AE logging which program to open with?
Cargo Master
Joined: Aug 2009
Posts: 2,137
Likes: 13
From: Glendive, MT
Quick question. Looking at all 8 cylinders rotational velocity change.
1 - 0.1, 2 - 0.9, 3 - 0.9, 4 - 0.0
5 - 0.0, 6 - 0.0, 7 - 0.0, 8 - 5.9
2002, auto, stock. All injectors buzz good. Trying to diagnose one noisy cylinder (much louder tap, engine vibration on acceleration, hot or cold).
1 - 0.1, 2 - 0.9, 3 - 0.9, 4 - 0.0
5 - 0.0, 6 - 0.0, 7 - 0.0, 8 - 5.9
2002, auto, stock. All injectors buzz good. Trying to diagnose one noisy cylinder (much louder tap, engine vibration on acceleration, hot or cold).
Cargo Master
Joined: May 2010
Posts: 3,047
Likes: 10
From: Snohomish, WA
Quick question. Looking at all 8 cylinders rotational velocity change.
1 - 0.1, 2 - 0.9, 3 - 0.9, 4 - 0.0
5 - 0.0, 6 - 0.0, 7 - 0.0, 8 - 5.9
2002, auto, stock. All injectors buzz good. Trying to diagnose one noisy cylinder (much louder tap, engine vibration on acceleration, hot or cold).
1 - 0.1, 2 - 0.9, 3 - 0.9, 4 - 0.0
5 - 0.0, 6 - 0.0, 7 - 0.0, 8 - 5.9
2002, auto, stock. All injectors buzz good. Trying to diagnose one noisy cylinder (much louder tap, engine vibration on acceleration, hot or cold).
You can read about results of different CPS's on my site: Cam Position Sensor Testing
Your numbers look pretty normal from all the trucks I have checked.
More Turbo
Joined: Jul 2011
Posts: 594
Likes: 5
From: Full-time RV
Good to know, and about what I thought it would be. Yes, grey CPS (assume from recall, I just bought the truck in July). So would that cause a louder tap on one cylinder, and feel like a single cylinder miss on mild to moderate acceleration, especially between 1500-1700 RPM? I had read your CPS tests and expected #3 and #8 to run high.
Otherwise, truck runs great. Seems to have been previously well maintained. I did the 50 cent mod a couple weekends ago (and broke the passenger side connector, replaced the entire harness). Things were torqued down well on both heads when I was in there.
Mileage is about as expected (20.3 MPG on a recent trip with mostly interstate driving at average 65 mph unloaded).
By the way, I'm doing a 6637 mod this week after it arrives from Clay. All filters are new (oil change 2500 miles ago, fuel filter about 5000 miles ago, air filter about 3000 miles ago). Tranny fluid is bright pink. Truck used less than 1/2 quart of oil last oil change interval.
Otherwise, truck runs great. Seems to have been previously well maintained. I did the 50 cent mod a couple weekends ago (and broke the passenger side connector, replaced the entire harness). Things were torqued down well on both heads when I was in there.
Mileage is about as expected (20.3 MPG on a recent trip with mostly interstate driving at average 65 mph unloaded).
By the way, I'm doing a 6637 mod this week after it arrives from Clay. All filters are new (oil change 2500 miles ago, fuel filter about 5000 miles ago, air filter about 3000 miles ago). Tranny fluid is bright pink. Truck used less than 1/2 quart of oil last oil change interval.
Thread Starter
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Molon Labe
Joined: Dec 2006
Posts: 5,272
Likes: 1
From: Alaska
Ok, I just did some WOT data logging, ....
(thanks for the idea Paul 
)
Take a look at my duty cycle and ICP pressure. Does that look right how they seem to be going in two different directions?
I was in a 100hp tune with a stock 15* hpop & stock injectors.
also looks like I maxed out my IPR @ 65%. Is that good or bad?
(thanks for the idea Paul )Take a look at my duty cycle and ICP pressure. Does that look right how they seem to be going in two different directions?
I was in a 100hp tune with a stock 15* hpop & stock injectors.
also looks like I maxed out my IPR @ 65%. Is that good or bad?
More Turbo
Joined: Jul 2011
Posts: 594
Likes: 5
From: Full-time RV
Good. My engine-OCD-ness just dropped a couple degrees. 
