90 CQ Idle seems very low when starting?

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Old Jan 7, 2012 | 07:52 PM
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Default 90 CQ Idle seems very low when starting?

When I start the CQ it takes a bit of cranking and then the RPMS zoom up nicely for a few seconds however quickly drop to the stall point unless I rev the engine. Also, when cold if I come to a stop light the car will rev up for a second and then rev down and often stall. Any thoughts?
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Old Jan 8, 2012 | 05:27 AM
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does it have an idle control valve? or cold start sensor? which engine do you have?
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Old Jan 8, 2012 | 11:23 AM
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Originally Posted by merton1973
does it have an idle control valve? or cold start sensor? which engine do you have?
coupe has ICV, bosch or hitachi and only one engine: I5 2.3 20v n/a (7A)
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Old Jan 8, 2012 | 01:03 PM
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maybe this site can help you. http://20v.org/engprob.htm#coldstart
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Old Jan 8, 2012 | 02:05 PM
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If everything has been ok just lately, then I will assume its the ICV (idle valve, I always cleaned the carbon tracks out of my older Audi's, and VW's and if that didn't work then I pulled the trusty Fluke out for testing on the pins on the valve. Other than that its vaccumm lines or a torn flow sensor boot by experience. Lots of guides about this as you have a good link up above.
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