What does latest flash do for me?
Posting Guru
Joined: Jan 2009
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The easiest way to find out if you have this flash is to let your truck idle for a couple minutes when its at opperating temp.The turbo will whistle for about 10 seconds then a slight rumble with a less pronounced whistle for 10ish seconds then rumble like a big block for about the same amount of time.Then start all over again.
Resident smarta$$
Joined: Aug 2006
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From: Oaks,PA
If you have the "buzz flash" which is the one before, you'll hear the injectors cycle, or " buzz " after you turn off the truck for @ 5 seconds. I think it was supposed to cycle the oil out of the injectors ( for better starts?) but obviously Ford came up with a better idea - Inductive heat . I got it in last fall and I would recommend it.
Fleet Owner
Joined: Nov 2003
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Some have speculated that this was the case. In all the research I have done (including Ford TSB's), it seems to point more at weak batteries and/or charging systems. If you have issues there, the extra load that the inductive heat flash uses will not help the life of the FICM. However, the root cause is really not the flash.
New User
Joined: Apr 2009
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Some have speculated that this was the case. In all the research I have done (including Ford TSB's), it seems to point more at weak batteries and/or charging systems. If you have issues there, the extra load that the inductive heat flash uses will not help the life of the FICM. However, the root cause is really not the flash.
Senior User
Joined: Jan 2006
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What is the best way to check charging system? Is it as simple as using a volt meter at the battery? What should the volts be at idle and does that depend on the condition of your batteries and lights on not on and so on? What should the volts be from the alternator. Thanks
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Fleet Owner
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I think one of the best investments is a load tester for your batteries. This will tell you if they are healthy or not - a simple voltage check will not. Also, any auto parts store can do the test AND test your alternator amp output and voltage regulation.
When you are driving (a few minutes after startup) your alternator will kick in and at that point your voltages should be 14 to 14.4. To protect the glow plug circuitry, the alternator operation is delayed after initial startup.
When you are driving (a few minutes after startup) your alternator will kick in and at that point your voltages should be 14 to 14.4. To protect the glow plug circuitry, the alternator operation is delayed after initial startup.
Senior User
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Bismic I have the high idel mod how long after startup will the Alternator kick in? I know I can not get a true check of my battery with a volt meter but can I properly check Alternator operation and if so what should my reading be at the batery cables with high idel on? 06 PSD. Thanks
Fleet Owner
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In a dual alternator setup, the PCM commands ONLY the lower (secondary) alternator to be off upon initial startup. In a single alternator setup, the alternator is operational at startup (only makes sense in re-thinking it).
Here are my voltages:
- Voltage w/ key off - 12.5
- Voltage w/ key on engine off (after glow plug light turns off) - 12.0
- Voltage after startup - 12.0
- Voltage apprx. 2 minutes after startup - 13.2 (seems to steadily ramp from 12.0)
- Voltage apprx. 4 minutes after startup - 13.6 (seems to slowly but steadily ramp from 13.2)
Senior User
Joined: Jul 2006
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From: ROUND ROCK, TEXAS
This post came at the right time bc my new to me 2004 f250 was making the stuttered turbo whistle and i was just going to take it in to get serviced for it, so thanks again from saving me look like a jerk at the dealership. Should it cycle the turbo this way also while driving at low speeds? ie like it does when idiling.
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