What was the fuel pressure? Good to some people may not be enough.
Is the check engine light on? If it is, do you know the code?
Roy
FLASHING DIAGNOSTIC TROUBLE CODES WITH 12 PIN DATA LINK CONNECTOR
Due to software changes and the removal of the diagnostic enable circuit by using a 16 pin Data Link Connector (DLC), Diagnostic Trouble Codes (DTCs) may no longer he obtained by grounding "A" to "B" at the DLC. The use of a Tech 1 scan tool will be needed to obtain both current and history DTCs. If the vehicle has a 12 pin DLC that contains a pin "B" then flashing codes MAY be possible by following this procedure.
Although it is recommended that a diagnostic scan tool be used to read diagnostic trouble code(s), it may be possible to flash trouble codes on certain vehicles equipped with a 12 pin DLC. The DLC terminal "B" (diagnostic terminal, if equipped) is the second terminal from the right of the DLC's top row. The terminal is grounded by connecting it to terminal "A" (internal Powertrain Control Module (PCM) ground), the terminal to the right of terminal "B" on the top row of the DLC.
Once terminals "A" and "B" have been connected, the ignition switch must be moved to the "ON" position, with the engine not running. At this point, the Malfunction Indicator Lamp (MIL) (Service Engine Soon/Check Engine) should flash DTC 12 three times consecutively. This would be the following flash sequence: "flash, pause, flash-flash, long pause, flash, pause, flash-flash, long pause, flash, pause, flash-flash." DTC 12 indicates that the diagnostic system is operating. If DTC 12 is not indicated, a problem is present within the diagnostic system itself, and the Diagnostic System Check should be performed.
Following the output of DTC 12, the MIL (Service Engine Soon/Check Engine) will indicate a diagnostic trouble code three times if a diagnostic trouble code is present, or it will continue to output DTC 12. If more than one diagnostic trouble code has been stored in memory, the diagnostic trouble codes will be output from the lowest to the highest, with each diagnostic trouble code being displayed three times.
INTERMITTENT MALFUNCTIONS INDICATOR LAMP
In the case of an "Intermittent" problem, the MIL may light and then go out. However, the corresponding diagnostic trouble code will be stored in the memory. When unexpected diagnostic trouble codes appear during the diagnostic trouble code reading process one can assume that these diagnostic trouble codes were set by an intermittent malfunction and could be helpful in diagnosing the system.
An intermittent diagnostic trouble code may or may not reset. If it is an intermittent failure, a DTC chart should NOT be used. Consult the Diagnostic Aids for the diagnostic trouble code chart corresponding to the intermittent diagnostic trouble code. Diagnosis by Symptom also covers the Intermittents. A physical inspection of the applicable sub-system most often will resolve the problem. Refer to System Diagnosis/Diagnosis by Symptom/Intermittents. See: Computers and Control Systems > Initial Inspection and Diagnostic Overview > - Intermittent Malfunctions
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Monday, June 15th, 2020 AT 9:45 AM
