Hightower79

It's discharged 3 times now. I am alternating battery's as I have two. The original one in the car was only fitted 2 years ago and the other one is a brand new unit that I had bought for my truck a few months ago and not fitted yet. The voltages taken was directly after I fitted a newly charged battery and was more of a demonstration that it is reading the same voltage before and after engine was running thus coming to the conclusion the alternator isn't outputting voltage. I am not sure why you are questioning a lack of info about vehical age, engine type etc? The title of my post has 2011 1.6TDI and it obviously is a Fabia 2 as that's why I posted it on this forum. I have even mentioned milage in this thread! I wasn't aware however that they sold this model with start stop. This one doesn't have it.

I have checked that there is voltage going to the alternator via the 2 pin plug even though it's about 11.5 volts. Yes, the ignition light does come on with just the ignition on and engine not running. All warning lights go out when running

Yes, possibly. perhaps stick a piece of paper or the end of a cable tie in and see if it makes a clicking noise when it hits the rotating bits.

Thanks for your answer. To be honest, if I was going to take the wheel and inner mudgaurd off to get at the tensioner, then I would be buying a new alternator. I was hoping that it might be something like a relay or a fuse, but that is looking unlikely. A few years ago I would have probably looked in to doing this myself but working on axle stands and kneeling on the driveway is just beond me these days. I think it's time I handed the car over to a local garage and have a new alternator and drivebelt fitted.

When you iwas first alerted to a problem it was because my wife couldn't start the car. I fitted a freshly charged new battery in place of the battery that came out. The voltage is 12.7v across the terminals and is exactly the same whilst the engine is running. The lower voltages where from the alternator rear connecter plug terminals. I was expecting 12.7v also not the 11 volt something I got. I was hoping someone could confirm these lower voltages were correct or not.

about 65000 miles.

As title. Brand new battery and Voltage across battery terminals is 12.7v whilst running which is exactly the same as at rest. I checked the voltage on the large connector at back of alternator and is exactly the same and no end of reving will increase voltage. I checked for voltage on the 2pin push in connector at the rear of the alternator (the one hard up against the water hose) and was only showing 11.3V on one and 11.7V on the other terminal (which both seem low for a live supply) There are no faultr codes and no warning lights. Alternator caput or feed to wires needs checking? Any other ideas?