stalling of 92 voyager 2.5i

Stalling, inconsistent idle speed and slow return to idle from speed can indicate different problems, many of which will NOT be detected by the computer.

It's very possible you have some vacuum leaks in the hoses on and near the throttle body. More specific information contained in this post I made earlier:

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. Or you may have vacuum leaks at thethrottle body-to-manifold gasket or the manifold-to-head gasket. You may also have problems with your "AIS Motor" (idle speed control motor). This is electrically operated and sometimes the wires "cook" and cause the motor not to operate. It is located on the throttle body. If grasping the wires and moving them while the car runs can change the idle quality, the AIS motor is suspect.

You may also have problems with your Throttle Position Sensor, which is also located on the throttle body. A problem with the TPS will usually be detected by the computer, but if the TPS sends a value that is within the appropriate range for the device BUT not correct for any instantaneous situation, the computer will not see a problem -- the engine will just run poorly.

Another thing to check is the hose for the MAP sensor. Sometimes these can crack or get water in them, which causes poor idling and stalling. Make sure the hose is free of water and obstructions and that it is not cracked.