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boyt911sc boyt911sc is online now
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Join Date: Mar 2002
Location: Philadelphia, PA
Posts: 12,627
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Thermotime Switch.....

Quote:
Originally Posted by 911quest View Post
Its for the fuel injection. It controls the cold start operation. most of them are disconnected I have found for a reason usually they are bad and cause slow cranking or hard start problems this is just from my experience. I doubt it has to do with your rough running concern.
JP,

That's a thermotime switch and a critical CIS component for cold starting. The CSV (cold start valve) will only work when properly grounded via this switch. The red/brown wire goes to the big connector and the yellow wire goes to the smaller connector.

If the TTS is disconnected or defective, it could either effect your cold start or flood the manifold with extra fuel.

Tony
Old 12-28-2007, 03:42 PM
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