Cannot get AE to connect to my truck! Cranks and runs rough but can't pull codes - Ford Powerstroke Diesel Forum
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Old 04-19-2014, 12:39 PM
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Cannot get AE to connect to my truck! Cranks and runs rough but can't pull codes

2001 Ford F350 with the 7.3.
Recently replaced all 8 glowplugs and relay.
Had an issue with it starting cold so I replace the above parts, even after I replaced them it would still start hard. It cranks strong but does not fire until after a good amount of time cranking. It attempts to start then finally starts running but very rough.

Last week I replaced leaking hpop line o rings, and the truck started running better. Now its back to doing it again.
I pulled the ICP sensor and it was full of oil and kicked the SES light.

I ran a buzz test two days ago with AE. Now I cannot get AE to connect! I need to so scan the truck so I can see what my starting pressures are. I know it is a high pressure oil issue.
I have power to the cig lighter, I pulled all fuses and they are good. I plug the connector into the OBD port and it lights up but will not connect. I tried two different scanners.

What else could cause the scanner to not connect after it did a few days ago?
Does an unplugged ICP sensor cause it to not connect?
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Old 04-19-2014, 03:21 PM
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You get a WTS light when you first roll-on the key? (shows the PCM is running)

The unplugged ICP wouldn't have any effect on communication.

How does the OBD port look? No green pins?

Get it to run a bit if you can and go feel the exhaust manifolds to compare the heat in them to look for a dead side (don't need the AE for that )

You changed the configuration from OBD-II to J1850 PWM?
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Old 04-19-2014, 03:31 PM
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Quote:
Originally Posted by NoRalPh View Post
You get a WTS light when you first roll-on the key? (shows the PCM is running)

The unplugged ICP wouldn't have any effect on communication.

How does the OBD port look? No green pins?

Get it to run a bit if you can and go feel the exhaust manifolds to compare the heat in them to look for a dead side (don't need the AE for that )

You changed the configuration from OBD-II to J1850 PWM?
WTS light comes on.
OBD port looks fine.
I did not change any configuration on AE. It worked great two days ago!

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Old 04-19-2014, 04:12 PM
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You are definitely sure the cigarette lighter works? The one down by your heater controls not beside the airbag on/off switch?
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Old 04-19-2014, 04:21 PM
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Quote:
Originally Posted by schlutzer View Post
You are definitely sure the cigarette lighter works? The one down by your heater controls not beside the airbag on/off switch?
I plugged a charger in it and the light was on.
No fuses blown

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Old 04-20-2014, 06:05 AM
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What kind of charger?

You're not trying to power the computer you use the AE in from the cig ltr - are you?

If so, look for burned wires in the AE cable or USB end
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Old 04-20-2014, 06:53 AM
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You didn't put the charger to 24 volts did you?
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Old 04-20-2014, 05:02 PM
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The "Charger" I plugged in was just a cell phone charger.
I am going to double check AE works on my Excursion. If it works on that then I'll comb the truck over to see if I can find out what's going on.
This truck is driving my crazy lol
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Old 04-21-2014, 06:53 AM
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Update: removed the programmer from the truck, checked PCM connections and rebooted AE on my computer. I was able to connect and scan the truck!

ICP pressures were at 725, with the sensor unplugged.
Tried to run a cylinder contribution test and it said not available, the truck might be running a grey CPS which I heard interferes with that test, Ill double check.

When I started it, it cranked for a decent amount of time without firing then instantly fired right up nice and smooth but with a puff of white smoke.
I am convinced it is a high pressure oil issue, it seems like it is cranking to build pressure then it finally fires.
What tests should I run to prove or disprove my theory?
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