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12.19 - Fuel Fail 19 : Low Throttle Position Sensor ( Brett Gadzinsky,  )

High air flow signal, the ECM sees a combination of closed throttle and high intake airflow signals.

Conditions for flagging FF19:

- Throttle position sensor at idle,
- Engine load site 13 or higher,
- Engine rpm,s 1000 or higher for 5 or more crankshaft revolutions.

Default with FF19 flagged: ecu ignores throttle sensor and sets 1.5 volts, idle functions are disabled.

Possible faults:

- High resistance connection to ecu, maf sensor or throttle position sensor.
- Water in MAF sensor,
- Short or open in maf and throttle sensor wiring,
- Bad throttle position sensor.

Clean and wd40 the connections to the tps and maf sensors. Measure the throttle position sensor resistance at idle and as you open the throttle.


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