Code p0103 truck has no power, it will not accelerate, and exhaust smells rich?

2002 CHEVROLET SILVERADO

150,000 MILES • 4.8L • V8 • 2WD • AUTOMATIC

JEFF HATCH

MEMBER
1 POST

I have replaced everything ie; sensors, coils paks, injectors, plugs and wires, mass air flow, MAP, fuel pressure regulator, TPS, and knock sensors. The previous owner replaced fuel pump and filter. I keep getting p0103 mass air flow circulation low code and engine misfire code. When we tried three different MAF's. What should I do next? Please help!!

Jul 10, 2022 at 10:22 AM

JACOBANDNICKOLAS

✓Experienced Mechanic
110,240 POSTS

Hi,

The idea that it has no power, and the exhaust smells rich, have you checked to see if one of the catalytic converters is clogged?

Do me a favor and look through this link. See if it mirrors what you experience.

https://www.2carpros.com/articles/bad-catalytic-converter-symptoms

If you look at the attachments below, they provide the diagnostics specific to the code. Take a look through them and let me know if you are comfortable performing them.

Take care,

Joe

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Jul 10, 2022 at 4:47 PM

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