juwalantz
Extreme
Hello. I need a little guidance. Nytro won't start up. Fuel pump won't cycle. I checked the fuse and it has no power. I also have fault code 43 flashing. Which is fuel injection power or something. I swapped the relays by the ecu. I also swapped the ecu. Nothing happend.I tested the fuel pump fuse. I tried to jump power from my battery to the fuel Fuse. Located by the starter solinoid. The fuse on the right hand side. Still the fuel pump did not cycle. Does anyone know where the other fuel pump relay is. I heard that there is one tapped up in the wiring harness.
nate007
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- 1. '06 Apex -twin screw
2. '04 Redline Revolt 800
3. '09 Nytro XTX - twin screw
There isn't any second relay for the fuel pump, but I've dealt with the same issues before, and I found that the junction blocks that have multiple power wires going to them would get a little corrosion in them and cause all sorts of hard to trace issues.
Look on the harness where it passes in front of the motor, just behind the primary clutch. It could be one of two things. Either the harness itself is chaffed or - look for a small black box that's taped into the harness in that area. Remove the tape covering it and you will find a small connecor with a bunch of brown wires in it, covered with a black cover. Remove the black cover and the little spider that connects all of the wires together. Try cleaning those contacts and re-assemble. You can also try wiggling the harness in that area while turning the key on and see if that triggers the fuel pump to run.
I've also heard that there are issues with chaffing where the harness runs across the top of the fuel tank. These can be hard to find, so sometimes wiggling the harness while turning the key on will help isolate the troubled areas.
Also, you had posted that you swapped the relays. If you changed the main load relay (the one by the battery) make sure the battery cables are on the correct terminals. Dont ask how I figured that out though.. The cable from the battery to the main load relay should be on the terminal closest to the BLUE/WHT wire, which should be the right side when looking at it. If they are backwards, the gauges will still light up and it will still crank over, but the fuel pump and ecu wont run.
Good luck!
Look on the harness where it passes in front of the motor, just behind the primary clutch. It could be one of two things. Either the harness itself is chaffed or - look for a small black box that's taped into the harness in that area. Remove the tape covering it and you will find a small connecor with a bunch of brown wires in it, covered with a black cover. Remove the black cover and the little spider that connects all of the wires together. Try cleaning those contacts and re-assemble. You can also try wiggling the harness in that area while turning the key on and see if that triggers the fuel pump to run.
I've also heard that there are issues with chaffing where the harness runs across the top of the fuel tank. These can be hard to find, so sometimes wiggling the harness while turning the key on will help isolate the troubled areas.
Also, you had posted that you swapped the relays. If you changed the main load relay (the one by the battery) make sure the battery cables are on the correct terminals. Dont ask how I figured that out though.. The cable from the battery to the main load relay should be on the terminal closest to the BLUE/WHT wire, which should be the right side when looking at it. If they are backwards, the gauges will still light up and it will still crank over, but the fuel pump and ecu wont run.
Good luck!
juwalantz
Extreme
Thanks
I will run outside and check it out. Thanks
I will run outside and check it out. Thanks
juwalantz
Extreme
Found the problem
It was the main load relay. I was wiggling wires around there and got the fuel pump to kick on. I pulled the plug connection off there and and noticed a little corrosion. And then I found a broken pin. So I think I need to replace the load relay. The pin was broken on the relay not the plug.
It was the main load relay. I was wiggling wires around there and got the fuel pump to kick on. I pulled the plug connection off there and and noticed a little corrosion. And then I found a broken pin. So I think I need to replace the load relay. The pin was broken on the relay not the plug.
