Oldsmobile didn't make a Cutlass Supreme in 1998
Remove fuel tank for access
Oldsmobile Cutlass was created in 1961.
The most common reason for an engine not to start is a lack of fuel. A plugged air filter can cause and engine to idle rough or not idle at all.
1-2-3-4-5-6
The radio fuse on a 1998 Oldsmobile Cutlass is located in the fuse box inside the vehicle. The fuse box is located on the side of the dash near the driver's door.
I found it in my repair manual. It is about 26 to 32 psi.
there's a little screw right underneath the throttle linkage.
Oldsmobile Cutlass Supreme was created in 1966.
May be a defective thermostat or heater core
Oldsmobile Cutlass Supreme
In most 1990s and later vehicles you cannot adjust the idle. It is controlled by the ECM or computer. An idle that is not correct indicates something like a vaccuume leak or a sensor issue.