First diesel, so anything that isn't completely normal sounding ends up worrying me. That, and an upcoming 1600 round-trip mile business trip (not pulling anything, just driving the truck) made me want to make sure I wasn't going to be hitting up the forums for help on some dark stretch of I-10 next weekend.
First diesel, so anything that isn't completely normal sounding ends up worrying me. That, and an upcoming 1600 round-trip mile business trip (not pulling anything, just driving the truck) made me want to make sure I wasn't going to be hitting up the forums for help on some dark stretch of I-10 next weekend.
Cargo Master
Joined: May 2010
Posts: 3,047
Likes: 10
From: Snohomish, WA
Ok, I just did some WOT data logging, .... (thanks for the idea Paul )
Take a look at my duty cycle and ICP pressure. Does that look right how they seem to be going in two different directions?
I was in a 100hp tune with a stock 15* hpop & stock injectors.
also looks like I maxed out my IPR @ 65%. Is that good or bad?
(thanks for the idea Paul )Take a look at my duty cycle and ICP pressure. Does that look right how they seem to be going in two different directions?
I was in a 100hp tune with a stock 15* hpop & stock injectors.
also looks like I maxed out my IPR @ 65%. Is that good or bad?
When you first get on it, your IPR DC will climb and your ICP should climb too. That is what you are looking at really. Can your HPOP maintain or hold a good pressure (greater than 2300 is good) while pulling hard. If you start putting in injectors that use more oil, you will need to upgrade the HPOP to keep them fed. Some HPOP's have no problem holding 2300+ psi, others may only muster up 1900. It does vary quite a bit.
Looks like your ICP was only at 1500 psi while pulling this run. What were you doing? Speed, Hill, Was theTC locked?
Cargo Master
Joined: Aug 2009
Posts: 2,137
Likes: 13
From: Glendive, MT
Franko:
I wish I could answer your question a little more intelligently. My ICP will hit 3000 psi before heading down to around 2000 or just under, but then I have a T-500 HPOP. My duty cycle also keeps climbing all the way through the run to 74 percent. I think you would bennifit from an Adrenelin or T-500.
I wish I could answer your question a little more intelligently. My ICP will hit 3000 psi before heading down to around 2000 or just under, but then I have a T-500 HPOP. My duty cycle also keeps climbing all the way through the run to 74 percent. I think you would bennifit from an Adrenelin or T-500.
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More Turbo
Joined: Jul 2011
Posts: 594
Likes: 5
From: Full-time RV
Did some data logging earlier. My HPOP is pulling about 2800 psi during WOT. Set mine up per the HPOP test document at the bottom of your page and ran around for a bit while logging data. Everything seemed to be right in spec with what was mentioned in the document.
OK, I'm done playing now. The neighbors are going to start complaining about the diesel idling out in the driveway.
Thanks for the input, Ken. I'll sit back now and watch Frank's results.
(Also just paid up to be a supporting member. This has been, hands down, the best vehicle-related forum I've ever been on.)
OK, I'm done playing now. The neighbors are going to start complaining about the diesel idling out in the driveway.
Thanks for the input, Ken. I'll sit back now and watch Frank's results.
(Also just paid up to be a supporting member. This has been, hands down, the best vehicle-related forum I've ever been on.)
Thread Starter
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Molon Labe
Joined: Dec 2006
Posts: 5,272
Likes: 1
From: Alaska
It makes sense about the spike, I was letting off quickly. Still looks like a weak hpop...I know the stock 15* pump is not up for what the chip is asking for.
Thread Starter
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Molon Labe
Joined: Dec 2006
Posts: 5,272
Likes: 1
From: Alaska
Franko:
I wish I could answer your question a little more intelligently. My ICP will hit 3000 psi before heading down to around 2000 or just under, but then I have a T-500 HPOP. My duty cycle also keeps climbing all the way through the run to 74 percent. I think you would bennifit from an Adrenelin or T-500.
I wish I could answer your question a little more intelligently. My ICP will hit 3000 psi before heading down to around 2000 or just under, but then I have a T-500 HPOP. My duty cycle also keeps climbing all the way through the run to 74 percent. I think you would bennifit from an Adrenelin or T-500.
Either would be an upgrade from my 266k mile 15* pump.
Thread Starter
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Molon Labe
Joined: Dec 2006
Posts: 5,272
Likes: 1
From: Alaska