i have tested the alternator with the engine running by checking the volage accross the battery.
It comes up as 13.7v
I am sure that at idle this should read 14.4 or about that and certainly over 14v.
The battery keeps running flat, and the alternator light flickers now and again
belt slips when cold.
Should I tighten belt and see if the volts increase?
Or as I suspect the alternator is on its way out
The car is a 2000 1.8VVC.
Thoughts please
alternator testing
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Not many rules really, this board being aimed at technical issues, it shouldn't fall foul (hopefully) of some of the more personal issues that can affect forums.
Rule 1 - Is that you need to think very carefully before posting anything technical or asking anything technical relating to the security system of the car - See 'Security Issues' sticky for more info.
Rule 2 - We (MGF Register) do not support copyright infringement and therefore references to CD ROM, PDF versions or paper copies of the workshop manual (for instance) should not be posted on the forum. We don't want to get into trouble and we'd rather sell you a genuine hard copy through our Regalia shop anyway!
Because advice is honestly and freely given in this technical section, much of it will be amateur experienced based, so any information is given in good faith and is not guaranteed as correct.
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Re: alternator testing
Where did you read the voltage, it will be highest at the alternator and lower at the battery.
A slipping alternator belt when cold can be an indication that the alternator is being worked hard to replenish the battery after a cold start.
Check the condition of the belt and it's tension before condemning the alternator.
A slipping alternator belt when cold can be an indication that the alternator is being worked hard to replenish the battery after a cold start.
Check the condition of the belt and it's tension before condemning the alternator.
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