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Originally Posted by 04badford
(Post 14529531)
correct me if Im wrong late built ICPV needs 0.2v to start ?
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Originally Posted by cheezit
(Post 14529546)
Per the request, your corrected }>. It needs the equivalent of a input equal to 500 psi. The icpv for that is .85v.
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Originally Posted by cheezit
(Post 14529543)
Vref is always 5v, its 5v on every sensor on a 5v ref system.
Im not sure if this is the question you asked. Sensor aka pcm imputs are 5 volts, solenoids aka outputs are alway 12v. Please understand always to mean in most cases in 12v systems on cars/trucks. Theres some old ball stuff out there with 12v sence wiring like what caterpillar does with the adms system. Sean https://www.ford-trucks.com/forums/p...ctureid=149188 |
Well ...................
I drove her pretty hard today. Broke the tires loose a couple of times on a few (near) WOT runs. All-in-all, I must say I am very happy w/ the performance. Very responsive. Now, that being said .......... I would have to say the results are probably inconclusive. The first WOT run, I blew quite a bit of smoke out. Who knows if I freed up the vanes a little or maybe even there was more of a bias on my old ICP sensor, because it is old (after all they only last a year and I am going on 8 yrs w/ this original sensor - lol). Then again, it could just be the oil change and wash/wax syndrome ............. you just convince yourself that it is better because you want to believe it. |
The only way to proge it per numbers would be to tee in a manual gauge.
But its interresting so far |
The bast way to avoid any visual bias would be a GoPro hanging
on the side to watch the pipe. Then have people watch the before and after. Then you let them pick before you tell them. Sean https://www.ford-trucks.com/forums/p...ctureid=149188 |
Originally Posted by cheezit
(Post 14529502)
Thats it.
It also hedges on how the pcm is set up to read the voltage. Josh was heading on this somewhat. So is the 03 pcm calibrated with a different starting point? I dont know Icpv on an 03 truck is .19v on avarge. Icpv on a later truck is .24v 8n avarge. That would be pid values at koeo. Now the pced no start for both truck states that .85v is what is need to start the truck. The pcm is not concerned with the pressure its only looking at voltage. Icp pressure is just a diagnostic pid for the tech. So looking at the charts its 400 to 500 psi bais @ the .5v differance. So does the old icpnsensor become latterly less biased as pressure incresses, does the pcm compinsate for it via programing, or is there a glich that one can exploit for a cheep but small bit of performance. I just dont know, but hey all in the name of fun.... ive had dumber ideas that have failed worse Im sure. Me - I am going to at least enjoy testing it for a few more days }> reps to ya when I can |
Ya I know were to find one, I just have to drive to dallas, I hate dallas. I may know were one ls local.
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Why not ask Anthony when he gets back about it.
I know that he said something about a guy near the old shop with a chassis dyno. that would really give some good data. Sean https://www.ford-trucks.com/forums/p...ctureid=149188 |
Now theres an idea
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I dont think all ever be an ex tech... not till im in a box anyway. I dont think thats something that ever goes away.
Working on 3612 and 3616 cats right now, have a 3516 comming in next. |
Originally Posted by cheezit
(Post 14529751)
Now theres an idea
to datalog it
Originally Posted by cheezit
(Post 14529759)
I dont think all ever be an ex tech... not till im in a box anyway. I dont think thats something that ever goes away.
Working on 3612 and 3616 cats right now, have a 3516 comming in next. Sean https://www.ford-trucks.com/forums/p...ctureid=149188 |
Originally Posted by cheezit
(Post 14529502)
Thats it.
It also hedges on how the pcm is set up to read the voltage. Josh was heading on this somewhat. So is the 03 pcm calibrated with a different starting point? I dont know Icpv on an 03 truck is .19v on avarge. Icpv on a later truck is .24v 8n avarge. That would be pid values at koeo. Now the pced no start for both truck states that .85v is what is need to start the truck. The pcm is not concerned with the pressure its only looking at voltage. Icp pressure is just a diagnostic pid for the tech. So looking at the charts its 400 to 500 psi bais @ the .5v differance. So does the old icpnsensor become latterly less biased as pressure incresses, does the pcm compinsate for it via programing, or is there a glich that one can exploit for a cheep but small bit of performance. I just dont know, but hey all in the name of fun.... ive had dumber ideas that have failed worse Im sure. I will say after all that reading I know a little more about the ICP's job and it's a bit more complicate than I imagined. Never did find out exactly how it works except it's referred to as a "variable capacitance" sensor in some International literature. |
Originally Posted by Rusty Axlerod
(Post 14530138)
So, do I win something? :) if so, do I have to share it with Josh? :-huh
I will say after all that reading I know a little more about the ICP's job and it's a bit more complicate than I imagined. Never did find out exactly how it works except it's referred to as a "variable capacitance" sensor in some International literature. |
Originally Posted by cheezit
(Post 14529546)
Per the request, your corrected }>. It needs the equivalent of a input equal to 500 psi. The icpv for that is .85v.
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