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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.

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Old 10-22-2011, 10:09 PM   #1
5spd GT
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Default Random popping through intake?

I just got the car started after a couple years of collecting dust.

The car will do one light pop maybe once a minute while idling. It is not "back to back" or on a specific schedule. I had it idling for about 5 minutes and heard 4-5 pops.

The CEL is on, but I was wanting to get some ideas before I get them read this week.

Any thoughts or experience with this?

Thanks.
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Old 10-23-2011, 08:28 AM   #2
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timing, bad fuel, bad wires, clogged injectors, clogged fuel filter, bad equipment. Scan the codes and go from there. You don't need anyone to do it for you. You just need a 2-3' section of wire and you can retrieve the codes yourself.
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Old 10-23-2011, 05:23 PM   #3
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You won't be able to fix this without an oscilloscope. Unless you like "parts slapping" diagnostics.
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Old 10-24-2011, 08:48 PM   #4
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Got code 41 KOEO (key on, engine off) read today. It appears it is the passenger side 02 sensor.

Are the 02 sensor's side specific? Could they have been swapped for the wrong side?
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Old 10-24-2011, 09:08 PM   #5
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nope.
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Old 10-24-2011, 10:11 PM   #6
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swap o2 side to side then re run koer, if 91 shows up replace o2.
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Old 10-24-2011, 10:11 PM
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