[Roadster]

Ok, just looked up one of my previous threads dated 12-21-16 where I used the Tech 1 for the first time.
Here are a the results from those readings....


It will ask you for the 8th digit of your VIN#, which is "J" and will then ask you if a 94 Corvette. Press "YES" and you are in.....
The Menu....
F0....DATA LIST
F1....FIELD SER
F2....DTC
F3....SNAPSHOT
F4....MISC TEST

Started with F0, these results are with the engine running.....

ENG SPEED
870-890......as engine warmed up......830-815 rpm's
DESIRED IDLE
850.............as engine warmed up......812-800 rpm's

Engine coolant reading is off by 2 degrees from the IP with the tech 1 giving a higher reading by that amount.

MAP (KPa,V)
39 1.50-1.54-1.56

FUEL EVAP PURGE
0%

THROTTLE POS
0.52 VOLTS increased as throttle was depressed slightly .62 VOLTS
THROTTLE ANGLE
0%................................................ .............................2%

LEFT H025 BNK 1
53 mV
LOOP STATUS
OPEN LOOP

RIGHT H025 BNK 2
44-53 mV

ST FUEL TR BNK 1
128
LT FUEL TR BNK 1
115

FUEL TRIM CELL
16 CELL
FUEL TRIM ENABLE
NO

SPARK ADVANCE
12 degrees MPH 0 km/h 0

KNOCK RETARD
0
KNOCK SIGNAL
NO

SYSTEM VOLTAGE
14.1 VOLTS
FUEL PUMP VOLTS
13.5 VOLTS
EGR DESIRED POS
0%
EGR ACTUAL POS
0%
EGR PINTLE POS
0.60 VOLTS
EGR DUTY CYCLE
0%

IDLE AIR CONTROL
22
ENGINE SPEED
678-700 RPM's

FAN 1
OFF
FAN 2
OFF
A/C FAN REQUEST
NO
A/C REQUEST
NO
A/C CLUTCH
OFF
AIR PUMP RELAY
OFF
AIR CONTROL
DIVERT

MPH
0
Km/h
0

1-4 SHIFT ACTIVE
NO
ENG OIL TEMP
153 degrees by tech 1........149 degrees by IP
SEC VAC (kPa, V)
0 0.58

POWER SWITCH
NORMAL.....w/key turned....FULL
SECONDARY SYSTEM
OFF
FEDS/PASSKEY
OK
SEC AIR INLT SOL
OFF

CALIBRATION ID 9011

ENGINE SPEED @200degrees
691 RPM's
DESIRED IDLE
662 RPM's

After totally warmed up received these readings.....

LEFT H025 BNK1
as low as 75 mv to as high as 735 mv
LOOP STATUS
CLOSED LOOP

FUEL TRIM CELL
16 CELL
FUEL TRIM ENABLE
YES

Notice the IAC and idle readings warming up to full operating temps.
It appears that the idle may have not always been at the 650 range, but it was never at the 900-1000 range either.
So something changed after the plenum pull one month after these readings. It has to be a minor adjustment or minor vacuum leak, I just can't wrap my head around that the throttle shaft would develop that much play to increase the idle at times in one month.