thezonster

I need a hand figuring out whats up with my cruise control.

I took the 928 to a speedo shop last week to get my cruise control working. It was not working at all.

They have it working now, but it will not hold a steady speed.
It is always increasing or decreasing speed, within a range of 6 mph, but never steady.

I called the guy that did the work, and he suggested that the cruise control servo might be the issue.

Does this sound like the servo, or a vacuum leak issue? Could the vacuum reservoir be leaking?

Any help with this is appreciated.

Fogey1

Probably the printed circuit board. Lots of threads. Search is your friend, but so am I.

There may be dupes below:

https://rennlist.com/forums/928-foru...the-place.html

https://rennlist.com/forums/928-foru...cruise+control

http://members.rennlist.com/sharkski...ugeGremlin.htm

https://rennlist.com/forums/928-foru...ion-fixed.html

http://forums.pelicanparts.com/porsc...ml#post3789513

https://rennlist.com/forums/928-foru...cillation.html

https://rennlist.com/forums/928-foru...-a-change.html

https://rennlist.com/forums/928-foru...l-problem.html

http://members.rennlist.com/pirtle/svc_cc.html

***** http://jenniskens.livedsl.nl/Technic...0/MyTip022.htm

https://rennlist.com/forums/928-foru...e-control.html

https://rennlist.com/forums/928-foru...the-place.html

https://rennlist.com/forums/928-foru...cruise+control

https://rennlist.com/forums/928-foru...ke-lights.html

http://forums.pelicanparts.com/porsc...ml#post3789513

https://rennlist.com/forums/928-foru...cillation.html

https://rennlist.com/forums/928-foru...-a-change.html

https://rennlist.com/forums/928-foru...l-problem.html

http://members.rennlist.com/pirtle/svc_cc.html
http://jenniskens.livedsl.nl/Technic...0/MyTip022.htm

http://www.nichols.nu/tip003.htm

https://rennlist.com/forums/928-foru...-actuator.html

https://rennlist.com/forums/928-foru...-the-oven.html

https://rennlist.com/forums/928-foru...trol-woes.html
https://rennlist.com/forums/10007721-post7.html

https://rennlist.com/forums/928-foru...-actuator.html

https://rennlist.com/forums/928-foru...trol-help.html

mj1pate

Same problem here. Before I dive into mass resoldering most/all the joints, does someone have a picture of where specific components are located from the perspective of the backside of the PC board? Even better yet, is there such a illustration that might include the function of component groups in the same picture? I like the idea of maybe focusing on a possible comparator circuit.