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I also have a 1995 GXE. check the OBD code by removing the small plastic piece next to the drivers right foot attached to the center console. If you open this space up you will find the main computer where you can check trouble codes without a code reader. Using a small flathead screwdriver turn the screw (gently) all the way to the clockwise limit and watch for a flashing yellow light on the right side of the speedometer. Some car you may have to return it to the counter-clockwise limit before the flashing starts. There will be a series of short flashes and long flashes. Count all the shorts in a chain to get one number and all the long to get the next number. Look for the signal to repeat itself (3 or 4 times). If it flashes 55 then that means there is nothing wrong.
Another thing to look at is vacuum leaks (gaskets and hoses) and the IACV valve (Intake Air Control Valve) which is near the water temp sensor down between the intakes. It has a big PLASTIC screw on top of it. I would encourage you to count the number of clockwise rotations it takes before the screw stops and write it down. Return the screw to the original position and start slowly backing it out until it runs smoother. Idle is raised by turning this screw counter-clockwise. Only adjust the IACV after the throttle position sensor pigtail is disconnected. Disconnect only with engine off. Good Luck and thanks be to Paul the mechanic that taught me how to do this. Charles
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