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Old 08-09-2013, 08:34 AM   #1
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Starting isssues

Hi everyone I haven't posted in a few weeks I've been busy moving from Miami to New Orleans and learning a new job with a 12 week training program. Anyway my car made it over here with no issues but sometimes maybe once a week I start my car and it cuts out. It turns right back on and runs fine.

I always turn my key to the on position an wait about 15 seconds before turning it over. Any idea what it might be? Spark plugs?
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Old 08-09-2013, 08:43 AM   #2
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Try waiting only 2 to 3 seconds. The PCM will only run the fuel pump for that long (actually 1 to 1.5 s) without the engine running, tand here are no other systems that require any more than 1 seconds to "come up". If during your 15 second wait the fuel pressure in the rail drops from either leaking injectors, or vapourisation of the fuel if the engine is hot, the behaviour you describe would be possible...
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Old 08-12-2013, 10:04 AM   #3
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Mine does the same thing from time to time. I put fuel injector cleaner in it on a full tank of gas and it stopped.

Don't let it run to E too often. It scoops up all that nastiness down there.
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Old 08-12-2013, 06:09 PM   #4
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Clean your IAC and MAF as well.
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Old 08-12-2013, 07:05 PM   #5
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Mine does the same thing.depending how long/or many times i let my needles do its sweep turn it on and it has like a second delay or something.most of the time it starts up but just those times it's like it struggles to turn over.already had a maf replaced.dont know what it is
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Old 08-12-2013, 07:15 PM   #6
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Quote:
Originally Posted by Torchred2010gt View Post
Mine does the same thing.depending how long/or many times i let my needles do its sweep turn it on and it has like a second delay or something.most of the time it starts up but just those times it's like it struggles to turn over.already had a maf replaced.dont know what it is
The "needles" should not sweep, you have a blown fuse--probably fuse 21 (5A) in the central junction box,--or possibly or a wiring problem. Fuse 21 supplies constant battery power to the instrument cluster and PCM, to keep their volatile RAM powered up. If it is blown both the cluster and PCM KAM (Keep Alive Memory) will be cleared and reset when the key is turned on.

The cluster will sweep the gauges to determine there full range, the PCM will have to relearn idle air trims, startup AFR, long term fuel trims and a bunch of other adaptively learned stuff.

I have read of people removing fuse 21 to make the gauges sweep, "just like a Honda"--why anyone would want to make their Mustang behave like a Honda is something I cannot fathom?
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Steeda UDPs, Ralco flywheel, RAM HDX clutch, 3.73s, 262 rwHP/305 lb-ft.

New ride (7/1/2013) 1998 Mercedes SL500-5.0L 32V VVT 326/347 HP/tq
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Old 08-12-2013, 07:25 PM   #7
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Depends on what needles he's referring too. All the instrument clusters sweep except the tachometer and mph when you first turn to the "on" position
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Old 08-12-2013, 08:02 PM   #8
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Sorry meant before I turn it on fully I have it in in the on position before turning over.sorry not trying to thread jack here.ive already taking it to ford they always say there's nothing wrong.even took to auto zone and tested everything nada.which is way I haven't got a bama tune
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