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
Take 3/4 of the info and recommendations on here with a grain of salt
Never had CNC's junk on any of it, never will.
Last edited by scagle1; 01-17-2013 at 07:56 PM.