94 4.9l issues

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Apr 30, 2011 | 12:23 PM

gunner360

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Joined: Nov 2008

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94 4.9l issues

I have noticed that when I hit the gas pedal from a stop light the rpms will drop than go back up, spometimes the engine will stall when this happens. the engine also has a slight looping in the idle not real bad but it would be nice to solve both issues. from what I know could it be just some leaking vacuum lines or a bad TPS or something like that.

Apr 30, 2011 | 12:46 PM

jesterdog

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Joined: Nov 2007

Posts: 179

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From: Texas

Vacuum leak or Idle Air Control Valve (IAC). Also, clean your throttle body real good. They build up a carbon ridge at the throttle plates that cause problems.

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