1979-1993 & 94 Conv [Subscribe to Daily Digest] |
 | [Main C900 Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Re: C900 have good wirework Posted by Snowmobile [Email]  (#686)  [Profile/Gallery]
(more from Snowmobile) on Wed, 7 Nov 2012 06:48:17
In Reply to: C900 have good wirework, Siegfried, Tue, 6 Nov 2012 13:37:51 Members do not see ads below this line. - Help Keep This Site Online - Signup |
I do agree with you, it is often important to have a complete understanding, and more often than not, that involves more than plug + play diagnostics... but sometimes under time pressure, swapping is a useful endeavour to get the car rolling... I suppose it is a balancing act to know just how far is ok to go with swapping - ie if it is useful or not...
I don't mean to criticize the c900 in particular wrt electrical connections. Most vehicles have issues in that regard (eg the SID pixel loss in the 9-5 is simply a connector issue!)... I do wonder how many times people (dealerships especially) swap parts out when all that is bad is a connector, or even worse, just a dirty contact in a connector... but since the new $300 module had a good $3 connector, and it worked, the old module must be junk! So I agree on the testing... there are many many parts replaced like that in the automotive world (eg a thermistor/wire/connector assy: which of those subcomponents is most likely to go bad?)...
However, on the c900, there are numerous switches (eg windows, interior light, etc) where the contacts are unplated copper. It is common knowledge here to open them periodically and remove the oxidation, and thankfully it is cheap and easy + they are serviceable, but had the contacts simply been plated, it would save all that effort. Another example is in the sedan rear tail light, an edge style connector is used, the plating is very basic, and the mechanical connection so-so, and the passenger side light gets connections from the drivers side *through* the edge connector, ie, current has to pass from one side of the female to the male to the other side of the female before going on to the other light... there is enough current that any dirt/oxidization over time, heats, causes worsening of the connection, eventually leading to burning and failure... of course none of this is on a normal circuit board (it's 70's era electronics) so repairs tend to be hack jobs... it should have never been wired that way in the first place... there are other examples also... but nothing is perfect, so I'm not really trying to be that critical, just recognizing that it connectors are a significant source of issues... the central locking in my case (unless all 3 brains are bad) is most likely damaged wires going through the drivers door, but I'd need to open that up, and test continuity, and I have more pressing issues... I haven't really looked into what is required to test the cl brains... they must be pretty simple inside...
, Mon, 5 Nov 2012 05:17:43
, Mon, 5 Nov 2012 10:22:03, Mon, 5 Nov 2012 10:36:16
, Mon, 5 Nov 2012 11:07:54, Mon, 5 Nov 2012 08:07:19
, Mon, 5 Nov 2012 09:28:31, Mon, 5 Nov 2012 09:33:36, Mon, 5 Nov 2012 10:54:06, Tue, 6 Nov 2012 12:35:14, Wed, 7 Nov 2012 06:48:17 <-- Viewing This Message, Mon, 5 Nov 2012 08:42:54, Mon, 5 Nov 2012 09:19:00, Mon, 5 Nov 2012 09:52:05, Mon, 5 Nov 2012 15:29:34, Mon, 5 Nov 2012 16:58:11, Wed, 7 Nov 2012 22:04:48
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
 |
 |
 |
 |
 |
