Good chance there is a break in the wiring harness. Joel
On Thu, Oct 31, 2019 at 6:00 PM Josh Muckley via CnC-List < [email protected]> wrote: > Hall effect switch at the flywheel sounds to be working. You might use an > o-scope to verify clean and consistent square wave. > > Tach is a pulse counter and integrator. It will need power (+12v and GND) > and a pulse. Verify pulse is making it there at the same amplitude as at > the flywheel. Verify power. > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > On Thu, Oct 31, 2019, 5:53 PM sv Rebecca Leah via CnC-List < > [email protected]> wrote: > >> Does anyone know anything about Yanmar 4JHE tachs? Rewired my engine, now >> tach fails to work. Tried new tach no help. >> Pickup off flywheel shows an ac voltage that increases with rpm. >> Tacoma desiel had me check cleanliness of pickup. No dirt. >> At a loss. I need help. >> >> >> Doug Mountjoy >> Sv Rebecca Leah >> C&C LF39 >> 253-208-1412 >> Port Orchard YC wa. >> _______________________________________________ >> >> Thanks everyone for supporting this list with your contributions. Each >> and every one is greatly appreciated. If you want to support the list - >> use PayPal to send contribution -- https://www.paypal.me/stumurray >> >> _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > -- Joel 301 541 8551
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
