Volvo 2030 strange behavior

[Chanquete]

Hello. Looking for advice I report the problem.
The engine starts instantaneously. But at the same moment the sound of the low pressure alarm goes no. But the oil pressure instrument displays steady 25 lb.
And the engine runs normally.
The volt meter shows 12 V, but if I accelerate slightly I hear a soft click and the Volts climb to the usual charging tension of 14 V.
The generator belt fits perfectly.
Thanks in advance for any orientation!.

 

[penfold]

The oil pressure switch which triggers the alarm may be on its way out, replacing it may help.

 

[neilf39]

Are you sure it is not the charging alarm? If I start my engine at idle my charge alarm will sound until I blip the throttle. As I understand it the alternator is not excited enough until it gets a few more revs but once it is it stays that way. Sounds like yours is doing the same given what you say about the voltage.

 

[seadog30]

Are you sure it is not the charging alarm? If I start my engine at idle my charge alarm will sound until I blip the throttle. As I understand it the alternator is not excited enough until it gets a few more revs but once it is it stays that way. Sounds like yours is doing the same given what you say about the voltage.

+1 , its the same on my MD 2040.

 

[Shaddickp]

Same for my MD2030D, also only does it after not being started for a few days. So I just stick the throttle into neutral, up the revs and go about my usual getting ready to leave things done, then knock the throttle back to idling and alls well.

 

[Chanquete]

Hello Penfold, Seadog, Neilf and Shaddickn I thank you all for your helpful references.
I found the problem in the loss of excitation, current, of the field of the generator.
Now everything is OK.
Thanks again!

 

[Clancy Moped]

+1 , its the same on my MD 2040.

A quick blast of reverse solved that for me.

 

[Hoist]

Glad you got it sorted. We had something similar but turned out to be a bad warning module