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So, throwing parts at it is not fixing it.
What Scan tool are you using?
Does it have a snapshot feature on it, that will record all data parameters (PIDs)?
Some scanners only record what is shown on the screen, not everything in the background.
Will it also graph instead of just showing a numbers?
I would setup a threshold to capture the movie at time when a PID goes high or low,
then come back play it back frame by frame to capture where it throws the code.
So all PID's before the event, then after the event (Throws the code) Cause (PID goes high or low) & Effect (Turns on CEL).

Now realize that you are recording at serial data from the OBD2 port.
versus real-time data at which the ECM and the sensors actually talk.
That's where trying to pinpoint to certain circuit & then using a labscope comes in to get down to fixing the issue.

Hope this helps.
 

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Ex- 6BT Square Body Man
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Discussion Starter · #222 · (Edited)
Finding out S&S may have sent me a LBZ/LMM pump.
If this is the case, I am going to be so pissed off.
I almost wrecked this truck because of this.

EDIT: S&S and John at Kennedy are saying there should be
no issue running this pump.
Need to do return rates tests.
 

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Ex- 6BT Square Body Man
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Discussion Starter · #223 ·
Gentlemen, I don't know if it was this simple.
I pulled the sender/strainer from the fuel tank all looked good there.
Next I put the legit Bosch fuel press regulator on.
Fired it up, the hiccup I noticed when it first started was gone and it sounded different. Soundedlike it is supposed to.
Next I cleared the FPR code (thought it would clear on it's own but it didn't)
Then I checked the fuel rail press. and it's right at 5000psi at an idle and ramps up as I give it throttle.
Let it idle for 30 minutes and no codes.

Another thing I noticed, the legit Bosch FPR had a part# that ended in 653, the one I took out ended in 574.
Both come up as LLY FPR's so who knows.

I am afraid to drive it for fear a code is gonna pop up.
 

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Gentlemen, I don't know if it was this simple.
I pulled the sender/strainer from the fuel tank all looked good there.
Next I put the legit Bosch fuel press regulator on.
Fired it up, the hiccup I noticed when it first started was gone and it sounded different. Soundedlike it is supposed to.
Next I cleared the FPR code (thought it would clear on it's own but it didn't)
Then I checked the fuel rail press. and it's right at 5000psi at an idle and ramps up as I give it throttle.
Let it idle for 30 minutes and no codes.

Another thing I noticed, the legit Bosch FPR had a part# that ended in 653, the one I took out ended in 574.
Both come up as LLY FPR's so who knows.

I am afraid to drive it for fear a code is gonna pop up.
Fingers crossed (y)
 
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2005 GMC 2500HD
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IDK why there different P/N for that component, I searched Gateway Buick GMC in Houston where I recently purchased a GPCM and the P/N for that came back a GM-97369850.
I see all sorts of price ranges online. Makes me suspicious of counterfeit parts out of China.
Heres the link to the dealer:Search Results | Dallas GM Parts
 

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Go Drive it, idle and give her the full test, romp on it, part throttle, full speed to emergency braking, so every type of scenario there could be.

I wonder if there is a difference for Medium Duty LLY vs. pickup LLY for parts on the FPR?
 

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Ex- 6BT Square Body Man
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Discussion Starter · #227 ·
Grabbed a pic of how the latest FPR came, first time I have seen the legit sticker on one.
The one from Rockauto didn't have it, wonder if it was fake, cost me $150.

Packing materials Font Plastic Packaging and labeling Transparency
 

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Grabbed a pic of how the latest FPR came, first time I have seen the legit sticker on one.
The one from Rockauto didn't have it, wonder if it was fake, cost me $150.

View attachment 646755
in looking at the bag, interesting that the sticker for
www.protect.bosch.com
with QR code & inputting security codes to verify authenticity

here is pic of the website.

Product Font Screenshot Material property Technology
 

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GM Part# 97369850 supersedes Part# 0928400574 / Bosch Part # 0928400653
Bosch 0928-400-653 GM Part# 97369850.
I get the different P/N now, but not the radical price difference between them. This is suspicious to me.
Another long shot question for ya, Have you checked all your fuses?
 

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Ex- 6BT Square Body Man
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Discussion Starter · #230 ·
Another long shot question for ya, Have you checked all your fuses?
I did check all over the fuse block, pulled every fuse and relay, also unbolted the wire blocks under where the fuses are.
All looked nice an clean, no corrosion or oxidation.

Knock on wood, it's running good now.
 

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So what is the outcome today?

Running good with No Codes?
 

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Discussion Starter · #232 ·

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Ex- 6BT Square Body Man
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Discussion Starter · #233 ·
Made a 60 mile trip to get my bed yesterday morning.
Put about 200 miles on it last couple days.
No codes but it idles funny when it's fully warmed up.
Gotta adjust the headboard and get the lights working right still.

Wheel Tire Vehicle Automotive parking light Car
 

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Discussion Starter · #234 ·
GM Part# 97369850 supersedes Part# 0928400574 / Bosch Part # 0928400653
Bosch 0928-400-653 GM Part# 97369850.
I get the different P/N now, but not the radical price difference between them. This is suspicious to me.
Another long shot question for ya, Have you checked all your fuses?
So the second FPR showed up and when I try to check it on protect.bosch.com it says serial number not recognized, same with the previous one.
So from what I have been able to figure out...
The one that came on the new injection pump is a possible fake.
The one I got from Rock Auto is a possible fake.
And the 2 I just got off Ebay are possible fakes.
Pretty sad.
 

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So the second FPR showed up and when I try to check it on protect.bosch.com it says serial number not recognized, same with the previous one.
So from what I have been able to figure out...
The one that came on the new injection pump is a possible fake.
The one I got from Rock Auto is a possible fake.
And the 2 I just got off Ebay are possible fakes.
Pretty sad.
So any recourse from Rock Auto, bet they wouldn't want the PR of them selling bogus counterfeit parts!

Until someone presses the issue, they will keep on passing bogus, fake, counterfeit parts, which how much has this cost you just in $$$$.
Plus all of the time, effort, sleepless nights! Do you have any hair left in your head???

I can hear their new jingle now!
"New Slogan, All the bogus counterfeit parts your car will ever need 2 or 3 times, ROCK-AUTO!"
 
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