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Author Topic: 2018 Ford F150. How did you suppress noise?  (Read 544 times)

AI5BC

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Re: 2018 Ford F150. How did you suppress noise?
« Reply #15 on: October 16, 2022, 07:15:40 AM »

I bet you made a ham mistake. You ran the negative from the radio all the way to the battery term post, didn't you? If you did, you got exactly what you asked for. Take the battery negative to the chassis.
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KM3F

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Re: 2018 Ford F150. How did you suppress noise?
« Reply #16 on: October 16, 2022, 07:45:09 PM »

Don't know who your reply was meant to be to. The Power point is what I plug into.
Did not run any wiring anywhere else.
The Antenna base or Coax and Radio are not even grounded.
All power control is through a module that is time and function controlled.
All loads are meant to be drawn though the sensor, so the battery >usage life< is detected and calculated for every parameter, battery life and performance, is dependent on.
This is why a new replacement battery should have a Re-Set done to the battery management system. That does not just happen with a power down as the reason for the re-set by tool to access the program.
There is not one circuit that runs direct to the battery terminal in this vehicle.
Battery management in these late model vehicles is no longer old school.
A lot is going on that depends on it.
If there is a difference of opinion, take that up with Ford.
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K4AX

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Re: 2018 Ford F150. How did you suppress noise?
« Reply #17 on: October 17, 2022, 03:31:47 PM »

For me on the F150 over the years with a few of them, bonding as mentioned above and especially bonding the exhaust in a few places made huge differences.  I tried shielding all the DC lines going to the COPs and it didn't really make any difference for me. 

Bonding, bonding and more bonding is the ticket.  Then start putting ferrite cores and shielding if that doesn't work.
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N1AUP

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Re: 2018 Ford F150. How did you suppress noise?
« Reply #18 on: December 16, 2022, 09:50:43 AM »

I've not done any of the suggested fixes yet.  To be honest, the thought of drilling a zillion holes, wrapping everything in shielding, etc on a $50.000 truck, gives me the willies.

One thing I did notice is that if I am tooling down the highway at 70 MPH, and take my foot off the gas, the noise decreases to S0.  Giving the truck gas, spikes the noise to S7.  The more gas I give it, the more noise.

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N1AUP

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Re: 2018 Ford F150. How did you suppress noise?
« Reply #19 on: December 16, 2022, 10:18:30 AM »

I bet you made a ham mistake. You ran the negative from the radio all the way to the battery term post, didn't you? If you did, you got exactly what you asked for. Take the battery negative to the chassis.

No.  The negative goes to the metal firewall right near the battery.
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W1RKW

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Re: 2018 Ford F150. How did you suppress noise?
« Reply #20 on: December 16, 2022, 11:18:54 AM »

 fuel pump or injector noise or both.
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K0UA

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Re: 2018 Ford F150. How did you suppress noise?
« Reply #21 on: December 17, 2022, 03:49:31 PM »

Do the hood bonding, and the exhaust bonding FIRST.

All of your trucks are valuable, but drilling these unseen holes if done right will NOT devalue it. If fact no one will even see these. Be sure to use stainless hardware, and No-Ox-Id to prevent any chance of rust in these holes. Then if that does not eliminate it start slipping Mix 31 ferrites over any and all exposed wires/looms Special attention to the computer modules. That fuel pump wiring deserves a look too as stated above. It ain't no thing to slip a Stainless Steel clamp over a Stainless steel exhaust pipe and take a plated copper bonding strap to the nearest frame/body place and screw it down with a hex head stainless screw and star washer with the screw gooped with No-Ox-Id.  It does not take long to do and can yield real dividends.
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73  James K0UA
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