no more then 900 in park. 750 to 800 is good
No.
don't accelerate as much or change up a gear
Not sure if it's the same problem as my 93 GS, however I changed the PCV valve and that did it for me. About 12 bucks at Crappy Tire. or your local auto parts store.
Obviously depends on RPMs. Normally 15-20psi at idle. Could be as high as 30-40psi when the engine is under high RPMs.
It should idle at aprox 650 rpms warmed up.
between 500/750 depends on where the idle screw is set
lower rpms use less gas higher rpms have more power
Yes, at idle it brings the normal stock of 900 up to 1000 rpms
Check your battery, rpm computer controlled.
major vacuum leak?
bad knock sensor
on the end of the shifter there is a button. while doing 50 mph in drive hit the button and watch the rpms, hit it again and check rpms again. you will be in od when the rpms are at the lowest, hope this helps