Cruise Control - Not working
Thread Starter
Burning Brakes
Joined: Jun 2004
Posts: 862
Likes: 27
From: Puerto Banus - Marbella, Spain
Cruise Control - Not working
The cruise control on my 84' S2 is not working.
I've measured that the cruise ECU gets 12v, and it does.
Where do I start looking for faults?
Cheers!
I've measured that the cruise ECU gets 12v, and it does.
Where do I start looking for faults?
Cheers!
Nordschleife Master
Joined: Apr 2003
Posts: 9,601
Likes: 39
From: Abbotsford B.C.
The troubleshooting for the CC unit is actually very good.
But I would recommend removing the cc brain and rerunning every solder joint in it as they are common for bad solder joints causing them not to work.
But I would recommend removing the cc brain and rerunning every solder joint in it as they are common for bad solder joints causing them not to work.
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Joined: Nov 2009
Posts: 6,984
Likes: 18
From: Marysville WA
take the unit out of the case, cover the component side with foil, and stick the solder side up , (on a pan) at 350 for 10 ish min in an over. it will heat up the joints and re flow them. worked for me and a few others.
Rennlist Member
Joined: Jul 2011
Posts: 583
Likes: 16
From: Nashville
I'm not sure if 350 will do it. I think the reflow temp is around 365 or so IIRC. I did mine at 385 for 8 minutes and that did the trick. Did it a year ago and the CC still works like a charm.
Thread Starter
Burning Brakes
Joined: Jun 2004
Posts: 862
Likes: 27
From: Puerto Banus - Marbella, Spain
Yes, 350 is a bit low. Did not melt the solderpoints. I did 380 for like 10 mins, but it did not do the trick. :-( Still not working. Need to source a known working CC unit....
Burning Brakes
Joined: Apr 2013
Posts: 981
Likes: 19
From: North Italy
Amazing.I see pictures of guys with a complete snap-on cabinet, full ofevery kind of car tools..... and they cook the cc brain in his kitchen oven.and a lot of people is wasting also time to search for the right oven temperature.....
I visited a lot of Bosch car centers, Porsche specialist garages, mechanics....and never see a bosch home oven...anyone guess why?
I keep on saying that the oven is a bad bad idea.
reflowing is farway better, if you know which component stands the heat of the solder and which doesnt'.
Electrolithic condensers age and(if you're unlucky) perish.....they can stand heat, but the oven is not the solution for this kind of components.They need to be changed for some cents each.that's it.
my 2 cents
Francesco
I visited a lot of Bosch car centers, Porsche specialist garages, mechanics....and never see a bosch home oven...anyone guess why?
I keep on saying that the oven is a bad bad idea.
reflowing is farway better, if you know which component stands the heat of the solder and which doesnt'.
Electrolithic condensers age and(if you're unlucky) perish.....they can stand heat, but the oven is not the solution for this kind of components.They need to be changed for some cents each.that's it.
my 2 cents
Francesco
Instructor
Joined: Jul 2012
Posts: 184
Likes: 0
From: MT
I literally just put my CC in the oven today and tested it, its working now. Although i definitely did deform some of the plastic of some of the components. I was pretty sure i ****ed it up and was about to buy a used one. before i did that i tested it though and it worked. My god it worked.