Thread: Where do I find normal engine operating data???

Lkely you won't find anything though somewhere there could be something.

But what are some specific things you may be wanting to know??

Some of us know good ball park numbers of what things should be around.

Originally Posted by Badgers4life

This is the type of data I am talking about:

ABSLT TPS(%) Throttle % completely depends on your right foot, goes from 0-100%.

CALC LOAD(%) Goes with TP, depending on how much gas you are giving it and your speed and many other factors will tell you the load on the car. Numbers will vary so much.

MAF(LB/M) Again another thing related to throttle and air going past the MAF sensor. Not sure if that will read out in MAF Hz or not.

MAP("HG) Will range from roughly -20 to 0, Idle should be near -19 to -20 and will go up and down depending on engine speed and throttle %. Figure it can be around -10 to -15, this reads the MAP in/hgs which is vacuum. You can see it go to -22 to -25ish if you let of the gas a coast sometimes.

COOLANT(°F) Stock T-stat is a 195º, should see OP temps of near that within 5-10º.

IGN ADV(°) Another one based off many factors from engine speed, throttle %, if the car senses knock etc etc. Idle in the mid 20's, freeway speeds in 4th gear around mid 30's ish or so.

SECOND AIR If you can an air pump for cali emission, you'll see some sort of number here.

ST FTRM1(%) Short term fuel trims, number can vary soo much, I never really pay attention to them as they don't see to matter too much with our cars.
ST FTRM2(%)

LT FTRM1(%) Range from 0 to +16.4. Hopefully you see withing 5% of zero once the cat is hot. If you see +16.4 all the time, you have a vacuum leak. Long term trims are good for seeing you got a vacuum leak.
LT FTRM2(%)

FUEL SYS 1
O2S11(V) 1st oxygen sensor, can see from .050 volts to .980+ volts. It will always be bouncing back and forth quickly to show its working.
ST FTRM11(%)

O2S12(V) 2nd oxygen sensor after the cat. Normally stays around 400-600mv on the scanner once the cat warms up, they won't bounce around as much as the bank 1 sensor.

O2S21(V) Don't have one.

ST FTRM21(%)
O2S22(V) Don't have one.

I just want to know what values should I roughly be looking at at idle and 2,000 to 2,500 rpm. For example... I know that Ignition Advance is the degrees BTDC in regards to spark.. but I don't know what to compare it with...

Tired to write some stuff to help.