Rpm jump on initial startup

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Smitty1021

I'm Awesome
Joined
Jan 10, 2013
Messages
256
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Location
Langhorne pa
When I first start it up, the rpms will bounce around between 400-1100ish. Once I start to to drive it, if I let my rpms get up real high, it'll bog a little bit but only for a split second bc I'm shifting. After I get to driving it a bit, I don't have this problem anymore. Only issue is the truck is running sluggish. Not throwing any codes and i just did a tune up. Getting wires today. New IAC and new TPS as well.
 
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