Compression Ignition Addict
Join Date: Jan 2008
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AE guru's for help with readouts
Have a few ?'s on Autoenginuity for you technically advanced feller's.
I was dealing with a leaking Fuel drain valve and filter oring and after fixing purple powered the upper valley and then hose rinsed the area. When i went to start i had a CEL with stuttering idle. Drove into town to the local auto parts wharehouse and had them hook up the code reader and they said it had no codes. I cleaned the ICP and dried it and the connector and the CEL disappeared as well as erratic idle. Ordered AE and got it today and when i pulled codes i got a p1280 and p1211 both icp low and high voltage codes. Truck is to this point running fine now other than when you first start it as has been since i pulled ICP = the CEL comes on and stays , after about 45 seconds the RPM will bounce quickly to 1000rpm and then resettle at 700 and the light goes off. Idle is still a wee bit choppy , maybe 675-725. All other sensors look normal. On some extended driving with long pulls at WOT i am seeing 3000'ish for ICP and avg Duty Cycle of 40% or so.
My pulse width for the injectors is reading low though i believe - usually at .14 - .20 even on the hard pulls i saw .48 once. Is it not supposed to have a PW of 2.5-3.5 ?
I was planning on ordering a new ICP and connector.
Forgive my ignorance , i look forward to learning to use AE but some of the numbers are just foreign to me at this point as to what they mean and i appreciate any help in learning as this site has been the bomb for help over the last 6 years.
Thanks for the input folks-
Attached is a data log of it driving in the neighborhood- mostly slowly 30-40 mph out here in the hill country. Numbers are in the hot tune - stock yielded the 3000/40 at extended WOT
bottom orange is PW / red is ICP / blue is duty cycle
Sold 01 350 6" on 37's and mild mods, 00 X 4" on 35's, 02 f350 4" 35's molded from fan to drive shaft, ridin the 03 with nose conversion with 125k and counting upwards slowly.
Never had CNC on any of it, never will.
Take 3/4 of the info and recommendations on here with a grain of salt
Last edited by scagle1; 01-17-2013 at 06:56 PM.