Icp issues?
Fleet Owner
Joined: Nov 2003
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I am "hung up" on it starting (and idling) with .3 volts, and the pressure reading 700 psi.
Also it would be good to know what temperatures (oil, coolant) you are seeing when it misbehaves.
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New User
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yeah I just ordered a new one last night. I’m gonna replace it and see and if not. Then replace the pigtail again and also change oil back to 15-40 Schaefer’s and see what happens. Ittl have a weird idle surge once ina while while warm and also bucks once in a while on the freeway and just feels like it has overall less power. Almost like the injectors aren’t giving enough fuel (go figure right) I assume 190-200 eot/ect. When it’s cold it runs great.
Fleet Mechanic
Joined: Sep 2006
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From: Fresno, CA
Mark would his 03 have a different sensor than the 04+ that are located on the valve cover? I know the part numbers are different?
Fleet Owner
Joined: Nov 2003
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They are different, but I have tried switching them and have seen very little difference in performance. Ford says to not get the wrong one installed, but my experience says it doesn't cause any issues. Especially when an 03 runs the 04.5 and up sensor. It runs well and stands the heat better.
The IPR's are different for the model years (03-04 vs 04.5+), I truly don't know how the performance would be affected by getting the wrong one.
The IPR's are different for the model years (03-04 vs 04.5+), I truly don't know how the performance would be affected by getting the wrong one.
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New User
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They are different, but I have tried switching them and have seen very little difference in performance. Ford says to not get the wrong one installed, but my experience says it doesn't cause any issues. Especially when an 03 runs the 04.5 and up sensor. It runs well and stands the heat better.
The IPR's are different for the model years (03-04 vs 04.5+), I truly don't know how the performance would be affected by getting the wrong one.
The IPR's are different for the model years (03-04 vs 04.5+), I truly don't know how the performance would be affected by getting the wrong one.
I was doing some research and came across a video from diesetechron about the 03 icp and he also stated that using either or didn’t make a difference. The one I pulled off the truck in the beginning I believe was an 04+ since it had the black connector instead of the tan one. Waiting on new sensor to come and will report back after installing. Thanks guys!
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New User
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They are different, but I have tried switching them and have seen very little difference in performance. Ford says to not get the wrong one installed, but my experience says it doesn't cause any issues. Especially when an 03 runs the 04.5 and up sensor. It runs well and stands the heat better.
The IPR's are different for the model years (03-04 vs 04.5+), I truly don't know how the performance would be affected by getting the wrong one.
The IPR's are different for the model years (03-04 vs 04.5+), I truly don't know how the performance would be affected by getting the wrong one.
well. Got the new sensor and got it in. And getting the exact same voltage. This time I tried to start it and it wouldn’t start and three and icp pressure to high code. Reset my scanner and ignition and then it started. Still .30 volts at idle and .14 koeo. Reading like 870 pounds at cold idle.
870 lbs at idle cold
Fleet Owner
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New User
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another thing I just came across. It will not start unless I have my sctx4 plugged in and on the gauge layout. And just unplugged the icp and it starts without the tuner.
Last edited by gutlesswagon; Aug 27, 2021 at 05:30 PM.
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New User
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same thing. Same won’t start unless monitor is plugged in or icp is unolugged, same voltage tuned or not etc.
Fleet Owner
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If you have returned it to the stock tune, I don't see why the tuner would have to be plugged in to start.
So, with the ICP sensor plugged in, and the key in the "on" position ...... what is your v-reference voltage?
Then the same question with the ICP unplugged.
So, with the ICP sensor plugged in, and the key in the "on" position ...... what is your v-reference voltage?
Then the same question with the ICP unplugged.
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unolugged it is the same .14 koeo and .30 idle
it won’t start unless it’s unplugged and also noticed that the clicking kinda noise when your heating your plugs to start isn’t there when the icp is plugged in. When it’s unplugged the noise is there and it starts. I assume that noise is glow plugs heating up? Idk could be wrong but I’m stumped. Just replaced the icp and pigtail again. Soldered connections. Along with the ipr and pigtail with soldered connections as well. Using nothing but Ford parts