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Old 07-23-2009, 04:21 PM   #1
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Mustang Sounds Like Its About To Die

Alright, So i have a 99 gt and when i rev it up in neutral or am in first gear at a stop sign the engine sounds like it fades away and then comes right back, my front 02 sensor is fried on the front passenger side, just installed new spark plugs, have currenty an x-pipe if that matters but what could this be?
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Old 07-23-2009, 04:24 PM   #2
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Re: Mustang Sounds Like Its About To Die

Well, I would fix your fried o2 sensor first since that is going drastically affect the way the car runs.

Thats where I would start anyhow.
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Old 07-23-2009, 04:27 PM   #3
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Re: Mustang Sounds Like Its About To Die

Do you know where i could get the front passenger one? Its the Purple one that screws on to the xpipe if that helps
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Old 07-23-2009, 04:31 PM   #4
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Re: Mustang Sounds Like Its About To Die

All 4 O2 sensors screw onto the pipe. Purple sounds like it is the rear O2, not the front though. But the colors could be different...

You can get replacement O2's direct from ford or you could get them from any autozone, oreilly's, advanced autoparts, napa, etc. Replace both of the front ones when you do it though...don't just replace one.
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Old 07-24-2009, 10:48 AM   #5
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Re: Mustang Sounds Like Its About To Die

while your at it, clean the air filter (or replace if oem) and clean your maf sensor with on contact no residue electronic cleaner
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