P1507 Diagnostic Trouble Code Discussion for February 2018
Idle Control System Malfunction
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| Help Request | Posted | |
| 1998 Ford F-150 XL 4.2L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: 1FTZX1723W P1507: IAC underspeed. ... is running crazy rich. As listed above STFT1 and STFT2 are pegged at -20% @ idle and @ 3K rpms. F/P is good (34-37psi running). Modis reads no Faults on any injectors. Fuel pulse width is .01 (but not absolutely sure on this). TPS at 19.6 degrees. All ... |
February 05, 2018 | |
| 1998 Ford F-150 XL 4.2L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: 1FTZX1723W P1507: IAC underspeed. ... is running crazy rich. As listed above STFT1 and STFT2 are pegged at -20% @ idle and @ 3K rpms. F/P is good (34-37psi running). Modis reads no Faults on any injectors. Fuel pulse width is .01 (but not absolutely sure on this). TPS at 19.6 degrees. All ... |
February 07, 2018 |
