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CCU getting unresponsive.... I want to bypass part of it! 700 1988

posted by  c_j_mooney on  Wed Aug 24 07:57 CST 2005
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last visit: Wed Sep 14 17:39 CST 2011
[RELATED]

The 760 is very different - electronically controlled rather than a lever that operates a valve. There's not much to removing the controller and opening it - maybe 10 minutes, tops. Don't be afraid of that job. But it does sound suspiciously like a vacuum problem somewhere. Have you verified that you have vacuum to the unit? I'm afraid I can't help in describing which hose, but you're looking for one that runs through the firewall and has constant vacuum, and I believe it'll be directly hooked to one side of that vacuum reservoir up front. Seems like less trouble to try a bit of troubleshooting before replumbing the whole works... I wouldn't be surprised if it's just a check valve that's completely packed in - either plugged up or broken open.
--
Chris, Dartmouth NS Canada 70 M-B 280SE, 83 245DL, 84 244 turbo, 90 780 turbo, 92 VW Golf, 90 740 Rex/Regina






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