1996 XLT 4 banger. The Vacuum line from the intake to the charcoal canister has 2 switches{or censors} Is ther any way I can jump the wireing on the plugends to make the check engine light go out ?

Here is what you should have:

Cannister--------Solenoid Valve------Sensor------intake manifold

The solenoid valve is activated by the PCM to open up and allow vacuum from the intake manifold to suck out the fumes stored in the canister. The solenoid is a two wire connector that is just a simple voltage in/voltage out. So when the pcm grounds out the solenoid it opens. You can test your solenoid by disconnecting it and connecting it directly to the battery to listen for the "click" which is the valve opening. You shouldn't be able to blow through it when disconnected, but should be able to once power is applied.

The sensor is actually a temperature sensor. When this flow of fumes/air/vacuum is passed through it, it registers a change in temperature, indicating flow. It is a three wire hookup. One is a voltage source, one is ground, and one is a voltage reference. Electrically it is pretty much a potentiometer and the reference voltage changes because of the change of resistance. If the solenoid checks out fine it is probably your sensor that is bad.


There is probably no way of making a dummy circuit to clear the light, since the computer has to see a change in voltage at certain times. One thing you can try is to spray MAF sensor cleaner in the sensor (sometimes there is crud on the sensor wires from the gas fumes). DON'T TOUCH THE SENSOR WIRES WITH THE CLEANER CAN STRAW.

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Forgot to mention to check the vacuum lines in between each component for leaks.

You are getting code P1443 right?

__________________
Automotive Electronics Engineer
2000 XLT 2.5L A/T
Mods:
Explorer OHC
Explorer Autodim Mirrors w/ Autolamps
Explorer Sport White Face Gauges

thanks alot for the info