problem? I want to try this though. Thanks for the info.

 

"Hmm..This sounds interesting. The cdi regulator is the black box correct? How do I fix the thermal intermittent problem? I want to try this though. Thanks for the info."

The electronic control unit (ECU) is probably separate from the voltage regulator. A defective voltage regulator usually just causes charging or overcharging problems. The problem on your quad is most likely the ECU--the most expensive item to replace, of course.

If you can find someone with an identical quad as yours, simply swap out the ECU and see what happens.

If, in fact, the problem is a thermal intermittent unit, you could carefully remove the casing, and use the freeze spray to locate the exact IC chip, transistor, etc, that is defective. Then replace just that component--much less expensive than replacing the whole ECU. You're out nothing for trying.

 

Yes!