BHMav8r

So I have dropped the motor/tranny to fix some oil leaks.

I would like to test the starter and alternator while its out. Does anyone know the values to check?

Thanks.

ThomasC2

I don't know how to check a starter. I just had my starter totaly rebuilt because I noticed that it sometimes didn't engage when it got warm.

The alternator is easier to check, at least with the engine in the car. At idle you use a multimeter on the battery. It should read 13,5-14V and with more revs you should have +-14V. 14.1 is as new. My alternator just gave 13,0 before I got it rebulit last winter. How you test this with the alternator out of the car I don't know.

Thomas

cptnzero

I'd check the alternator for play in the bearings, it's possible to DIY refurb an alternator but probably more cost effective to swap out if there is excessive play/bearing wear.

The starter is a fairly easy and cheap DIY refurb - I'd be inclined to strip, clean re-grease and also change out the brushes. - video here shows how http://://www.youtube.com/watch?v=mJM2veUNBc0

extanker

some auto zones etc can check an alternator for amperage output [it maybe stamped on the alternator] they may also be able to do an amperage draw on the starter.an auto electric shop in your area can check and rebuild or replace.

BHMav8r

linky no worky . . .

Metal Guru

The only thing that's easily serviceable on the alternator is the voltage regulator so you could change that if want. There are a lot of good YouTube videos on how to check the diodes. Check bearing play too. Be careful when you separate the fan from the alternator because if you damage the threads on the shaft, your buying a new alternator.
When I was re-sealing my engine my starter sat on a workbench in my garage for 11 months which was apparently just long enough for it to corrode to the point where it would barely turn when I bench tested it. I think auto parts stores can test starters but I've never had one tested.

cptnzero