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Re: Boost = Hesitation
I forgot to mention how to test the O2 sensor:
These usually work on the range form .1 to 1 volt, .1 means lean mixture and 1 volt means rich.
You have to get down there with the sensor plugged in, backprobe the connector (PLEASE BE CAREFUL WHILE JACKING THE CAR, USE JACKSTANDS) and check the readings.
A normal voltage should be .3-.5 volts
Unplug a vacuum hose and the value should change after a few moments.
If the value doesn't changes try unplugging another one, this shouldn't be necessary but just in case.
If remains unchanged, then you have a bad O2 sensor.
You can try to test for rich condition using some starter fluid, throttle body cleaner or propane, just be careful as fire may arise; have an assistant and a fire extinguisher near.
Best regards,
Oscar.
EDIT: Or you could just use a Live stream capable scanner.
Readings should be taken between pins A and C
__________________
1995 Lincoln Town Car 4.6 Signature
1997 Pontiac Grand Prix GT 3.8
2000 Ford Windstar SE 3.8
Last edited by olopezm; 03-23-2011 at 12:10 AM.
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