MikeT

Voltage: how low can you go?

46 posts in this topic

No.  The old alternator ceased charging entirely a week ago (I have a voltmeter in the car).  The newly installed one worked well, but only intermittently. The old one was shot.  But there is a reason why it was shot, and that's what they're after now.

Share this post


Link to post
Share on other sites

Slip rings and carbon brushes are dead cheap and easily replaceable for those that are sufficiently smart and skilled. Regulator assembly is also cheap and replacable even by fools.  Too late now since your original alternator is gone although most likely nothing was wrong with it. Must be an external cause since both have failed. 

Share this post


Link to post
Share on other sites
6 hours ago, tolsen said:

Regulator assembly is also cheap and replacable (sic) even by fools.

That's a great testimonial! :lol:

Share this post


Link to post
Share on other sites

Posted (edited) · Report post

Yeah... so back to our regularly scheduled programming....

 

The dealer checked all the modules on Saturday; plus grounds and starter cable and they were all OK.

 

Engine dropped again, re&re alternator with another new one. 

 

Installed it, did a 5 minute initial test which was OK, parked it 4 hours, then did another 30 minute road test, both times using the ScanGauge monitoring voltage and they tell me it's fine now, and ready for pick-up.  So I will try to get it Monday night.

 

Second batch of work was no charge.  So glad I did not do this installation myself.

Edited by MikeT

Share this post


Link to post
Share on other sites

Mike, I'll  keep my fingers crossed this is a lasting repair but would have liked to learn what was wrong with those two alternators.  Please ask them.

Share this post


Link to post
Share on other sites
8 hours ago, MikeT said:

Yeah... so back to our regularly scheduled programming....

 

The dealer checked all the modules on Saturday; plus grounds and starter cable and they were all OK.

 

Engine dropped again, re&re alternator with another new one. 

 

Installed it, did a 5 minute initial test which was OK, parked it 4 hours, then did another 30 minute road test, both times using the ScanGauge monitoring voltage and they tell me it's fine now, and ready for pick-up.  So I will try to get it Monday night.

 

Second batch of work was no charge.  So glad I did not do this installation myself.

If you don't mind me asking what did MB charge for the initial Intercooler and alternator replacement?

Share this post


Link to post
Share on other sites

1560, new intercooler, new (redesigned) intercooler holder, new alternator (I have the old one), alternator belt as parts; and labour for all that plus installing a new intercooler fan that I supplied at the same time.  Without the IC fan it'd have been 33 less.

Share this post


Link to post
Share on other sites

Strange they charged extra to fit the fan. Same work load whether they fitted the existing fan or a new one.

Share this post


Link to post
Share on other sites

Good point, but overall the price was right.  Parts alone were $962.56 before the discount of $96.26.  I also had the battery in one of the three keys replaced.  I expected $1500 before tax and it was actually $1396.

 

Plus, as I say, if I had done it myself, I'd have done it twice in a cold garage taken twice as long (couple of days) and my time is worth a LOT more than that $450 odd labour charge to me.

Share this post


Link to post
Share on other sites

C$ 450 in labour is very reasonable for all that work. 

Quite a coincidence charging that amount in labour for repairing a 450!

Share this post


Link to post
Share on other sites

I was only off 10% of my guesstimate of the cost and correctly diagnosed that the replacement alternator was defective.

 

Fyi - it has come to my attention that Mercedes is now supplying remanufactured alternators instead of new.

Share this post


Link to post
Share on other sites
2 hours ago, smart142 said:

Fyi - it has come to my attention that Mercedes is now supplying remanufactured alternators instead of new.

 

Are they still charging "new" prices or is it a reduced cost due to the items not being new but simply remanufactured?

Share this post


Link to post
Share on other sites

I think (without having the bill near me now) that the cost of the unit was close to $400 and I kept the old alternator, so there may have been a core charge.  I gather new ones were over $500.  Maybe I will sell them my core and get the cost before tax at under $1300 ;)

Share this post


Link to post
Share on other sites

Posted (edited) · Report post

Collected Snowball tonight and she's back to new.  Voltage held at a constant 13.8-14.1 throughout the ride home. 

 

They did a full teardown on many of the electrical components including SAM removal but found nothing, before replacing the alternator, again.  An expensive piece of work.  They should have some words with the rebuilder.

 

I am SO glad I didn't do this work myself!

Edited by MikeT

Share this post


Link to post
Share on other sites

I'm so lucky because I have a local rebuilder who I've known for over 20 years - he does quality work and his rebuilds have never let me down.

For club members I can install a rebuilt alternator for $450 all in.

1 person likes this

Share this post


Link to post
Share on other sites

I've got to say: the warranty on this stuff for two years is a good thing, too.  Already used it! ;)

Share this post


Link to post
Share on other sites

I get my alternators rebuilt here in Toronto for $150 cash. PM me if anyone is interested. Takes about 2-3 hrs to replace. At $100 an hour thats what I charge. Saves driving to london if your in Toronto

Share this post


Link to post
Share on other sites

What's the warranty on the rebuild?

Share this post


Link to post
Share on other sites

1 year or 20,000KM (which ever comes first) warranty policy based on manufacturers defects ONLY

Share this post


Link to post
Share on other sites

I am surprised there is a warranty at all if it's an undocumented cash transaction ;)

 

Or maybe you just meant it's 150 with tax?

Share this post


Link to post
Share on other sites

Posted (edited) · Report post

I have been using this rebuilder for over 18 yrs and  he does quality work. His rebuilds have never let me down, never had a problem with any manufactures defects.

I have changed may alternators with cracked cases due to rusting rotors and stators that are causing the problems. You can thank your local municipality for their generous road salting efforts. Keeps the body shops busy too!

His price is $140 for Alternators and $90 for starters plus tax to the public.

http://www.scarboroughstarter.calls.net/?gclid=CjwKCAiA78XTBRBiEiwAGv7EKkIkWbgMuNzKz8xcP0sT9iQRThF4nydU8HEw8BLdOSOt7e3hk_DqMRoCBRwQAvD_BwE&_vsrefdom=p.7720

 

 

Edited by NFB
1 person likes this

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now

    Chatbox
    You don't have permission to chat.
    Load More