Ignition Light stays on

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Ignition Light stays on

Postby hutch74 » Fri Jan 05, 2018 1:08 pm

I know this has probably already been answered before, so apologies. Yesterday the ignition light started flickering whilst driving, which I think I am right in saying points to a problem with the dynamo/or fan belt. However, when I parked up and took the key out the light stayed on - I immediately disconnected the battery. Does this point more to an issue with the control box rather than the dynamo?
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Re: Ignition Light stays on

Postby woodywoodchipper » Fri Jan 05, 2018 3:44 pm

check the brushes in dynamo 1st, easily replaced,
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Re: Ignition Light stays on

Postby hutch74 » Sat Jan 20, 2018 11:16 pm

Sorry for the delay in replying. I have been down with a spot of the flu. Finally managed to get out & replace the brushes and problem solved! thanks v much woodywoodchipper.
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Re: Ignition Light stays on

Postby woodywoodchipper » Sun Jan 21, 2018 4:22 pm

your welcome, glad it was an easy fix, ;)
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Re: Ignition Light stays on

Postby hutch74 » Tue Jan 23, 2018 8:17 am

OK - now this. Am hoping it may just be fan belt needs adjusting. (Sorry if these are simple questions). Took it out for the drive to work this morning (7 miles). Sound was ok on idle, but when accelerating and going at speed (for a minor!) fan belt started squeeling - along with a secondary noise which I assume was the dynamo spinning. No warning lights came on. When I parked up at work the dynamo was also really hot to the touch. Loose fan belt?
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Re: Ignition Light stays on

Postby Custard » Tue Jan 23, 2018 9:39 am

Possibly, but I would not expect the dynamo to be too hot.

It is bolted to the engine so will get warm.

I would adjust the fan belt, but when you do slacken it completely and spin it by hand listening for any noises at the ends and then grab hold of the pulley and try and pull it up and down and sideways there should not be any real movement in there.

Then do the same to the water pump as you get a screech if the belt slips on the water pump as well.

If all is well inspect the belt and re-adjust.

Given it is a dynamo it is probably the originally pulley on both it and the water pump and they could be well polished on the inside, possibly even worn with a ridge in them which can make a belt slip more easily. If you see them I found a belt that looks like it has teeth on it works better.

Link for example picture only.

http://www.minispares.com/product/Class ... .aspx|Back to shop


Don't overtighten the belt though it is a short term fix and can damage the bearings in the water pump and or dynamo.

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Re: Ignition Light stays on

Postby hutch74 » Tue Jan 23, 2018 9:48 am

Thanks Sean - will try and have look in my lunch break. The dynamo was definitely a lot hotter than it should have been.
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Re: Ignition Light stays on

Postby hutch74 » Mon Jan 29, 2018 3:49 pm

So managed to get home the other night - with a few stops along the way. Burning smell from Dynamo. Water pump seems ok - no noise with belt off & spins without a gritty feel. Have taken the dynamo apart and it looks like it needs replacing. While I am at it is it worth replacing the regulator box? Could it be a case of dynamo having to work too hard & battery not charging? Will also pick up a multimeter. Just curious as to why the ign light does not come on if dynamo at fault.
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