brand new battery just bought, got power at cpu unit module, voltage at coil but no spark battery is good it cranks and cranks but will not start,It may be your battery. How old is your battery? How many CCA's (cold crank amp) does it have? When was the last time she ran?
Your has a cam senor, if you are not getting spark it could be the cam sensor and or the Ignition module. That is where I would look next :2thumbs:Does anyone know if the 04 Mastiff has a crankshaft sensor and if so where is it located?

is there a difference between a cam sensor, and a crank sensor?Your has a cam senor, if you are not getting spark it could be the cam sensor and or the Ignition module. That is where I would look next :2thumbs:
Carlos![]()

If your an 04 you probably have a 107 so check your Thunderheart to see if the light flashes on and off as you crank the bike. If not take off the small round cover next to your right foot on the engine and see if your cam sensor is burned, smells bad, or damaged. Start there.is there a difference between a cam sensor, and a crank sensor?![]()

cam sensor was badYour has a cam senor, if you are not getting spark it could be the cam sensor and or the Ignition module. That is where I would look next :2thumbs:
Carlos![]()
Replace it with a Twin Tec Kit. Drag Specialties part number is 2101-0242.... Retail for $389.95...Just put one of these into an 04 chopper I'm working on. Used a lot of these and they work great.cam sensor was bad![]()
yep it was the cam sensor changed her out and she fired right up!Your has a cam senor, if you are not getting spark it could be the cam sensor and or the Ignition module. That is where I would look next :2thumbs:
Carlos![]()
well it wasnt burned or damaged that i could tell but replaced it and she fired right up.:lol:If your an 04 you probably have a 107 so check your Thunderheart to see if the light flashes on and off as you crank the bike. If not take off the small round cover next to your right foot on the engine and see if your cam sensor is burned, smells bad, or damaged. Start there.
![]()

if the new cam sensor is smelling hot is there a problem behind it or is this normal? :loony:Your has a cam senor, if you are not getting spark it could be the cam sensor and or the Ignition module. That is where I would look next :2thumbs:
Carlos![]()
