2003 Pontiac Montana starting

2003 PONTIAC MONTANA
85,000 MILES • 6 CYL • 2WD • AUTOMATIC
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OFFLEAD3
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When I start 2003 Montana the engine cuts out, doesn't stall, before i can get my fingers off the key, turn the key again and it starts and runs fine. This happens EVERY time, hot or cold. Have plenty of fuel pressure, put injector cleaner in tank, had injecters cleaned at oil change place, turn key on to let pressure build up, then start, still happens.
About every other day the knock sensor code comes up, replaced knock sensor code still comes up about every other day. Battery is original but still says 12.5V.

thanks
PK
Sep 11, 2009 at 7:31 AM
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JACOBANDNICKOLAS
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Is that the only code that has come up? Also, what is the fuel pressure and is fuel pressure drop off within spec?
Sep 23, 2009 at 1:41 PM
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OFFLEAD3
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The fuel pressure was one of the first things I checked.
IT was a while ago but I think it was over 45 and only dropped a little when started.

The knock sensor code is still only code that comes up.

Thanks
Sep 23, 2009 at 2:08 PM
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