Buy Johnson Outboard Parts

Announcement

Collapse
No announcement yet.

Diagnose Heat Sensor-25 hp

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Diagnose Heat Sensor-25 hp

    My 25 #te25ELCEB horn started screaming, the water was p-ing good & the engine was NOT hot. I changed the water pump, the horn still screams all the time after I turn the key on. I don't know the heat sensor location on the motor, nor how to correct it. (1989 model engine)

  • #2
    (Odd Soundings Of Warning Horn)
    (J. Reeves)

    Should the warning horn beep constantly when the key is turned to the ON position rather than sounding just a short beep as it should, do the following test.

    Remove the TAN wire from the horn. If the constant beeping continues, the horn is faulty, in which case replace it. However, on the other hand, if the beeping stops, something has gone wrong with one of the sensor components at the engine, in which case start disconnecting the TAN wires that are connected to the various components (Heat Sensors, VRO, Vacuum Switch if so equipped, Oil Tank). Disconnecting a unit and having the beeping stop...... you've found the faulty component.

    In your case, The only sensor would be the heat sensor... the wire protruding from the cylinder head (usually a TAN wire).

    NOTE: The small black plastic horn that has a built in black ground wire...... The TAN wire must be attached to the terminal closest to that black wire. Otherwise weird things will happen.

    Thousands of parts in my remaining stock. Not able to list them all. Let me know what you need and I'll look it up for you. Visit my eBay auction at:

    joe_omc32 | eBay
    ********************
    Last edited by Joe Reeves; 08-09-2016, 02:33 PM.

    Comment

    Working...
    X