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Ok - I think what will make this easier to comprehend, Buddy, is if you lay back.....get comfortable........now take slow deep breaths......relax......slow breaths.....think peaceful thoughts......slow, even breaths........relaxing.......breathing........now, wipe computer synthesis...

Not perzackly - a coil around a magnet will give an analog signal something like a sine-wave when the tooth sweeps by, as in the speed sensor for the speedometer, and the two speed sensors in the 4L80E - those are 2-wire twisted-pair because of the low-voltage ac signal, and go thru an...

In elctronics, Discrete is transistors'n'diodes'n'capacitors'n'resistors'n'transformers'n'fuses'n'stuff - can have discrete digital and discrete analog circuitry Integrated Circuit is some of that discrete stuff scrunched together on a teeny silicon circuit board, usually in an...

For those interested, here are the answers - most readings depend on the quality of the DVM, sample time and the ability to read multiple waveforms:

Analog = infinitely variable signal, voltage can be negative or positive, frequency from DC to LIGHT Digital = signal is either on or off - signal can be negative going, as from +5v to 0v, or can be positive going, as from 0v to +5v - usually ground-based, 0v, upper level is supply-rail...

Still don't get it, do you Buddy?

This represents a digital signal, beginning at 0v, rising to 5v, falling to 0v - no analog about it, but definite frequency content: 5v_____ 0v_____ ________(a)|____________(b)|_________ What is the effective voltage from (a) to (b)? 5v_____ 0v_____ ________(a)|||||||_______(b)|||||||____...

No, Buddy, it's the uneducated or ignorant "more is better" misconception scenario - "if 1850psi is good, then 2750 is better, and 3700 gotsta be waaay better - hmmm......wunner how much real pressure this baby can crank out" - you know S set the pop pressures to ensure reduced camring\roller...

For those that are interested, ELI, or Voltage (E) leads Current (I) in an inductor (L), which can be used in describing what happens as flux density in an inductive conductor changes at power-on and power off - the FS is an inductive-conductor wound coil - current and flux density changes in a...

One thing to remember when asking for info from older Diesel mechanics: very few liked the big DD 8.2 V8, primarily because the valve rocker arm clearances needed to be adjusted every 12000mi, iirc - hassle enuff in itself, the injector pipes, similar to the 6.2\6.5, had to be removed to pull...

Yep, folks - nozzles, injectors; lift pump, transfer pump; engine oil, motor oil; tomato, tomahto; semantics indeed Oh, and shhhhh, quiet, everybody - let's not tell Buddy about pulse repitition rate and pulse-width modulation and effective voltage and digital waveform vs sinewave and RMS...

Devil is in the detail - "cracking the nut" is not loosening it entirely, merely backing off by 1/8-1/4 turn - and you can do all 4-umpteen if they are easy access - this engine will fire and run on ~4th bleed - rest can be done with engine running, or let it run at fast idle till smooths out...

I've ghost-written your post (prolly shoulda done it in a quote - sorry 'bout that - I am, as you may remember, legally dyslexic) - go back and reread it, see if that makes more sense, 'cause he's right - bleed these injectors "as close to the nozzle as possible" is the injector pipe fitting at...

That is correct, Schiker, and I appreciate your helpful input - that is the fuel metering valve, of which one inherent function is spill GMTDScan is a wunnerful pcware scantool, but that and a DVM does not tell the whole story - Closure Time pulse from the FSD module tells the PCM to start...

Our trucks have actual injectors with nozzles, 8 of 'em - pumped fuel is injected thru the nozzles into the precups in the heads - pumping the fuel up to injection pressure, which is part of the injection event, is begun, controlled, and ended in the DB2 and DS4 - there are several types of...

Then you did get GMTDScan, MGW?

Sun was behind huge cloud-bank, was a cool breeze, so I headed out to compare TECH2 with GMTDScan Tech and 'scope to clarify definitions - been over 5yrs since I thought in depth about any 6.5 stuff - soon's I hooked 'scope and PC up, invoked GMTDScan, and ECT reached op temps, sun came out...

E=IR(impedance) I=E/R(impedance) ELI DVM's do not tell the tale - PCM\FSD\IP signals are largely digital I explained most of this up in the main DS4 thread, Buddy - it would be a crying shame if you continue spreading all over the internet how wrong I am, simply because you cannot comprehend...

Correct Schiker - the FS solenoid closes the valve onto a passage - when the passage is open, pumped fuel is spilled, when the passage is closed, pumped fuel goes thru the timed port to the injector Pumped fuel at idle has max capability of ~35mm3 - pumped fuel at some upper rpm is ~66^mm3 -...

PCM sends the signal to the FSD module to close the FS valve to begin pumping for the injection - FSD sends a valve closure-time signal back to the PCM to indicate valve is seated and pumping has begun - this signal is resulted from the change in applied current as the solenoid engerizes, the...