2004 Ford Taurus lunges when brakes are applied

Maintenance/Repairs
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1

2004 ford taurus lunges and speeds engine up when brakes applied

2

Vacuum leak? Yet no CEL?

3

Locate the Idle Air Control valve on the throttle body.

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With the engine hot/idling, take the handle of a screwdriver and tap on the IAC valve.

If the engine idle speed changes or the engine stalls, replace the IAC valve.

Tester