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What would cause surging idle?

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Old Jan 13, 2012 | 10:19 AM
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From: Cottage Grove, WI
What would cause surging idle?

Hey question is in regards to my 95 F150. Its got a 351W being run by a 302 MAF computer

If i take the cid differences out of the equation, what would cause a surging idle when cold on a MAF controlled engine? After i drive it for a few min, idle will smooth right out. Already has a new IAC. Thanks for any help!
 
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Old Jan 14, 2012 | 12:05 PM
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From: Newport, N.C.
Is the throttle body dirty?
 
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Old Jan 14, 2012 | 04:20 PM
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I dont remember, ill try cleaning it
 
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Old Jan 14, 2012 | 07:20 PM
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revans9295
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From: Blooming Grove ,tx
i have a 1990 with a 351w . it was surging and i unplugged the TPS and it leveled out and idled smooth .
 
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