Speaking Honda

Swifty · 03 February 2005, 21:37

Heres a strange one. Honda 4str 50 control box is squarking like a parrot with laryngitis and no one seems to know why.

Ok at idle, into gear its ok, over about 1500rpm control box beeps about 40 times a minute. Throttle down and it shuts up. Have tried disconnecting the oil pressure and temp senders -no difference. Sometimes trimming out stops it but not allways. Engine is not overheating or low on oil.

First anyone know what warning it is, and second any ideas on how to shut polly up!!!

Paul F · 03 February 2005, 22:48

Have you tried the multi pin connector on harness,sounds as though engine movement and vibration may be the cause it you have a wire earthing out.
Paul

Bilge Rat · 04 February 2005, 08:23

Tim
Have you been talking to the Water Merlin about all this

whats his opinion

hank · 04 February 2005, 16:17

It seem that if you disconnected the senders on the motor and still get the squeel then there is a short in the control box.

The control box isn't too bad to open up and look around in there.

I have a factory manual for the smaller Honda O/B if you need a wiring road map.

hank

Swifty · 04 February 2005, 22:20

I only post up the gooduns.

From our initial observations the sensors feed into the brain box. The output from the brain goes through the multipin and upto the control box. Inside the control box is a sounder, wired against ground. Its reasonable now to presume the fault has to be at the brain box end, as it has to output a signal to make the sounder squeak.

My fear is its a fault in the brain box, but I (hope) may be wrong.

Dont have a manual or diagramme. Have had to do it the old way.

Paul F · 05 February 2005, 18:14

Tim
Sounds as though unfortunatly you are right about the brain box. Alot of the mercs have an alarm module and you get the same problem that you are describing with them. Which means changing the module. But i bet its cheaper than the one you are on about.
Is there an option to swap brain boxes or are we worried about blowing the other one.
Paul

Swifty · 06 February 2005, 22:38

Yup,
It is on a twin setup (Centarus) but am concerned we'd end up with two parrots!!.

Paul F · 07 February 2005, 18:30

I see where you are coming from. instead of putting good one onto sick engine, why not go other way and put sick brain on good engine. Might still be a gamble.
Paul

Swifty · 07 February 2005, 20:08

Quote:

Originally Posted by Paul F

I see where you are coming from. instead of putting good one onto sick engine, why not go other way and put sick brain on good engine. Might still be a gamble.
Paul

Theres a fought. Will sugest it to baldrick next time I see 'im.