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Louie, Technician
Category: Motorcycle
Satisfied Customers: 11252
Experience:  25+ yrs. experience
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2005 DRZ400S. Wouldn't rev past idle unless I unplugged the

Customer Question

2005 DRZ400S. Wouldn't rev past idle unless I unplugged the alternator the runs fine. Replaced the stator and now no spark and low peak voltage. replaced it again and same results. Possible bad flywheel?
JA: How many miles are on the car? What size is the engine?
Customer: Its a motorcycle
JA: What is the model of your '05 motorcycle?
Customer: DRZ400S
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Just told you
JA: Anything else you think the mechanic should know?
Customer: no
Submitted: 2 months ago.
Category: Motorcycle
Expert:  Louie replied 2 months ago.

Hi, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.

Initially, re-install the old/original stator. Proposed preliminary tries / checks (if have not been done) on suspects:

  • • measure output AC Voltage from any pairing of the three (3) stator wires when idling and when attempting to rev;
  • • check battery voltage during idling and when revving;
  • • regulator (most likely suspect).
Customer: replied 2 months ago.
Did you not read my diagnostics
Expert:  Louie replied 2 months ago.

I read that "... Replaced the stator ...replaced it again..." not re-install the old.

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