Honda Acura NSX 1991 Service Manual page 242

Idle Control System
System Troubleshooting Guide
NOTE:
be inspected, starting with 0. Find the symptom in the left column, read across to the most likely source,then
the page listed at the top of that column. If inspection shows the system is OK, try the next system 0, etc.
on page 11-70.
PAGE
DIFFICULT TO START
E N G I N E W H E N C O L D
WHEN COLD FAST IDLE OUT OF
SPEC (l,OOO-2,000
ROUGH IDLE
WHEN WARM RPM TOO HIGH
Idle soeed is
specified
r p m (no load)
not increase after
initial start up.
On models with
W H E N
automatic transmis-
WARM
sion, the idle
R P M T O O
speed drops in gear
L O W
I d l e speeds drops
when air
conditioner in ON
Idle speed
fluctuates with
electrical load
W H I L E
WARMING UP
F R E Q U E N T
STALLING
AFTER
WARMING UP
FAILS EMISSION TEST
1 l-66
IDLE
ADJUST-
I N G
SCREW
86 72
I
74 76
I I I
refer to
a2 8 3
l