Thanks! I got it working. Whew! Never even had a chance to come
look for answers to my question.
Local independent had a known good "test" PBU. I plugged that in.
No blow. Took out the motor, brushes badly worn. He had a new
motor for his personal 420SE. I bought the motor and got it in.
Still no blow. Fuses good. No juice to fuse 16 or the big 30 Amp
strip. Wiggled the switch, juice. SO it works with the switch
turned on, then slightly toward "off"
Yes, there is a porcupine under the blower. 126 is MUCH easier than
any other MB i ever worked on. Similar to the 2000 dogde van, but
easier. Flat rate for the fan is 1.5 hr. I changed out the PBU
twice, and changed the blower in just over an hour, and I'm not fast.
I knew I had just a few minutes to get to the indy and try the PBU
swap. SO I just ran from the SE corner of town to the far NW corner
(it used to be a separate town) to get the PBU before he closed.
Guess the final analysis is that its going to need either a new ign
lock or ign switch (or both) sometime. Not today's project! It sure
purrs nice now, and BLOWS ICE COLD!
Dieselhead,
'Just sent pdf's of blower and electronic control unit (above
passenger footwell) R&R to you off list. 'May be able to access
wire that you need for the blower at the control unit.
Wilton
----- Original Message ----- From: "WILTON" <wilt...@nc.rr.com>
To: "Mercedes Discussion List" <mercedes@okiebenz.com>
Sent: Wednesday, May 11, 2011 6:43 PM
Subject: Re: [MBZ] 126 Blower A/C
Can somebody tell us if 87 300SDL has a "porcupine?" 'Don't see it
on the maint. CD.
Dieselhead, do you have the main. CD?
Wilton
----- Original Message ----- From: "WILTON" <wilt...@nc.rr.com>
To: "Mercedes Discussion List" <mercedes@okiebenz.com>
Sent: Wednesday, May 11, 2011 6:30 PM
Subject: Re: [MBZ] 126 Blower A/C
Do "we" have archives from about 2003, when Marshall and I
discussed my blower/porcupine problem? I think he told which wire
has 6v, 9v, 12v, and other "stuff" about the "porcupine."
Check the archives; 'gonna see what I can find on the CD.
Wilton
----- Original Message ----- From: "WILTON" <wilt...@nc.rr.com>
To: "Mercedes Discussion List" <mercedes@okiebenz.com>
Sent: Wednesday, May 11, 2011 6:22 PM
Subject: Re: [MBZ] 126 Blower A/C
8 or 10 years ago, blower on my 91 350SDL was inop because of
bad "porcupine"/controller directly beneath blower and above
front passenger footwell. 'Didn't have time to get replacement
"porcupine" before necessary trip of several days. I wired in a
toggle switch which I left hanging just below the dashboard and
by upper right side of center console within reach of my right
hand. It was Summer here in NC and VA, and the system worked
fine. Obviously, I did have access to the right wires to/from
the "porcupine." I believe one has 6v, another 9v, another 12v,
etc., for different blower speeds. I wired the 12v one thru the
toggle switch.
My car does not have glove box; has air bag in its place; if
yours has glove box, the wires may be a little more accessible.
I'll see what I can find on the CD, which I did not have at the time.
Wilton
----- Original Message ----- From: "Dieselhead" <126die...@gmail.com>
To: "Mercedes Discussion List" <mercedes@okiebenz.com>
Sent: Wednesday, May 11, 2011 5:44 PM
Subject: [MBZ] 126 Blower A/C
Finally got the A/C charged on the SDL. Went to drive it and no
A/C! The problem is compounded by the fact that I need to leave
in the morning and planned to take it on about a 10 day trip.
When the Fan and up/down buttons are pushed, the compressor
runs, but there is no blower. Since this is an 87, it has the
large fuse outside the fusebox as stock. Fuses all seem to be
good. I am assuming that the PBU would be the next suspect. I
have no spares.
Is there any way to "hotwire" the fan somewhere without digging
out the fan motor itself?
I know, I know, Jim can resolder the whole board in something
like 20 seconds flat. I don't have an electronics shop and I
don't have time to mess with that tonight. If I can get a
temporary fix, I can take the car. Otherwise I have to take the
van and that means I can't get the 300D back from Daughter to
work on, and that was part of the point of the whole trip!
Leave SDL, bring back 300D.
_______________________________________
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_______________________________________
http://www.okiebenz.com
For new and used parts go to www.okiebenz.com
To search list archives http://www.okiebenz.com/archive/
To Unsubscribe or change delivery options go to:
http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
_______________________________________
http://www.okiebenz.com
For new and used parts go to www.okiebenz.com
To search list archives http://www.okiebenz.com/archive/
To Unsubscribe or change delivery options go to:
http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
_______________________________________
http://www.okiebenz.com
For new and used parts go to www.okiebenz.com
To search list archives http://www.okiebenz.com/archive/
To Unsubscribe or change delivery options go to:
http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
_______________________________________
http://www.okiebenz.com
For new and used parts go to www.okiebenz.com
To search list archives http://www.okiebenz.com/archive/
To Unsubscribe or change delivery options go to:
http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
_______________________________________
http://www.okiebenz.com
For new and used parts go to www.okiebenz.com
To search list archives http://www.okiebenz.com/archive/
To Unsubscribe or change delivery options go to:
http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
