Date: Fri, 14 Jun 2002 17:47:00 -0400
From: KeithG <noonenopsamspring.com>
Subject: Re: Still another cruise control question


Dave, I am laughing at your other post and also just laughing at your request. The 92-93 C900 cruise module is a lemon. The good news is that it can be made into lemonade with a little work and no cost except for time and solder. Remove CC unit from car, remove red gunk completely from solder side of board (MEK or PVC pipe cleaner works great), Suck off all solder , resolder all connections with new solder. I do not know if the red gunk causes the failure over time or if Hella just had bad solder or a faulty machine. I have 2 1992 models and 100% were intermittent. After the repair, both work fine 1.5 yr later. This is reported on Saabnet.com C900 BB regularly. I am convinced that there are no '92 or '93 models with functioning cruise. now, after that bit of info, make sure that there is not a simpler problem (faulty clutch switch, or otherwise), but my money is on a dying ECU. P.S. I tried to locate and resolder only the suspect joints, but gave up after 2 attempts and re soldered the whole board. see this link: http://216.78.172.244/electrical_system_folder/cruisecontrol.htm regards, KeithG alofusblount wrote: > Has any one had a cruise control unit go intermittent. I have a 92 900s > convert, na, 69000mi. Poor thing was neglect abused for some time before I > bought it. For about the last month or so the cruise control will not > engage, or drop out w/o warning. The cruise control light stays on. Went > through the troubleshooting procedure of checking the brake and clutch > switches and hoses, all good. There does not appear to be any vacuum leaks, > all hoses look real good, actuator pushes air with authority. I have noted, > after buttoning up the dash of course, that there are many ground problems > with these cars. Has anyone out there seen this type of problem? Before > pulling dash apart, again, and checking everything out, again, I would like > to know just how often the cruise control unit, or the vacuum unit goes bad. > tia > dave > the new guy > >

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