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Need help with IAC

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1984 t-type

Murphy's Law
Joined
Jul 11, 2010
Messages
1,516
When I first start my car it idles rough and wants to die unless I stay on the throttle, at this time the IAC count is around 20-40 and tps is at .46. Once it gets up to temp and goes into closed loop it will idle on its own and runs a little smoother but the iac goes to zero and I cant adjust it. What could be the cause of this, bad sensor ? where should I go from here ?
 
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