Pulsing Fan and Heater!

Technical questions and answers about the Mazda Bongo

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eiggone

Pulsing Fan and Heater!

Post by eiggone » Thu Sep 25, 2008 3:49 pm

Hi

I am new to this forum in fact new to any forum, so Hello to everyone out there.
My vehicle is a 1995 diesel Bongo.
My problem is an electrical pulsing when the engine revs are brought up (does not seem to happen at tick over)
the lights and the fan go up and down. The battery is not loosing power and starts OK.
I know that the alternator does not charge at tick over so I am guessing this might be the culprit unless
a heavy load is switching on and off.
Any help would be appreciated I live on an island and do not have access to a garage!

Kenny
teenmal
Supreme Being
Posts: 3656
Joined: Thu Mar 27, 2008 6:08 pm
Location: north lanarkshire

Re: Pulsing Fan and Heater!

Post by teenmal » Thu Sep 25, 2008 3:59 pm

Hi Kenny,Welcome, and What island do you live on? as long as its not another planet im sure somebody will be able to help you.

Mal..
eiggone

Re: Pulsing Fan and Heater!

Post by eiggone » Thu Sep 25, 2008 4:07 pm

Hi

Could just as well be another planet!
A small Island off the west coast of Scotland called Eigg.

Regards

Kenny
teenmal
Supreme Being
Posts: 3656
Joined: Thu Mar 27, 2008 6:08 pm
Location: north lanarkshire

Re: Pulsing Fan and Heater!

Post by teenmal » Thu Sep 25, 2008 4:34 pm

Hi Kenny,looks like your battery is a bit low,does it do this after a good daylight run?
Can you check the voltage in the battery?

Mal..

Ps my Niece lives on Barra.
eiggone

Re: Pulsing Fan and Heater!

Post by eiggone » Thu Sep 25, 2008 6:34 pm

Hi Mal

Know Barra well my dad had a factory there in the sixties.
I will check battery level but I think it is OK.

Kenny...
Slybacon

Re: Pulsing Fan and Heater!

Post by Slybacon » Sat Sep 27, 2008 7:23 pm

Hi,

Always worth checking the earthing plate on the side of the engine. Lift the drivers seat and look for an earthing plate just above the glow plug rail, on the left. Mine was loose when I got my van at first and I had pulsing scavenger fan and similar symptoms to what you describe. If you can't locate it, post back and I'll take a picture and point it out.

Hope you get it sorted.
billy

Re: Pulsing Fan and Heater!

Post by billy » Mon Oct 06, 2008 8:46 am

I've been to Eigg a couple of times. Is the Shearwater still running from Arisaig or has the CalMac taken over?

Knowing Eigg isn't that big at all (3 x 5 miles iirc), it might be that short runs aren't enough to replace the juice taken out of the battery by starting and it may need an overnight charge periodically. But you say it starts OK? Strange. Mine had similar symptoms when the battery was on the way out :?
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