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Thread: Driving me NUTS!!! - Main harness issues Reply to Thread
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  Topic Review (Newest First)
11-13-2019 07:16 AM
Hydro Soo, defective EBP sensor -- be sure and clean the tube when you install the new sensor
11-12-2019 06:39 AM
bismic
Quote:
Originally Posted by BigDeddie View Post
While the ref voltage is showing 5v in FORScan and by meter at the PCM, all of the sensors show less than 1v. Is this because the EBP plug is disconnected or is there something else? Oddly enough, the only related DTC I have is the EBP. See images below:
You have to be at full range on the sensors for the voltage to read close to the 5 volt reference signal voltage. As posted above, and on FTE, you don't want to see them at 5 volts when they are below max value.
11-12-2019 05:26 AM
BigDeddie Yes it was me (kmapro). I, honestly, don't come to this forum all that often. I usually use my work computer as I really don't use the computer at home much. The kmapro post was from my home computer and I couldn't remember my credentials. So, I asked for my username and password (my work computer remembers for me) - typed in my email address and it gave me the kmapro info. I did not even know I had two accounts on here. Sorry for any confusion.

Anyway, I was able to hook the truck back up to FORScan last night. I was both happy and puzzled at the same time.

While the ref voltage is showing 5v in FORScan and by meter at the PCM, all of the sensors show less than 1v. Is this because the EBP plug is disconnected or is there something else? Oddly enough, the only related DTC I have is the EBP. See images below:

KOEO:


KOER (idle):


DTC list:


Voltage on 5v ref at PCM:


And for the record, I truly appreciate ALL the help.
11-11-2019 02:45 PM
bismic So you were the original poster of this thread (BigDeddie)?

I thought it sounded/felt familiar (FTE thread)
11-11-2019 11:27 AM
kmapro
Quote:
Originally Posted by bismic View Post
I don't like to see the EBP volts at essentially 5 volts.

I can't tell you how many people just don't want to try running w/ the EBP unplugged. Not sure why that is ...

P0470, P0471, P0472 all indicate that there is a problem in that circuit (and most likely w/ the sensor itself).

P0405 indicates an issue w/ the EGR valve circuit also (even if the EGR system is deleted, an issue can be present in the EGR valve actuator).

Well bismic...it seems that you may have been right all along. I reconnected the 5v reference wire and then unplugged the EBP, went to KOEO and cleared all the codes.

Fired the truck up and went for a drive. Everything acted the way it is supposed to. The turbo spooled when it was supposed to. I was showing the right boost psi.

I have driven the truck about 75 miles with it like this so far and I still don't have a CEL - shouldn't the lack of EBP throw a code? I know I had one when I unplugged the ICP. My next step (tonight) is to reconnect the FORScan and see what it says this time.

Just out of curiosity, what the harm, or possible damage, of running with the EBP unplugged for a few days? I am not looking at a long term thing, just until the new sensor comes in. I drive 54 miles round trip to work and nowhere else.
11-06-2019 06:57 PM
bismic I don't like to see the EBP volts at essentially 5 volts.

I can't tell you how many people just don't want to try running w/ the EBP unplugged. Not sure why that is ...

P0470, P0471, P0472 all indicate that there is a problem in that circuit (and most likely w/ the sensor itself). Why ignore it?

P0405 indicates an issue w/ the EGR valve circuit also (even if the EGR system is deleted, an issue can be present in the EGR valve actuator).
11-06-2019 05:57 PM
Hydro Exhaust back pressure 51 psi engine off? -- seems wrong

Have you cleared the codes, and see what new ones popup?
11-06-2019 05:45 PM
BigDeddie KOEO:


KOER:


Codes:
11-05-2019 07:36 PM
bismic You test the EBP theory by simply unplugging it and driving it that way ......

Can't get better than free. We all like cost effective tests and solutions.
11-05-2019 06:42 PM
7.3lf550
Quote:
Originally Posted by bismic View Post
IMO it is possible that it is the EBP sensor.
I agree. However i hate to see him keep throwing parts at the thing
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