High Idle on 90 3.8

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90 tbird

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I have a 90 3.8 lx, Out of no where the Idle went extremely high (6000-7000 rpm and has stayed that way. I was only able to bring it down by disconnecting the m.a.p. sensor but now my car is shooting carbon everywhere. I replaced both the TPS. (throttle position sensor and the EGR.) but to no avail. does anyone else have any sugestions
 
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