SEIC aux Idle control problem
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SEIC aux Idle control problem
I have a new 09 F450 V10 cab chassis. I have a Mobile B-47 drilling rig mounted on it that is pto powered (PTO to hydraulic pump) similar to a wrecker or dump truck. We decided to go with a V10 because we are tired of fixing the 6.4 every other week. I basically need to be able to control the throttle from the rear of the truck to operate the drill. I followed the SEIC instructions as found in Ford's body builder guide (https://www.fleet.ford.com/truckbbas/non-html/Q108.pdf). I wired it all up to a potentiometer (rotary switch) on the rear of the truck so I can raise and lower the idle from there. I wired the SEIC to the #3 upfitter switch. So I turn on the #3 switch, idle elevates and can be controlled by the potentiometer and it all works fine for a couple minutes, then for no apparent reason the SEIC is disabled and idle returns to normal. I then have to go back to the cab, cut the #3 switch off and back on, SEIC starts up again and works for only a minute or two and then is disabled again.
I have been digging for any info on this and am having a very hard time finding anyone who knows anything about this stuff. Even the Ford dealer mechanics are clueless. I am hoping maybe you guys can point me the right direction to getting this solved.
I have been digging for any info on this and am having a very hard time finding anyone who knows anything about this stuff. Even the Ford dealer mechanics are clueless. I am hoping maybe you guys can point me the right direction to getting this solved.
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Joined: Jul 2002
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From: Long Island USA
First, WELCOME to FTE! 
Second, I moved this thread to the Superduty forum, because some of the diesel people have done the high-idle thing and might have some input on why it stops working.
For the time being, could you wire in a switch at the back?
I'm going to read that PDF you linked to.
Second, I moved this thread to the Superduty forum, because some of the diesel people have done the high-idle thing and might have some input on why it stops working.
For the time being, could you wire in a switch at the back?
I'm going to read that PDF you linked to.
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
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From: Long Island USA
Couple of questions:
In that manual, it says you have to signal PTO_Engage AFTER PTO_Mode, and only after the output PTO_Indicator is grounded.
If you're not doing that, I bet that's the problem.
You could probably wire up a relay in such a way that when PTO_Indicator grounds, the relay energizes the PTO_Engage input so you don't have to have another switch back there.
In that manual, it says you have to signal PTO_Engage AFTER PTO_Mode, and only after the output PTO_Indicator is grounded.
If you're not doing that, I bet that's the problem.
You could probably wire up a relay in such a way that when PTO_Indicator grounds, the relay energizes the PTO_Engage input so you don't have to have another switch back there.
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Yep I have a relay wired up just like you said, so that the throttle control is activated a few seconds after flipping the switch for high idle. It all works fine for a few minutes, but it eventually disables itself and idles back down to normal. Seems like it mostly does it when I am running the machine and the pto is under a bit of a load. According to that manual, looking at the list of disablers, I first thought that maybe the trans or exhaust was getting too hot and tripping it, but I dunno. Very very frustrating
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From: Charleston
SEIC Drops Out
I am at a loss to remember where i found it but i read recently that SEIC on the V10's could be disrupted by a speed signal from the ABS system caused by excessive vibrations from a PTO driven accessory
From what i remember slight wheel movements register with the ABS which is networked with the PCM. The ABS reports the motion and the PCM discontinues the SEIC.
I remember their being a fix for the problem, and apologize for not being able to provide a link. I will keep looking.
JAQ
From what i remember slight wheel movements register with the ABS which is networked with the PCM. The ABS reports the motion and the PCM discontinues the SEIC.
I remember their being a fix for the problem, and apologize for not being able to provide a link. I will keep looking.
JAQ
Cargo Master
Joined: Dec 2003
Posts: 2,022
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From: Redford, Mi.
Try this, I'm no electrician but he had the same problem on a 07 and got it fixed, just finished reading it and your question popped up, hope it helps.
https://www.ford-trucks.com/forums/5...-v10-seic.html
https://www.ford-trucks.com/forums/5...-v10-seic.html
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