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Discussion Starter · #1 ·
Turns over and starts when I have my foot on the accellerator and runs while my foot is on the gas .As soon as I take it off it dies. Any input would be appreciated.
 

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vaccum leak somewhere

check the big intake tube between airbox and throttle body..

i bet you one of the hose clamps is loose on it.

if thats not it, look for cracked or rotted hoses, a round hose thats being sucked flat, a missing hose, ect. Also, cleaning the MAF couldn't hurt.

Get a friend to press the gas pedal while you look/listen under the hood for a hissing hose.
 

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2017 Focus 1.0 Ecoboost 2003 Focus ZTW
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It's under the intake manifold between the back of the engine and the manifold. There's 2 bolts holding it on. If you put the car on ramps you can get to it with a small ratchet from underneath. If it wasn't working because of a short or open circuit you would get a code so it might be just dirty. You could spray some cleaner down the hole in the side of the throttle body if you don't want to take it off. That leads to the iac.
 

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Discussion Starter · #7 ·
Well after 3/4 can of throttle body cleaner and previous IAC post I have an idle back for now ....crossing fingers
 
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