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Type: Posts; User: AzDon

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    I had intended to use the GM factory VSS and DRAC...

    I had intended to use the GM factory VSS and DRAC module, not realizing that (according to the posted article) the drac converts the signal it receives to negative clicks to ground and depends on the...
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    I came to the conclusion that nobody else has...

    I came to the conclusion that nobody else has ever had to deal with this issue, so maybe I'm the guy that doesn't understand..... My mind is stuck in analog, so what I'm going to do is get a GM...
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    I'm not equipped to look at the data stream, but...

    I'm not equipped to look at the data stream, but I do have the "pull-up power" referred to in the article below on the ECM's VSSB wire (10 volts) so I believe that the VSSB is communicating properly...
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    It is definitely a white box and it came out of a...

    It is definitely a white box and it came out of a 91 Olds Custom Cruiser, which is essentially identical to a Caprice wagon...... The FSM calls the box a VSS Buffer and identifies the click outputs...
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    Yes, the FSM calls it a VSS Buffer.... not really...

    Yes, the FSM calls it a VSS Buffer.... not really sure if DRAC module is an appropriate description....it's a white box with a small PC board inside....
    FSM shows it producing 4000 click-per-mile to...
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    DRAC Module clicks?

    I recently completed my 69 van project with the complete TBI and harness from a 91 Wagon....<br>I also installed a new Intellitronix instrument cluster that fits 62-65 Nova and 67-70 G-Vans...<br>All...
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    I think the scheme you describe will fail to...

    I think the scheme you describe will fail to maintain the siphon effect on the tank supply line because you will be blowing pressurized fuel into your intake line and even if the loop was tight...
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    I didn't realize that I was causing more heat...

    I didn't realize that I was causing more heat than driving it around......
    I did the flush, retarded timing 6 degrees, and locked fan clutch since last driving it around......
    The initial timing is...
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    The radiator is mounted 18" ahead of the engine...

    The radiator is mounted 18" ahead of the engine and lower with a shrouded stock electric fan from an 85 z28... I have a 32lb cap on the radiator and a 16lb cap on the t-stat housing fill.......I also...
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    The entire drivetrain and ECM came out of a wagon...

    The entire drivetrain and ECM came out of a wagon that was identical to my daily driver that was crashed but drivable and it didn't overheat..... I run my daily driver with a gutted thermostat here...
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    So, slightly different test today.... From cold,...

    So, slightly different test today....
    From cold, I idled the engine in gear about 20 minutes to reach 190 where the fan comes on and cools to 174 in about three minutes when the fan shuts off......
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    My 66 short GMC van did 17 flat in the quarter...

    My 66 short GMC van did 17 flat in the quarter with six, three-speed stick and one barrel carb!.....These vans are a very stout but lightweight unibody with boxed sheet-metal frame rails spot welded...
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    Our local YouTube car guy Merlon (Merlons Old...

    Our local YouTube car guy Merlon (Merlons Old School Garage) is hooked up with the local towing guy, marketing and installing LS engines, mostly in Jeeps....
    I prefer pre-LT1 stuff and actually kind...
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    I actually have a donor c2500 Suburban (95) with...

    I actually have a donor c2500 Suburban (95) with a 454/4L80 that I fully intended to use until I started measuring......Being that the engine's cabin is fully surrounded by the travel cabin, I...
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    Thanks Carl.... It's actually Olds Custom...

    Thanks Carl....
    It's actually Olds Custom Cruiser and I got the zero degrees spec with the base timing link unplugged out of the FSM for these cars....
    Zero degrees becomes 17 degrees when I plug...
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    So, A bit more background... The radiator is in...

    So, A bit more background...
    The radiator is in the factory location, but lowered 3 inches and has an aluminum under-scoop that is the width of the chassis out to the front leaf hangers.... It has...
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    The water pump is AC Delco 88926233 ordered for...

    The water pump is AC Delco 88926233 ordered for 91 Caprice (serpentine reverse rotation)....
    The ECM is 16136965 with a four letter code of AYDM
    I haven't pulled the cover to look at the chip...
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    Thanks for the reply!..... The water pump is new...

    Thanks for the reply!..... The water pump is new ACDelco from RockAuto......The temp just creeps a couple of degrees at a time, not losing any temp (cycling) as it rises because I have the fan...
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    69 Van Project update

    First, I want to thank all of the folks here that helped me with schematics and with my thought process in figuring out how exactly to accomplish a running vehicle through sorting and cleaning up a...
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    Configuration of steering and shift columns is...

    Configuration of steering and shift columns is unique to these vans and really not adaptable to something else.... I'm just trying to understand what each pin wants to see and what it's function is...
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    So I'm guessing that the engine will start and...

    So I'm guessing that the engine will start and run whether it's in neutral or in gear, but that the ECM bumps the idle speed up when it's in gear?
    The fuel pump relay being operated by the ECM...
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    Thank you Tayto for your reply!... I have a FSM...

    Thank you Tayto for your reply!...
    I have a FSM for the 91 Old Custom Cruiser the harness came from
    I also drive a 91 OCC as my daily, so I can experiment some to learn answers to some of these...
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    I've kind of decided on the pruning scheme.... I...

    I've kind of decided on the pruning scheme....
    I printed a pinout schematic, but I'm confused about what certain ECM pins are looking for and whether they are "power output" pins or if they are...
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    Starting from start... need guidance

    It's been awhile since I gave the final spark and fuel scheme in the 69 van I'm building much thought because it was important to get the mechanical remodel completed into a functional shell...
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    I got a bit ahead of myself by starting to ponder...

    I got a bit ahead of myself by starting to ponder what the wiring harness might look like......I'm still fabricating the basic infrastructure changes to the van itself that become too difficult to...
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