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9
Cranks for 2 seconds and quits
Is that something a dent in the cover could be shorting out causing my problem? -
9
Cranks for 2 seconds and quits
Yes.5v to cam sensor,which I have.12v to the crank sensor,wich I have.my volts are correct.my grounds are good.i had to swap harnesses so I know the block grounds are good. I have fluctuating voltage on the signal wires.j don't know what those should be but I assume the sensors are working? -
9
Cranks for 2 seconds and quits
What's inside the ficm?I just thought about it and remembered mine has a dent in it from people who worked on it before we got it. -
9
Cranks for 2 seconds and quits
Does the ficm see the crank sensor signal?And what pin would it be? -
9
Cranks for 2 seconds and quits
Unfortunately I don't have another truck to take pieces off.i have a couple trucks but they're lb7s. -
9
Cranks for 2 seconds and quits
Checked that too.i don't see how people can mix them up.the crank sensor plug on mine will only reach the crank sensor. I unbolted the harness holder so I could swap the plugs around to see if that was it,nope. -
9
Cranks for 2 seconds and quits
Ok vats relearn done nothing.another new crank sensor did nothing.put a cam sensor in place of crank sensor and it'll crank with the key till the cows come home. -
9
Cranks for 2 seconds and quits
Has no security light but I'm out here trying the relearn anyways -
9
Cranks for 2 seconds and quits
As far as I know,yes.i had original lly engine running. -
9
Cranks for 2 seconds and quits
It won't crank long enough to do anything but laugh at me -
9
Cranks for 2 seconds and quits
Motor only has 86,000 miles.ran beautiful before this. -
9
Cranks for 2 seconds and quits
But if it's a vats issue,why would it crank it's nuts off If i put a cam sensor in place of the crank sensor? -
9
Cranks for 2 seconds and quits
I do not believe this truck has the vats.i could be wrong.i could try the relearn in the morning. I'm dealing with an lbz running lly injectors,reluctor wheel and eletronics. -
9
Cranks for 2 seconds and quits
This is what it was doing before I found out I was dealing with an lbz. Even then before I got it to do that it was having the crank for 2 seconds thing.suddenly it quit once I got it to fire on it's own(I'm not a diesel noob,no need to go into the ether rants please.). Now I can't even get it... -
9
Cranks for 2 seconds and quits
Just so you know.ive been a mechanic for 30 years.but never played with the duramax.i was 7.3 stroke guy. If you got some technical things you need to ask or have me do,please make simple for me to understand and I can do it.i have a snap on modis scanner,test light,good multimeter. I need to... -
9
Cranks for 2 seconds and quits
Yes.i ordered another ckp sensor today to be damn sure. Yes I kinda figured that was due to the lbz reluctor with the extra tooth,(lly-57 lbz-58) I can't even get to atleast do that again.the 2 times it did fire for a split second using a cam sensor as a crank sensor it sounded like it... -
9
Cranks for 2 seconds and quits
Hopefully I'm in the right spot here. I've got an 05 c5500.had a motor put in it about 4 years ago.never ran since.we bought it.i got it running.didnt sound healthy at all.smoked like a bus and would randomly die.figured it would be quicker and easier to swap a known good motor into it.and... -
9
LLY vs LBZ Reluctor Wheel.
You are looking at the back side of the wheel.in the picture it shows to take the bottom tooth after the gap off.in the truck with it still in place,looking through sensor hole it would be the top tooth after the gap. I know I'm necroing an old old thread.but I been having a problem with a...- 94f450sd
- Post #18
- Forum: Duramax Hard Parts