He might have unplugged the Idle Air Control Valve, IACV, which is on the intake manifold near the throttle body. Check the connector there. The Throttle Posittion Sensor, TPS, could be dis-connected. It is on the front of the throttle body at the entrance.
Finally there may be a problem with fuel pressure. You need to have it checked.
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Tuesday, December 27th, 2011 AT 12:45 PM