6speedsd
New member
I'm usually pretty good at figuring these things out, but I'm coming up empty with this one. 2005, with the works. All updated parts, ******s, ect. Got a hot no start last week. Was only building 300psi ICP. Unplugged ICP, still wouldn't start. Let it sit for about 20 mins, hit the key and it slowly rolled into a start. Drove to work, shut it down, waiting 30secs or so, hit the key and it fired right up. It's screaming bad STC, but I was pretty sure I changed that when I had it apart. Got home and looked through my box of goodies, and there it was....brand new stc kit in unopened bag. Figure great, that's my problem. Tore it down over the past weekend, only to find it already has the updated fitting. Changed it anyways while I had it apart. Ran it a while Sunday, and it wanted to roll into a hot start again. Didn't drive it this week, and had a chance to air test it today. Put 150psi of shop air in it and didn't hear a single leak....both with IPR closed and open. Part of me thinks I have a biased ICP sensor, but I'm not so sure. Readings per AE...
Key on,
ICP 0
ICPv .24
IPR 14.84%
Cranking it builds ICP slooooow, up to about 250-300 then it'll shoot up to 500ish and Fire.
While cranking,
ICPv .3-.4 until it fires, then jumps to 2.42v (but only shows like 650psi), then drops back to .8ish volts.
IPR goes to 84% pretty quick.
Once it's idling, EOT/ect maybe 100-120
ICP 580ish
ICPv .93
IPR 23%
Truck runs perfect. No codes, no misses, nothing.
If I shut it down, shouldn't it hold some pressure in the system? As soon as I shut it off, and cycle the key right back on, it's showing zero ICP, and has to build again before it'll fire.
Part of me still says it's a leak somewhere....then another part says my HPOP is crapping out....then another part says it's a bad ICP. Seems like a bad ICP that was reading low would cause my issue somewhat, but then again it should have fired when I unplugged it.
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Key on,
ICP 0
ICPv .24
IPR 14.84%
Cranking it builds ICP slooooow, up to about 250-300 then it'll shoot up to 500ish and Fire.
While cranking,
ICPv .3-.4 until it fires, then jumps to 2.42v (but only shows like 650psi), then drops back to .8ish volts.
IPR goes to 84% pretty quick.
Once it's idling, EOT/ect maybe 100-120
ICP 580ish
ICPv .93
IPR 23%
Truck runs perfect. No codes, no misses, nothing.
If I shut it down, shouldn't it hold some pressure in the system? As soon as I shut it off, and cycle the key right back on, it's showing zero ICP, and has to build again before it'll fire.
Part of me still says it's a leak somewhere....then another part says my HPOP is crapping out....then another part says it's a bad ICP. Seems like a bad ICP that was reading low would cause my issue somewhat, but then again it should have fired when I unplugged it.
Sent from my iPad using Tapatalk