I have a 1989 929, when its cold it runs real bad but once warmed up it has problems idleing, the car shakes and sometimes when stopped it stalls, mine is an auto, but when driving like on the highway it runs fine. Is your problem similar?
A vacuum leak is one possibility.
I think your alternator doesn't work properly.
The car was staying idle.
Idle Eyes ended in 1994.
To adjust the idle on Mazda 929 from 1992-1995.......on the top side off throttle body there is a idle air screw,turn screw cloclwise to reduce RPM. Question...is idle always high when hot or cold?
"Noisy" because the engine is vibrating more than normal? Low idle will cause the engine to shake. Low idle can be caused by - Dirty/clogged/sticking EGR valve - Vacuum leak or air intake leak - Dirty MAF sensor
One reason why your 1994 Nissan Altima could be sputtering at an idle is because of your spark plugs. It could also be caused by the idle sensor.
go on line search Mazda parts
I have a Mazda 2001 Tribute and I just replaced the Idle Air Control Valve (IAC). I searched for Idle Speed Control actuator and there does not appear to be one. The IAC is the silver module right on top of the manifold.
How do yu adjust idle in a nissan sentra
Idle speed is computer controlled and is not adjustable.
on top of the upper intake there is a screw. it can be used to adjust idle speed.