Hi All
I have 2003 F-350 7.3 , 6 speed
Had engine check light come on and it stays on all the time.. Scanguage 2 wont read any codes and if i try to clear them i just see the check light flicker
Truck runs fine, but i noticed that the IPR is now on 15% and icp is 725 at idle.. Both up from about 9 or 10 % and 480 psi
I changed ipc out with a new very cheap one off Ebay Light went off and IPR and Icp all back to normal. Ran for 5 minutes and switched off. Next day started great as usual, but light back on and IPR and ICP back to default numbers.. Took for a drive and everything seemed good, but when i tried to clear code while idling the engine just stopped. Started straight back up, but 10 miles later it stopped and wouldn't start. I pulled plug off ICP and started straight up and seemed to run fine, maybe a little down on power but still drive ok.. Im guessing original ICP failed as they do, but surely the second one should have lasted longer than 5 minutes ?? Could something be causing the failures ?
Any ideas and or advice would be much appreciated.. Thanks Greg
junk the ICP from ebay. i passed through 3 of them in a month. get a OEM one and look at the connector, if there's any oil in the connector, get a new pigtail
Thanks for your replies.. No oil in connector, so guess i'll just have to wait for my new motocraft ICP to come all the way from USA.
From what I have read, it will be ok to drive the truck with ICP plug off ! ??
Hi All
I have 2003 F-350 7.3 , 6 speed
Had engine check light come on and it stays on all the time.. Scanguage 2 wont read any codes and if i try to clear them i just see the check light flicker
Truck runs fine, but i noticed that the IPR is now on 15% and icp is 725 at idle.. Both up from about 9 or 10 % and 480 psi.
Thanks Greg
My ICP would idle at your upper marks when cold and then drop to your lower values once warmed up.
Did changing the ICP result in the CEL going off?
Are you certain your old ICP was failing?
You mention you might try and drive the truck with the new Ebay ICP disconnected but you might be better off re-installing the old original one if you are not sure it was actually malfunctioning.
Are you sure the range you posted above indicates a bad ICP?
Thanks
The figures I quoted do not change hot or cold and they are exactly the same with the ICP plugged in or unplugged.. Thats why i feel the ICP is stuffed. Also, when i first fitted the Ebay ICP the numbers went back to where they used to sit and the
check light went OFF.. Unfortunatly the very next time i started the truck the Ckeck light was back on and numbers were back to default or the same as with the ICP unplugged.
From all i have read... the ICP numbers are default setting, but not sure about the IPR..
Also... I have fitted the original ICP and have it plugged in, but still showing 720 or so psi and while idling it doesn't move at all, whereas a normal functioning ICP will move around slightly
OK.. New genuine Ford IPC Sensor arrived from USA.. Fitted it up in a couple of minutes and my check engine light is off and ICP pressures are reading normal. Took it for a drive and everything is going just great !!!
If you think its worth saving some cash and going for a cheap, non genuine ICP. Think again It's not worth it at all !!!!!!!!!!!!!!!!!!!!!!!!!!
Greg, give me a call next time you have a failure , i have a good range of spares , sensors and gaskets i can get you out of trouble so your back on the road and back to work, and then you can send me the replacement part at your leisure.
Glad to see you have it fixed .:smile2:
Thanks Mate. Very kind of you to offer.
I've been wishing I lived in Tasmania this last week.. Been up around 40 degrees c here in the South of WA
Thanks to everyone who took the time to reply
Hey Greg, you must have put the moccas on me mate :surprise:
after i posted that i could send you some parts to get you out of trouble, i decided to go to town to the truck stop for a tank of diesel, as i was getting ready to do a drive down the coast of Tassie, and when i started the truck and left the truck stop, i heard a big inj noise and the truck started hunting up and down so i pulled over to the side of the road and flicked my DP-Tuner into stock position , that evened things out some until i got back to the workshop, where i plugged into AE and and found my ICP and IPR readings all over the place , sooo i changed the ICP sensor out for the one that i just offered you .ha ha
Incidentally the ICP i removed was the old mushroom headed style Photo #1 , this is what i fitted Photo#2
Bugger !!!
Bet your glad you didn't send your spare over to me
My old one was the same as yours. Been there since I bought the truck new in 2003. The new one is a Ford part made in USA. If it lasts as long as the original I'll be very happy
When mine packed up it just set the check light on and went to Default. So wasn't really a problem.. Whereas the Cheap Ebay one set the check light and the truck just stopped and wouldn't start until I unplugged it. Was a bummer as it packed up the day before I fitted the new Adrenaline, so couldn't really test it. But now everything is good i can really feel the improvement ( And see it in the IPR and ICP readings)
Anyway. Glad you had your spare and your on your way again
PS.. Wish I has bought a few spares and the Adrenaline when the AU dollar was at it's peak
I would still have sent you the part old mate.
It didn't even throw a code, and it was still working , just not too good.:frown2:
The bad part was changing the ICP when the motor was hot so i could head off to the east coast, nothing stop me.:grin2:
On a side note your truck will run just fine with the icp unplugged. The pcm uses a default parameter to run. It's not as accurate as having a functioning icp.
I know someone who drove for a year with it unplugged lol
Hey blue , i think the fuel usage will increase though, anyway i had a spare with me it's just a matter of having a 1 1/8''open ended spanner with you to fit the new type of sensor.
Thanks again Googs.. Good to know your there if I get in the Poo !
Mine seemed to run fine with ICP unplugged. But certainly didn't have as much get up and go. Can't say i noticed fuel economy drop though.
New ICP are easier to fit. I modified a tube spanner designed for use on household taps. Works a treat lol. As for the old
style. I welded an the open end , end of a 5/8" spanner onto the threaded end of a bolt and that worked well. Soon I'll have a box full of homemade adaptations for working on a Powerstroke
Well I guess oil could interfere with the electrical signal and also ruin the insulation on the wires casing voltage leaks between the wires. Mine wasn't leaking, so i didn't change the pigtail even though i have a new one. Don't know what the guru's will say, but If i didn't have a new pigtail and the wires all looked in good shape.. I would just clean it out and make sure it was clean and dry before I plugged it back in !
Thats a good explanation. I have seen where even using very small amounts of di-electric grease on electrical connections was enough to result in mV changes in Audi vehicles. here is a great post describing ICP feedback voltage to the PCM:
So, I just cleaned up the connector with brake cleaner and plugged it into the new *GENUINE* ford ICP sensor, and the truck again idles just fine. I did put a dab of dielectric grease into the connector as well.
I think some of the issue with oil impregnated pigtails is how long the wiring has been exposed to the oil.
As for dielectric grease. There is certainly alot of misunderstanding on the various automotive websites on exactly what dielectric grease is for.
Did you put it on the rubber seal or on the wiring connection itself?
Dielectric grease is non-conductive and does create a resistance, albeit small.
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