Bad injector(s) cause stalling?

[SaNnDnSurF]

Just got it to repeat itself once wiggling the wires around the heater box can't get it to reenact though gonna let it cool down and try again.

 

[SaNnDnSurF]

If I unplug the icp the truck will die 15-30 seconds later does this mean anything?

 

[SaNnDnSurF]

Gotta be a wire chafed somewhere.

 

[Lassie]

It sounds like you're nailing down a wiring issue, so you you probably won't need this.

Bubble testing is a way to see if combustion gases are getting into the fuel. You pull the fuse for the FICM under the hood, and the fuel pump fuse in cab. Pull topside fuel filter. Crank the engine and watch for bubbles in the filter cavity. If you see bubbles, you move on to isolating which head.

 

[Lassie]

If you can get it started again, graph ICP pressure and voltage until it dies. If the ICP sensor cable is shorting across, the engine will think ICP was much higher than actually is and the IPR will relieve to much oil and could cause a stall. I don't know why this would be so intermittent though.

Also what year is this? Do you have the intake elbow with the throttle plate in it? EGR still there?

 

[SaNnDnSurF]

It's a 2005 egr welded shut thank you for that gives me somethin to try

 

[SaNnDnSurF]

Ok gave all the harnesses a thorough check can't find anything also couldnt get the truck to stall once, however when I unplug the icp while running the truck will make a quick jump in rpms then back down, also seems like the truck lacks power with it unplugged does this mean anything?

 

[Ross@Flyindiesel]

yea when you unplug it the motor goes into limp mode basically because it cant measure icp. call me tomorrow sometime so i can run back through everything with ya. i might have something up my sleve. lol you just need to get the truck to me i got you bro!

 

[G Racing]

As stated above a bad icp sensor will cause similar issues. Easiest way to check this is to look at icp with the key on and engine off. The sensor should read 0psi. If it is reading psi like 100-300 psi it will cause the ipr not to build enough high pressure oil and the engine will stall.

 

[Alfie]

^^ to add to the icp spec look at voltage usually .18-.24 is normal. And is what I usually see.

Do u have a logging device ?
Does the glow plug lamp turn on after it stalls?


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[SaNnDnSurF]

Thanks for all the help so far guys still waitin on an icp sensor to try, was able to get it on vid today
http://videobam.com/vYwjs

 

[SaNnDnSurF]

Hpo leak possibly?

 

[SaNnDnSurF]

...

 

[Alfie]

Leak no.

Something like this a scan tool is required to log all inputs and sync to see why it would stall.


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[powerstrokedkid87]

have you checked the cam and crank sensors?....

 

[SaNnDnSurF]

Cam sensor replaced

 

[SaNnDnSurF]

The ford guy seemed to think it was an injector shorting out

 

[04stroker]

You put the ICP sensor in? Only couple times I have ever seen something just like this it was a ICP sensor.

 

[Alfie]

You can disconnect the icp sensor and see if it does it when it's disconnected to rule it out.

Injector shorting out mmmmm. You would think it would have communication codes. I had an injector shorting out on a truck that would cause stalling events and even starting issues. But it did have an injector code for number 2. And it wouldn't run an injector click test. Would come back as a failed.


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[SaNnDnSurF]

Ross is bringing me a new one friday to try, no offense but wouldn't the ford tech be able to diagnose a faulty icp sensor? And no it's never died while unplugged.