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Old Oct 28, 2014 | 01:54 AM
  #1  
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ECM

Hi all does any one No were I can get a new or second hand ECM as mine does not want to talk to the scanners or my tuner ...
Thinking this mite be my shutting down problem ...
Thanks Mat
 
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Old Oct 28, 2014 | 02:23 AM
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Wait before you start throwing parts at it , lets find out the problem.
Does the wait to start light come on?
What year is the truck?
 
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Old Oct 28, 2014 | 02:27 AM
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Yes it does come on , it's a 2003 7.3 4x4 auto
 
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Old Oct 28, 2014 | 02:29 AM
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It seems to always shut down when it gets to operating temp, then wait it cool down to almost cold again then it starts back up ..
 
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Old Oct 28, 2014 | 02:34 AM
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Can you remove the tuner and try a test run in stock mode?
What tuner do you have?

Just for the ease of it keep the to one thread, it all the same problem.
 
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Old Oct 28, 2014 | 02:37 AM
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It's a predator tuner that came with the car wen I purchased it , it won't let me change the settings..
 
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Old Oct 28, 2014 | 02:49 AM
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Have you got the controller for the tuner?
If you have the Diablosports controller you can remove the tune you have on the truck and run it in stock mode.
I'm thinking you have fuel problems . Can read the codes with your tuner?
 
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Old Oct 28, 2014 | 02:56 AM
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Yea that's wat I've got but it won't let me do anything..I did get some codes of it :
P0603
P0231
P0113
 
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Old Oct 28, 2014 | 03:04 AM
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Okay the P0603 is a KAM error probably disconnected batteries at some time .
P0231 is fuel pump relay curcuit failure.
P0113 Air intake temp.

Are these resent codes , did you clear all the codes before you re scanned it?
 
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Old Oct 28, 2014 | 03:07 AM
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These r wat came up first then I cleared and tried rescan but nothing is working now
 
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Old Oct 28, 2014 | 03:10 AM
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Okay is the wts light still cumming on?
So the tuner is not responding to the pcm? and you can't get it back to stock mode?
 
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Old Oct 28, 2014 | 03:11 AM
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That's correct
 
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Old Oct 28, 2014 | 03:17 AM
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Okay is the wts light still cumming on?
 
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Old Oct 28, 2014 | 03:25 AM
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The IPR valve solenoid can be heat sensitive. Something about electromagnetic coils - they get weaker when hot and one on its last leg can work when the engine is cold and then not have enough oomph to close the valve when hot.

You need to monitor ICP sensor data and IPR duty cycle and watch it when it dies - if the ICP data is going down and the IPR duty cycle is going up - might be a good indication. If when you are trying to restart it, you can't get to 500 psi, that could be your problem.

But first check the tin nut on the IPR make sure it hasn't fallen off into the valley.
 
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Old Oct 28, 2014 | 03:28 AM
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Yes the wts comes on
 
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