Hooked ae up to my e99 tonight to try and data log a run. Saw an option to read baro but its highlighted in red and doesn't even twitch. Not sure if its an option but cannot read it or an issue. No check engine light on. Intake air temp was reading solid 86 with N ambient of 75. Disconnected and cleaned the sensor, connector and seemed to start working. Ill see if I can get another.

 

Not sure on AE but Forscan has two listings for baro is listed w/ PCM PID's and the other w/ OBD2. I believe the PCM one reads correctly and the OBD2 doesn't, but obviously I could have that switched.

 

Been considering forscan lately. Had it hooked up to check codes. No check engine light , and to data log a run with the new .83 housing. Also have a stumble as it drops back to idle.

 

I can't make out what's what in the video but considering the work you've just done I'd start with verifying the air temp and manifold temp sensors are hooked up and snug. Probably oil temp ICP, and IPR too just to cover the bases. If all is well with the wiring Id probably start looking for boost leaks and so on.

 

I think you will like FORScan and the PID charting tool to see your data graphically - that will be helpful to see data glitches from malfunctioning sensors that can be missed in a gauge view.

I hear that return-to-idle stumble, but not sure what is causing it. Sticking IPR can do that, but maybe wait and see what your data logging shows.

 

I will look into that more tomorrow, forescan that is.

I noticed the ipr% drops to 10 ish % and icp drops to 460 470 ish at idle. Didnt know if that was a low icp for idle?

 

Those IPR% and ICP numbers are normal for a warmed-up engine if reasonably steady.

If you unplug the ICP sensor, start the truck, and blip the pedal, do you still hear a return-to-idle stumble?

 

The stumble isn't consistent and only at operating temp . Engine was at temp when it started last night, infact i had just attempted to data log two runs where i achieved 30 psi boost in 40 hp tow , empty,, under 2500 rpm. This isn't the first time the stumble has happened.. seemed to be gone after i changed the oil before the rock spring wy trip . The truck had begun to crank longer then normal on start up.. last time that happened it was low on oil, I was not low on oil this time. Changing the oil cured that issue too. changed the oil right before that trip.. by unplugging the ice, pcm defaults to 700. In doing so, what am I testing by doing so? Is it hitting the ipr in case its sticky or icp sensor is suspect? I unplugged the icp sensor over the weekend and it looked wet but no oil floating in the bottom of the connector. Cleaned with electrosol, blew dry and plugged it back in. I am not at the truck now but will give that a try tonight. Thanks

 

You will need to read baro via volts and not its actual value on your year truck.

I like 600psi of icp at operating temp idle with my 200/30

 

I didn't try php tunes to see if the ipr a nd icp were similar to aa. The ipr was new Motorcraft with the new adrenaline and prob only has 40k miles on it, if that. It could be sticky too and that could add to longer crank time. Hasnt done that since oil change though and this e99 has always let me know clearly when it's time for an oil change.

 

just ordered this one,

https://www.obdlink.com/products/obdlink-ex/?ref=forscan

 

Just trying to eliminate the ICP as a cause of the stumble - it's easy to eliminate by unplugging and letting the PCM use default values. There is a little difference on commanded IPR% when the ICP sensor is plugged in vs unplugged, but not that significant when the HPO system is healthy and tunes are mild.

Is the ICP original? If so, I'd be tempted to preemptively replace it.


If the stumble continues to occur with the ICP unplugged, we know that the ICP is probably not the cause. IPR valve would be the next suspect - though each truck is different. You make a good point on oil changes affecting this behavior. Honestly, if the engine just stumbles at return-to-idle, but does not try to stall, I'd just run it, as long as it's not causing driveability issues.

 

Thanks for the info. It is the new design, I changed it a couple years back and it came with a new pig tail because they were different. I bought it from the local Ford dealer. Always a possibility and the ipr was replaced with a Motorcraft when I installed the adrenaline hpop. That was 5 or 6 years ago as well which would be approx 40k miles ago. I will go test this out tonight. I did find Eric's comment interesting about his hybrid 200/30 injs preferring 600 ish psi. I am running hybrid 205/30 injectors from bitteroot. I ordered the USB dlc connector for forscan. Says the windows application also works with Android. "Should" allow me to use my lap top and a tablet I have once I source the correct USB to micro USB adaptor. Worth a shot and the. Maybe I can actually get some data logs that work. Ae has become very glitch for some reason.

There has always been a slight glit h dropping to idle with aa tunes. I have not tried php tunes lately but last time I did the glitch followed. Its annoying but and the longer then normal crank time combined had me wondering.. most of the longer crank time was resolved with the oil change though. The truck doesn't try to die and drivablilty seems unaffected. Had the ae connected last night and started looking at sensor inputs to see If there was something obvious. Never looked at baro before so I wondered on that front. I normally run an oil additive but did not at the last oil change as I didn't have any. Normally rev x and have tried archoil in the past. I do know a cap full of archoil in the power steering makes a difference. Never tried the rev x In the ps res Not sure the lack of additive would have such an effect but the thought crossed my mind.

ordered some archoil today, new air temp sensor as its original, ebp sensor as its original and a new motocraft ipr just because . They shot up in price !

same old soft codes were set, boost controller, ebpv and windshield wiper switch. The first 2 have been u plugged for sometime, the wiper switch is fully functional and have never known why the pcm sets that code. Has done it since 2012 at 80 k miles and still doing it all these years later at 146 k miles.

 

Plugged the old brick snap on scanner in.

at operating temp, made two pulls on the hwy and hit 30 psi in 80dd. 363/68-.83 exh, hybrid 205/30 injs, adrenaline hpop and high freq/volt idm from Chattanooga.

 

Doesn't do it on cold start or at 120* coolant temp. Icp is a pretty solid 525 on cold start and ipr% is a solid 10.

at operating temp with icp sensor unplugged.