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Re: 2000 Windstar not accelerating
Normally a small vacuum leak at intake wouldn't cause this symptom.
But a very big vacuum leak or a bad MAF sensor can cause that. Cause the more you press on the gas, the more air enter in the engine. If the MAF doesn't meter all the air correctly, PCM will not give enough pulse to injector so they can't spray enough fuel, so the excess of oxygen reduces the power of engine since there's more compression w/o enough combustion.
Clogged injector and low fuel pressure can cause that too.
It doesn't sound like bad O2 sensor.
So first check if MAF tube's collar is properly tighten and air filter properly installed w/o leak. Then test MAF sensor operation with a multimeter.
Then finally test fuel pressure. See if the problem happen only at high engine temp or always.
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2003 Chevrolet Impala LS 3.8L OHV
2002 Ford Taurus SE 3.0L OHV (sold)
1998 Ford Windstar LX 3.8L OHV (sold)
2002 Chevrolet Malibu LS 3.1L OHV (sold)
2004 Hyundai Accent GS 1.6L DOHC manual (sold)
1995 Oldsmobile Cutlass Supreme S 3.1L OHV (sold)
2002 Ford Crown Victoria Police Interceptor 4.6L SOHC (sold)
A Windstar without having the check engine light is not a real Windstar.
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