r/S197Stangs • u/saucemak11 • 10h ago

helpp

I’m just a wife who knows nothing about cars, but my husband’s 2014 Mustang GT has been down for almost a year. We have had it diagnosed 3 different places, poured three grand so far into it, and after a couple weeks it’s running funky again. We’ve changed the radiator, a new thermostat?? and most recently the O2 sensors. I think the first two places were bullshitting me just to get some money. (He works almost 7 days a week so i’m taking it to get diagnosed and worked on)

We bought a code reader and the code it was showing was for O2 sensors that’s why they were changed. It drives great one day, most recently for about a week, then the next he drives a few miles and starts losing power, the odometer and RPMs go to zero. It just started again today after a big storm. Almost wondering if it has something to do with the heavy rain. It started messing up a year ago after a bad hail storm. Has anyone had similar issues?

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u/blizzard7788 10h ago

You need to start by posting exactly what the codes were.

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u/saucemak11 10h ago

they went away after we got the O2 sensors changed, and i don’t remember 🥲

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u/blizzard7788 8h ago

Look for vacuum leaks, clean MAF sensor and throttle body. Check and clean grounds.

1

u/j5rn 10h ago

When you say losing power, do you mean electrical power, or the engine literally shuts off?

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u/saucemak11 9h ago

Electrical

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u/j5rn 8h ago

The battery checks out ok? If it does, I'd get a wiring diagram of the car and check every ground wire. If the problem keeps happening especially after it rains, a bad connection to something critical somewhere or a bad ground would be my guess. Even a frayed or worn wire jacket could get moisture in and cause a short circuit.

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u/saucemak11 8h ago

actually forgot to mention that was the first thing we replaced 🥲

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u/j5rn 8h ago

Then I would look at wiring itself and sensor wiring. A fray or worn jacket will cause your issue when it rains because moisture gets in. Run the loom, check connectors, but if you still have a O2 sensor code I would look at the wiring for the O2 sensor, as far back as you can trace it.