02 Viper er intermittent spark

[yamanut]

Hey guys my 02 Viper er is giving me problems with firing.
The main harness looks fine no sign of rub through.
When I crank it I get no spark. When I let go of the ignition it will fire once.
Then the next time it may or may not even do that .
Could this be a issue with the ignition switch or possibly the stator?
I've checked and rechecked every connection on the sled.
TIA

 

[MrSled]

Could be stator, could be voltage regulator it could be harness under the motor has broken wire, lots of stuff. Almost need a service manual. Wire problems suck to trace.

 

[sideshowBob]

Back in the day I had a 540 Vmax with the same issue and I got lucky and it was only the kill switch.
Other things to check:
-rust on inside of flywheel and or surface of stator poles
-stator pickup coil
-stator itself
There is also a white relay above the left footwell around the ecu that can cause issues but I think it cuts out the lights only....has been a long time...

 

[74Nitro]

Hey guys my 02 Viper er is giving me problems with firing.
The main harness looks fine no sign of rub through.
When I crank it I get no spark. When I let go of the ignition it will fire once.
Then the next time it may or may not even do that .
Could this be a issue with the ignition switch or possibly the stator?
I've checked and rechecked every connection on the sled.
TIA

Do a cranking AC volt test on the stator.
As demonstrated here on a motorcycle -

 

[74Nitro]

I know your machine doesn't run, but just do this test cranking it over. What matters is all three loops give the same AC volts.

 

[Maim]

with it firing when you let go of the key, try testing for spark by pulling it over. if it has spark, i would suspect a worn out ign switch or some dirty/bad grounds. had this happen before on a sled and i cannot remeber how i fixed it but wasn't hard.