6speedsd
New member
Early 03 truck, bone stock other than egr ******, 260ish on the clock. No start hot on me the other day, wouldn't build past 210 psi. IPR was opening to 84% while cranking. Sat for 20 mins, and fired right up, so I figured high pressure leak somewhwre. However, cranked every single time the rest of the day, hot or cold. Hasn't been Driven since. Drove it today to monitor, all was fine, then just shuts off going down the highway. Same scenario, won't build past 210psi, IPR wide open. Reads 14ish KOEO. But this time, I get the code for IPR open circuit. Finally got my hand to the harness and moved it a little. Still nothing...except about the 3rd try at cranking, it just fired off. Sitting on 210psi, then hits and jumps to like 2500. Ran fine back yo the house, and has cranked 4 times in the past 1.5hrs without a hitch.
I said all that to say this....if it were an open in the wiring, would it still read correct rough the ecm? I'm seeing 14% key on, climbed as high as wide open when it wouldn't crank (84%), and it reads normal while driving...fluctuates up and down with load. If it was an open circuit wouldn't I get a false reading with a scan tool? I'm going to tear into it and trace wires when i get a free day, but that was confusing me as to why it still reads normal with a scanner, even when it won't crank.
Maybe since its showing wide open but not building icp that reading is biased and inaccurate?
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I said all that to say this....if it were an open in the wiring, would it still read correct rough the ecm? I'm seeing 14% key on, climbed as high as wide open when it wouldn't crank (84%), and it reads normal while driving...fluctuates up and down with load. If it was an open circuit wouldn't I get a false reading with a scan tool? I'm going to tear into it and trace wires when i get a free day, but that was confusing me as to why it still reads normal with a scanner, even when it won't crank.
Maybe since its showing wide open but not building icp that reading is biased and inaccurate?
Sent from my SM-G950U using Tapatalk