Ωhm

128=Normal or Fuel Trim centering point. ECU is adding fuel (increasing INJ PW time) while attempting to enter CL (ST≈250). This matches what your 02 is seeing (LEAN). Don't know why STFT levels out at 57-80. 02 must be seeing RICH. Does 02S rapidly switch between RICH & LEAN when in CL mode?

Some what Off Topic and I have no expertise, but I've noticed around town here, axe throwing is becoming popular for both indoor and outdoor fun.

Don't forget the Commanche Trail.

02S could be telling you the truth. What's your STFT/LTFT values?

Only the Crank Position Sensor (CPS) will generate AC voltage, not the SYNC sensor. Circuit for SYNC sensor.

Okay, I'm with you now.

Isn't this TDC.

Where would the rotor be if you were at TDC or 20°BTDC. Possible cause for weak spark.

NOCO GB50 coming my way. Thanks to all.

If you have room, and want to, hang this on your wall. Its just a piece of paper in my pile of life. LSR_2_1.pdf

Make sure its not hung upside down.

Typical cold start.

Idle after the drive video: Engine VAC at idle hovers around 16.2-15.9"hg (should read 18"hg and above). Your VAC reading tells the ECU to add fuel or increase INJ PW time. If you can, get a mechanical vacuum gauge and see if it correlates with your REM VAC reading. Like a MAP test.

If your goal is to eliminate C101, then just replace the Engine Control Harness and the Injector Harness. Leave the Engine Harness still in place.

The ECU is senseless of fuel line pressure. It will always pick the Fuel Pump Relay for 2-3 seconds at KEY ON.

RENIX 4.0L's I think has a normal CRANK time between 7-9 seconds. Engine must reach a least 350-400rpms before the ECU can even start to think about STARTING. Both battery and starter condition come into play here. Don't touch the gas pedal while CRANKING.

I'm eyeballing the GB40.

"Better VAC, hell ya" 746 INJ's I believe delivers more fuel so STFT needs to cut back on INJ PW time (mS), but well within the Range of Authority for the ECU to control.

Using a voltmeter or 12vdc testlight (preferred) check for B+ on the following pins (use battery negative terminal for ground): D1_5: B+ (Hot at all times) D2_4: B+ (Hot during KEY ON/CRANKING). D1_6: KEY ON (B+ (Hot for 2-3 seconds)) or CRANKING (B+ (Hot during CRANK)).

You guys are making this easy for me.

Looking to buy one. The smaller the better and I don't need options (ex: air pump). They can be pricey.

Using the feature to reuse a photo/video without taking away for your allotted storage space. Goto: Other Media (lower right corner of this responds box) Select "Insert existing attachment" If you name your photo/video with a easily remembered file name the search function works well.

Camaro AFC or NFC

Understood

@Pete M Good eye. Make's it extra funny.