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Sephia & Spectra

Warm up engine to normal operating temperature and let idle. Backprobe and measure voltage between MAF sensor connector terminal No. 1 (Red/White wire) and ground. At idle, voltage should be .8-1.2 volts. When engine is accelerated, voltage should be about 1.0 volts at 2000 RPM. If voltage is not as specified, replace MAF sensor.

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