| Author |
Message |
JRV (Jrvall)
Intermediate Member
Username: Jrvall
Post Number: 2457
Registered: 11-2002
| | Posted on Sunday, September 21, 2003 - 6:32 pm: | |
Be careful on these 512TR's/348's/355's that the Alt rebuild shop uses the Heavy Duty (special) Regulator. Otherwise you may end up with a flashing dash bulb or check engine light.
The puters seem to be hungry for a specific type of sine wave from the alt/reg. |
Jim Avery (Boxer12)
Junior Member
Username: Boxer12
Post Number: 248
Registered: 6-2003
| | Posted on Sunday, September 21, 2003 - 5:09 pm: | |
OK, so it looks fairly simple to do. Pull the grill off the top behind the deck lid, loosen the belt and (BTW< is this a serpentine belt? looks like the A/C is same belt since it is inside out) remove the alternator. How do you go about keeping the belt on the other pullies or getting the belt back on without having to drop the engine? Any tricks to this job before I end up getting into some kind of quagmire? |
David Feinberg (Fastradio2)
Member
Username: Fastradio2
Post Number: 372
Registered: 4-2002
| | Posted on Sunday, September 21, 2003 - 1:32 pm: | |
Jim,
Based of the voltage readings...the alternator is not charging enough, hence the warning lamp is on. I'm with Ernie on this one..take it off, and have it rebuilt. Really, no big deal...The voltage regulator is either built-in, or attached to the back of the alternator. Absolutely no need to spend more than $100-$150 tops to have yours rebuilt...
I'm still running the orginal (Bosch) alternator on my 30 year old BB...It's been rebuilt twice...very inexpensively.
Regards,
David |
Ernie (Ernie)
Member
Username: Ernie
Post Number: 801
Registered: 11-2001
| | Posted on Sunday, September 21, 2003 - 11:56 am: | |
Jim
have you checked the connections to make sure that they are clean and on properly? If all else fails just take it to any reputable alternator shop and have it rebuilt for about $50-$100. $650 is waisted money on a new alternator. |
Jim Avery (Boxer12)
Junior Member
Username: Boxer12
Post Number: 247
Registered: 6-2003
| | Posted on Sunday, September 21, 2003 - 11:51 am: | |
David, belt tight, connections look ok but I will clean up just to eliminate as a poss cause. |
Jim Avery (Boxer12)
Junior Member
Username: Boxer12
Post Number: 246
Registered: 6-2003
| | Posted on Sunday, September 21, 2003 - 11:49 am: | |
More details: Just turned 10K miles on car ('91 TR). Checking voltage at battery: At rest, ingition off, 11.95 volts. Running at idle, 11.70 volts. At 2000+ rpm, when light goes on, 11.93 volts.
Any chance there are bushings in the alternator that can be replaced (ala Carrera)? or a stand alone voltage regulator that could be going out?
I don't want to jump at the alternator since it looks like a $650+ price tag.
Surely this is a common problem, eh? |
David Feinberg (Fastradio2)
Member
Username: Fastradio2
Post Number: 370
Registered: 4-2002
| | Posted on Saturday, September 20, 2003 - 8:20 pm: | |
Jim,
Other than checking the obvious, such as:
Battery connections
Ground connections
And loose alternator belt(s)....
My money...OK, your money should be on the alternator.
Regards,
David |
Jim Avery (Boxer12)
Junior Member
Username: Boxer12
Post Number: 241
Registered: 6-2003
| | Posted on Saturday, September 20, 2003 - 6:01 pm: | |
Just got back from a little drive and my battery light was coming on at about 2000 rpm...gets brighter with revs..please don't tell me the alternator is going out...I have had enough mechanic fun this summer! |