Scanmaster Readings "help"

black84

Member
Joined
May 18, 2003
I installed my scan master today and as far as I know it seems to be working. I am still in the process of learing how to decipher all the readings. So here goes:

Idle / WOT
O2 all over / 710
AF 05 / 224
L8 42 / 255
BAT 13.2 / 13.0
INT 124 / 128
bL 119 / 124
CLT 206 / 210
ATS 122 / 114-118
r 675-700
TPS .44 / 300 :confused:
IAC 05 / 62
cc all kinds of numbers
NAL what is this

Correct me if I'm wrong, but do you see the knock readings in the first mode prior to hitting the mode button and it changing to AF reading. I believe you also see the o2 readings along with the knock readings together right? Anyways while driving the vehicle it never showed any knock and this was a 15 psi of boost indicated by my VDO gauge. Can anyone please tell me what these readings mean good or bad.. Thanks Andy :confused:
 
Originally posted by black84
I installed my scan master today and as far as I know it seems to be working. I am still in the process of learing how to decipher all the readings. So here goes:

Idle / WOT
O2 all over / 710
AF 05 / 224
L8 42 / 255
BAT 13.2 / 13.0
INT 124 / 128
bL 119 / 124
CLT 206 / 210
ATS 122 / 114-118
r 675-700
TPS .44 / 300 :confused:
IAC 05 / 62
cc all kinds of numbers
NAL what is this

Correct me if I'm wrong, but do you see the knock readings in the first mode prior to hitting the mode button and it changing to AF reading. I believe you also see the o2 readings along with the knock readings together right? Anyways while driving the vehicle it never showed any knock and this was a 15 psi of boost indicated by my VDO gauge. Can anyone please tell me what these readings mean good or bad.. Thanks Andy :confused:

The O2 readings will wander all over as the ecm tries to average a 14.7:1 AFR, at any condition other then WOT.
AF is air flow lower numbers at light load higher at WOT, you just need to get familiar with what your engine reads, when it'd running well, that seems fine.
L8, is actually LV8 and is for how the ecm calculates engine load. Again, low at idle, and higher as you load the engine more.
BAT battery voltage OK
INT/BL fueling corrections that the ecm makes. 128 being perfect. your OK
CLT coolant temp
ATS air temp
r RPM
TPS Throttle position sensor, lil high but no biggie
IAC Idle air control how far open the IAC motor is open. with a cold engine it needs to open more, ie it's the choke.
CC cross counts tells how active the O2 sensor is
MAL Malfunction codes.
 
Your TPS and your O2 counts should be higher at WOT. TPS should be higher than 4.5 and O2 numbers should be mid to high 700s.
 
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