Injector buzz issues at key-on. - Ford Powerstroke Diesel Forum
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Old 11-04-2012, 09:18 AM
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Injector buzz issues at key-on.

Hey all. My truck is at 96k miles on the original injectors and ficm, as well as original strategies as far as I know.

As long as my truck had good batteries (as it does now) the injector buzz was nice and constant and sounded perfect when the key was turned on. Recently the buzz has started to sound slightly funny. A few day's ago, the buzz was essentially non-existant. The truck has been running and starting perfectly. On the trip after I really didn't hear any buzzing, I got back in the truck after stopping for lunch and the buzz sound as good as alway's.

I'm wandering if my FICM is starting to get weak. I'd like to catch it before it causes damage to the injectors if it is starting to go bad. I havn't done a voltage test yet and am solely going on sound at this point as I have been away at work for the past 8 out of 9 day's. I was just thinking about throwing this out there to see if this is a typical pattern that a failing FICM show's.
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Old 11-06-2012, 06:56 PM
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Bump.
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  #3  
Old 11-07-2012, 03:33 AM
GET MY ENEMA BUCKET BRO!!

 

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Spend the 300 on a cs
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Old 11-07-2012, 03:33 AM
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the typical pattern is to get a monitor and simply look at your voltage.
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Old 11-07-2012, 03:43 AM
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You need to find out what your ficm volts are. Best way to do that is with a monitor. I recomend the cts myself but there are cheaper options.

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