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P2172 Diagnostic Trouble Code Discussion for October 2011

High Airflow / Vacuum Leak Detected (Instantaneous Accumulation)

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Trouble Ticket Help Requests for DTC P2172
Help Request Posted
2005 Jeep Grand Cherokee Limited 5.7L No Start, Poor Idle Quality VIN: 1J4HR58225
P2172: High Airflow / Vacuum Leak Detected (Instantaneous Accumulation). ... pedal pushed down, Then you have to pump the gas pedal to keep it running at 2800 rpm. If you hold the throttle it will lose power & die. He believed the lifters were holding the valves open so the engine was kept running for 30 minutes at 2500-3000 rp...
October 27, 2011