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Ollie W
Samba Member
Joined: May 20, 2004
Posts: 854
Location: Portland, OR
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 Posted: Tue Aug 13, 2019 12:31 pm Post subject: Cruise Control ECU models |
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Hello all,
My cruise control suddenly went out. I checked the vacuum hoses and the pedal switch, they're both good. I have another ECU unit, but I noticed it's a different model number. Anyone know if they're interchangeable?
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crazyvwvanman
Samba Member
Joined: January 28, 2008
Posts: 10460
Location: Orbiting San Diego
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| Posted: Tue Aug 13, 2019 12:48 pm Post subject: Re: Cruise Control ECU models |
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I'd say the one on the left is for a Syncro and the one on the right is 2wd Vanagon.
The speed sensor spins twice as fast in a Syncro, so a different control unit is needed. The Syncro speed sensor spins a similar speed to various Audis and other VWs so for the Syncro version VW actually borrowed from one of those cars.
Mark |
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Ollie W
Samba Member
Joined: May 20, 2004
Posts: 854
Location: Portland, OR
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| Posted: Tue Aug 13, 2019 1:25 pm Post subject: Re: Cruise Control ECU models |
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| Perfect, just what I suspected. Since I've got a 2wd, the other will go back in the parts box. |
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Howesight
Samba Member
Joined: July 02, 2008
Posts: 3419
Location: Vancouver, B.C.
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| Posted: Tue Aug 13, 2019 3:47 pm Post subject: Re: Cruise Control ECU models |
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I used the incorrect VW/Audi control unit on my DIY junkyard cruise control system. (see this link: https://www.thesamba.com/vw/forum/viewtopic.php?p=8094550&highlight=#8094550 ) The only significant difference I could discern was the minimum speed at which the control unit would allow engaging the cruise control. In my case, if I recall correctly, the lowest speed at which my incorrect control module will engage is about 35 to 40 mph, whereas the correct unit would allow engagement at a slightly lower speed.
If 50-plus mph is the lowest speed at which you would use cruise control, then you might just find the Syncro module will work.
_________________
'86 Syncro Westy SVX |
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