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Teardown and Rebuild

TFaoro
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trreed

trreed

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Posted (edited)

So in case anyone was curious what this "Cold Rod" pump sounds like....  Here it is at idle.  As soon as the engine is loaded, even with just the A/C, it starts to behave normally.

 

Edited by trreed
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Me78569

Me78569

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Effective what is happening is the ecm is asking for a lower and lower fueling command until it "bottoms" out then it is cutting fuel in a last ditch effort to get rpms down.

 

Since the HO psg is calibrated to convert the fueling message according to smaller plungers it needs more fuel to idle. 

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TFaoro

TFaoro

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39 minutes ago, Me78569 said:

Effective what is happening is the ecm is asking for a lower and lower fueling command until it "bottoms" out then it is cutting fuel in a last ditch effort to get rpms down.

 

Since the HO psg is calibrated to convert the fueling message according to smaller plungers it needs more fuel to idle. 

So that would mean the HO fuel message would be maxed out sooner.... Hmmmm

I'll send ya a data log in a bit 

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jlbayes

jlbayes

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Posted
19 hours ago, TFaoro said:

Internet said otherwise.... Haven't seen one done yet. 

That's what I don't get... You can change this thing out very easily, so why don't they sell a replacement? Calibration can't make that much of a difference, especially on a stock truck. The ECM will compensate for everything but timing, which a degree you would never notice a difference.

 

It is exactly what they do with the hrvps on the test stands. Write up on compd showing what happens.

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TFaoro

TFaoro

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Alright I'm a bit confused.... The SO PSG is decoding the message and giving more fuel than the HO PSG was. 

So the HO pump must move more fuel at idle than a SO pump right? AKA the SO PSG is telling the pump to use more fuel with the same message?? @Me78569 sound right?

 

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TFaoro

TFaoro

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On 3/21/2017 at 11:19 AM, trreed said:

So that's why the HO pump idled around 11.22*?

I think that was because of RPMs. 

 

I ordered Larry B's wiring harness kit for the shutdown solenoid. Hopefully that'll be here soon. 

 

:stirthepot: 

IMG_20170320_201709917_zpsgiithuvv.jpg

 

IMG_20170323_085542680_zps5acjkor7.jpg

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TFaoro

TFaoro

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7 hours ago, jlbayes said:

Add. More. Clamps.

You said where they will fit, but where would that be?? It looks like they put them in all the good spots. Only place I can see is the 5/6 lines closer to the pump. 

6 hours ago, notlimah said:

 

You happen to know where to get clamps for a VP44? Pretty sure a couple of mine fell off  :(

@trreed might have some depending on what you need. 

Any idea where to get some clamps for my lines @jlbayes?

 

Got some work done tonight. I picked up a new T clamp from Central State Hose in Denver. I cut some 1/2in dowels to length, and split them at the ends. I will round the ends with the bench grinder when I get home. Most of the Crazy Carl kit should be at my parents place tomorrow. It'll be missing the throttle kit and the tunnel ram. They won't have tunnel rams until late next week, so I bought a grid heater delete to use as a spacer. I also bought a chunk of 3" exhaust pipe to use between the horn and the IC. I got 2 feet, so I'll cut it to length and weld some fat beads on it to keep the boots on under higher boost. @trreed what's the bolt sze and thread pith for the intake plenum? Hopefully the APPS kit will show up next week. If not, I'll build my own linkages for the time being. Diesel Auto Power can't seem to pick up the phone and call me back about my injectors. I can't even remember how long they've had them at this point, but I'm getting a bit pissy about it :mad: 

 

Old T bold clamp. RIP

IMG_20170323_194132329_zpsqj6y50nq.jpg

 

IMG_20170323_194213213_HDR_zpshifbiw5w.j

 

IMG_20170323_194221503_zpsroj6zkwp.jpg

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dripley

dripley

Posted
Posted

I got the part # for the clamps and googled it. Many mopar over stock places have them the little blocks are pretty reasonable but the like actual clamps and shipping. Made them a little pricey. But I need some too and will have to order soon.

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