Low Idle

[donaldii]

Could someone please give me advise. I recently purchased a 93 Metro Convertible with 93000 miles. This car has been well taken care of and maintance was done on a regular basis. I have 1 problem. When the car is warmed up and I am at a complete stop the idle drops very low and the car shakes. I've taken it to a Chevy dealer and I was told no codes were showing and it probably is from the car being old. Thats what the mechanic told me. I don't believe it. The car never stalls but I find myself stepping on the gas pedal slightly at a stop just so the car doesnt shake. By the way it is a manual trans. A tune up has been done recently but the problem is still present. Any suggestions or advise would be greatly appreciated.
Thanks

[geozukigti]

There's an idle adjust screw on the intake. It's under the "flange" where the air filter attaches, on the drivers side, toward the back. I don't have a picture, but it's not too hard to find. Turn that about a half turn to the left, and you should be good.

[donaldii]

I adjusted my Idle screw today. Everythings perfect. I can't believe the Chevy dealer did'nt know to do that. Thanks geozukigti. You were a big help

[insomica]

I just learn a few days ago that mechanic are just out to get you to spend more money then you have to. I bet he just wanted you to buy a new car.