Stumped
Post Fiend
Joined: Oct 2009
Posts: 12,123
Likes: 35
From: N. Fort Worth, tx
sync issues are caused by cam/crank sensor or there related parts.. ie wire harness, tone rings etc.
I dont guess you have a 2 channel lab scope handy?
like I said before check ohms then swich the fluke to freqs and retest. that will be as close as you can get
I dont guess you have a 2 channel lab scope handy?
like I said before check ohms then swich the fluke to freqs and retest. that will be as close as you can get
Thread Starter
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Senior User
Joined: Mar 2011
Posts: 102
Likes: 0
From: Alberta
No no lab scope. K ill go out and do ohm & freq test, have beer now so im back in my happy place haha. Not sure if this helps but no rpms on tach only when I have edge plugged in and set for rpm monitoring.
Super Moderator
Joined: Jul 2004
Posts: 21,113
Likes: 3,939
From: Ohio
See I told you someone would be along tonight and Moe, I wouldn't handle your world very well, I hate electrical issues. Come to think of it our electricians at work do not handle them very well at times.....
Thread Starter
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Senior User
Joined: Mar 2011
Posts: 102
Likes: 0
From: Alberta
hang in there someone will jump on at some point. What issues are you havin?
Im headin back out to work on the ole girl now.
Im headin back out to work on the ole girl now.
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Post Fiend
Joined: Oct 2009
Posts: 12,123
Likes: 35
From: N. Fort Worth, tx
you need to look at both sync and ficm syn. also make sure you geta freq reading while cranking. also check both crank and cam.
also please keep in mind that different year trucks have different issues. knowing what we are dealing with may help a little bit.
also please keep in mind that different year trucks have different issues. knowing what we are dealing with may help a little bit.
Thread Starter
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Senior User
Joined: Mar 2011
Posts: 102
Likes: 0
From: Alberta
I dunno if this helps but when it first pulled this no start condition i pulled a 2285 and a 2623 code. I changed icp and ipr and no change. Does that sound familiar in any way? Ive gone over every inch of harness and unless im blind i cant see any short anywhere. Im not totally sure how to do ficm sync without modis, I just finished checking wires from pcm to ficm and as far as i can get to cam and crank sensors. Brain is starting to heat up and patience is wearing thin with this mess. This is my daily driver and i need to get back to work.