Attak quit running

[craigwsrx]

I was riding and my sled suddenly quit running like you turned off key, no warning no studder. The dash stayed lit. Fuel pump does not run when you turn key on. It will run if you jump it. I tried computer out of another Attak, same problem, I tried relays, same problem. I have spark, if I shoot gas in throttle bodies it fires. If I jump fuel pump it will not fire up. I removed fuel line at rail and it will pump fuel, not sure of fuel pressure. Sled has 12,000 miles. Any suggestions?

 

[LJ 452]

Injectors?

Maybe a bad TPS. I'm assuming if the comp. doesn't see a thottle pos. it may not fire the injectors. But I would also think that this would give you a code on the display. So I guess I'm back to injectors.

 

[craigwsrx]

I do not get a code. I am waiting for a backordered manual from Yamaha so I can trouble shoot properly.

 

[blue er]

check for injector pulse.
Is it possible a mouse has gotten into the wiring check around the bottom of the secondary (i found a little present there myself)
also my owners manual has wiring diagrams use thes to troubleshoot your fuel problem if possible.

 

[**sj**]

check for frayed wire...seems to me I remember seeing some frayed and grounding intermittently against the chassis

 

[87gtNOS]

I was riding and my sled suddenly quit running like you turned off key, no warning no studder. The dash stayed lit. Fuel pump does not run when you turn key on. It will run if you jump it. I tried computer out of another Attak, same problem, I tried relays, same problem. I have spark, if I shoot gas in throttle bodies it fires. If I jump fuel pump it will not fire up. I removed fuel line at rail and it will pump fuel, not sure of fuel pressure. Sled has 12,000 miles. Any suggestions?

Alright, you have no power at the fuel pump. So find the relay....I can check the wire colors for the FP relay in the morning...my manual is in the truck. Some say the 2nd relay is it, others says it's the 3rd relay!!

Once you are sure you have the CORRECT relay, check for power TO it. I can also lead you to the ECU.

Obviously if you swapped ECU's, you have a bad relay or cut wire.

 

[craigwsrx]

It ended up being the 10 amp fuse under air box by battery that runs injectors. Very bad spot for a fuse to change or check in a snowstorm in the UP. Thankyou everyone for input.

 

[87gtNOS]

Glad you found the problem.

 

[**sj**]

now you need to ask yourself why that fuse blew...

 

[87gtNOS]

now you need to ask yourself why that fuse blew...

Is there a smiley for a new can of worms??!!!!!!

 

[craigwsrx]

There was a little corosion on blades of fuse and lots of miles on sled. I just got finished riding sled and it seemed fine.