1/2 throtle injector missing - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 6 (permalink) Old 03-04-2010, 12:15 AM Thread Starter
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1/2 throtle injector missing

Just swapped out ficm for a tuned one from eric. The truck starts cutting out about half throtle, any other throtle position it runs fine. Fuel Psi is 60psi, tested voltage on ficm with key on and while cranking 47.8-48.8volts. The truck runs fine with the stock FICM. Any Ideas?
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post #2 of 6 (permalink) Old 03-04-2010, 01:59 AM
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Re: 1/2 throtle injector missing

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Originally Posted by nastystroke04 View Post
Just swapped out ficm for a tuned one from eric. The truck starts cutting out about half throtle, any other throtle position it runs fine. Fuel Psi is 60psi, tested voltage on ficm with key on and while cranking 47.8-48.8volts. The truck runs fine with the stock FICM. Any Ideas?
What are your ICP readings? I had this issue also last month and MY ICP was leaking causing voltage issues. It wasn't throwing any codes for it either. Replaced ICP and fixed the problem.

I cant explain why but any time I tried to accelerate heavy it would cut out like a miss fire.
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post #3 of 6 (permalink) Old 03-04-2010, 03:11 AM
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Re: 1/2 throtle injector missing

you need to run a cylinder contribution test most likey its a injector


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post #4 of 6 (permalink) Old 03-04-2010, 04:18 AM Thread Starter
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Re: 1/2 throtle injector missing

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Originally Posted by SuperDutyDon View Post
What are your ICP readings? I had this issue also last month and MY ICP was leaking causing voltage issues. It wasn't throwing any codes for it either. Replaced ICP and fixed the problem.

I cant explain why but any time I tried to accelerate heavy it would cut out like a miss fire.
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Originally Posted by [email protected] View Post
you need to run a cylinder contribution test most likey its a injector
I have not checked the ICP readings yet. When i put the stock FICM back in the truck it runs normal, no miss firing. Still sound like a injector issue?
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post #5 of 6 (permalink) Old 03-04-2010, 04:45 AM
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Re: 1/2 throtle injector missing

What RPM is this at? Cylinder contribution test only works in the lower rpm region less than 1800 IIRC.

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post #6 of 6 (permalink) Old 03-04-2010, 09:15 PM
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Re: 1/2 throtle injector missing

are you sure the plugs are all the way in. did you bend any prongs on the ficm. the only time i ever had mine cut out at about 2000 rpm was a spool valve. i replaced it and everything was fine. its weird that it only does it with erics ficm.

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