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lean at wot, but only in closed loop

5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

lean at wot, but only in closed loop

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Old 08-27-2009, 05:34 AM
  #21  
ctgreddy
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anyone know what the codes mean?
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Old 08-27-2009, 08:02 AM
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Genhero
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511 - EEC permanent Read Only Memory (ROM) test failed
327 - DPFE or EVP circuit below minimum voltage of 0.2 volts
637 - TOT sensor circuit above maximum voltage
654 - MLP sensor not in park position
565 - Canister purge circuit failure
621 - Shift solenoid #1 circuit failure
622 - Shift solenoid #2 circuit failure
624 - Electronic Pressure Control solenoid or driver circuit failure
652 - Modulated Converter Clutch Control solenoid output circuit error
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Old 08-27-2009, 08:10 AM
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ctgreddy
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Looks like most of them are due to the 5 speed with the auto computer. The 327 is due to me deleting egr. Who knows why my canister purge doesn't work. Does the 511 mean my computers crap? Or is that just from getting the aftermarket tune?

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