[DeTomaso] NPC - Troubleshooting OBDII "Lean Bank 2" Code

[Paul Timko]

Sounds like a vacuum leak.  I had a similar problem on my BMW.

Paul
#9270

On 1/13/2017 1:26 PM, Doug wrote:
>    Hi Guys,
>
>
>    I'm asking "the collective" for ideas on where to go from here on a
>    problem with my 1998 Mustang Cobra.
>
>    About a year and a half ago, it started throwing a P0174  "Lean Bank 2"
>    Check Engine code and I've done the following in an attempt to fix it.
>
>    After each mod was made, it took about 180 miles of driving for the
>    code to reappear (since this code means the ECU hitting its max long
>    term enrichment limit).
>
>    The car otherwise drives fine, so once this limit is reached, it's
>    still a very enjoyable drive.
>
>
>    Doug Braun
>
>    Blue 73L #5505
>
>
>    DATE            MILES         REPAIR
>
>
>    Sep2014   87,000   Replaced IAC IAC (Idle Air Control) Valve - Autozone
>    Duralast TV228
>
>
>    Oct2014    88,000   Replaced Mass Airflow Sensor - Autozone/Cardone
>    74-9524
>
>
>    Jul2015    105,000   Replaced Throttle Position Sensor - O'Reilly - BWD
>    EC3025P
>
>
>    Jan2016   111,095   Replaced both Upstream O2 Sensors - RockAuto/NTK
>    22016
>
>
>    Feb2016   111,762   Replaced Intake Air Tract Temperature Sender (IAT
>    Sensor) - SMP
>
>                                  Replaced Coolant Temperature Sender
>    (Sensor) - SMP
>
>                                  Replaced Spark Plug Wires
>
>
>    Mar2016   111930    At this point, I took the car to a professional
>    Garage.  They found a
>
>                                  bank 2 intake manifold leak and replaced
>    the Intake Manifold Gaskets
>
>                                 (manifold to runner + runner to head +
>    upper Intake).
>
>                                 Replaced the Plenum Seal.
>
>                                 Had Dr. Injector
>    [1]http://docinjector.com/ clean & flow match the Fuel Injectors.
>
>
>    Apr2016   112,105   Replaced Fuel Pressure Regulator - Motorcraft
>
>
>    May2016   112,385   I bought one new coil pack and used it to
>    temporarily replace each original coil pack.
>
>                                   With the new pack in each location, the
>    code reappeared.
>
>
>    Dec2016   112,840   Replaced Fuel Pump Assembly - Airtex (sock filters,
>    wiring harness, case, flange & gasket)
>
> References
>
>    1. http://docinjector.com/
>
>
>
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