So, is my alternator knackered?
So, is my alternator knackered?
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AlpineWhite

Original Poster:

2,164 posts

225 months

Sunday 24th June 2012
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Hi all,

Looking for a second opinion on my self diagnosis!

My Skoda Fabia vRS (1.9 TDI) has developed the following symptoms:
1) Sqealing / squeaking at low revs. It doesn't change pitch at higher revs, just comes and goes
2) Battery light flickers at low revs or above, say, 50% throttle

So I bought a new drive belt, on the assumption that at 130,000 miles and 6 years old, it was time for a new one anyway. Well, putting that on didn't make any difference (easy to fit - automatic tensioner). So I removed it (no belt at all now) and turned the engine on. No squeaking, it sounded fine, for a diesel. So it must be something connected to the drive belt, right? Had a feel of the various pulleys. Crank pulley was solid, tensioner and air con were both smooth.

The alternator pulley had some play back and forth along its axis, but also a little play radially. It also didn't feel smooth as I rotated it - but then I don't know what it should feel like!

Any ideas? Anything I've missed?

stevieturbo

18,079 posts

277 months

Sunday 24th June 2012
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well, if it sounds fked, and feels fked....it likely is.

maniac0796

1,292 posts

196 months

Sunday 24th June 2012
quotequote all
If you spin it does it sound rough?

It's sometimes wise to change the tensioners on these engines as they create a lot of odd symptoms.