engine running and codes
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
That PCM/IDM communication error raises an eyebrow. One good test for this is look at your FIPW with KOEO. It should read 0.6 ms when the PCM and IDM are talking to each other. Without that 0.6 ms, nuthin' interestin's gunna happen when you turn the key. A failed communication will not allow the injectors to fire.
Posting Guru
Joined: Sep 2014
Posts: 2,404
Likes: 3
From: Asheville-where weird is
That PCM/IDM communication error raises an eyebrow. One good test for this is look at your FIPW with KOEO. It should read 0.6 ms when the PCM and IDM are talking to each other. Without that 0.6 ms, nuthin' interestin's gunna happen when you turn the key. A failed communication will not allow the injectors to fire.
Posting Guru
Joined: Sep 2014
Posts: 2,404
Likes: 3
From: Asheville-where weird is
Thank you for your response.
OK. As an update, I had never even looked to see what FIPW was at KOEO. So, in order to obtain more info for you, I went and hooked everything up to monitor FIPW and my FIPW is at 0.0 also at KOEO.
So, does this mean that the FIPW that is being reported for both of us is low?
If it is, then is actual FIPW 0.6 higher?
Or, Rich, are you reffering to a reading that Torque sees during a KOEO test?
OK. As an update, I had never even looked to see what FIPW was at KOEO. So, in order to obtain more info for you, I went and hooked everything up to monitor FIPW and my FIPW is at 0.0 also at KOEO.
So, does this mean that the FIPW that is being reported for both of us is low?
If it is, then is actual FIPW 0.6 higher?
Or, Rich, are you reffering to a reading that Torque sees during a KOEO test?
Logistics Pro
Joined: Apr 2010
Posts: 4,446
Likes: 26
From: Panama City, FL
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Laughing Gas
Joined: Aug 2008
Posts: 804
Likes: 0
From: Staten Island,hamilton ny
should i pull number 7 and move it to see if it follows,or could it be the tuning?i am going to try different tunes in a couple of weeks,should wait until after that?
Posting Guru
Joined: Sep 2014
Posts: 2,404
Likes: 3
From: Asheville-where weird is
At most I would swap out a CPS and rerun the test to see if #7 remains low.
If it stays with #7, I would then remove the tuning from the equation or at a minimum, change tunes and re-run the test.
Do you have single shots now?
If so, do you have a base flash on the PCM that will allow you to run the engine with the tuner removed?
Posting Guru
Joined: Sep 2014
Posts: 2,404
Likes: 3
From: Asheville-where weird is
Who flashed the stock flash.
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Laughing Gas
Joined: Aug 2008
Posts: 804
Likes: 0
From: Staten Island,hamilton ny
I installed a new idm,swamps hvhf idm,cleared all codes warmed up reset kam,run KOEO and get P16668 pcm /idm communication,and P0605 rom memory error.I also ran a cylinder contribution test and my error moved from cylinder 7 to cylinder 3.I am at a loss and hoping someone has some ideas