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D-Jet High idle

posted by  Chris Mullet on  Thu Sep 21 12:36 CST 2017
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last visit: Fri Oct 24 09:08 CST 2014
[RELATED]

If the idle adjustment is screwed all the way in and the throttle plate is completely closed then you have a vacuum leak somewhere.

When you disconnected the cold idle valve did you cap off the intake port good and tight?

Does your car have that goofy EGR setup that could be leaking?

It could be the brake booster is leaking air. Try capping off the booster vacuum hose.
--
Current rides: 2005 Volvo S80 2.5T, 2003 Volvo V70 2.4NA, 1973 Volvo 1800ES (getting ever closer to road worthiness)






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