Electrical interference from engine on AM radio
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Freshman User
Joined: Aug 2003
Posts: 28
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From: South Georgaia
Electrical interference from engine on AM radio
I'm looking at a new 2003 F-150 Lariat FX4 SCab.
I sometimes listen to Limbaugh on AM 690 out of Jax, FL. I'm in south Georgia. While test driving this truck I noticed a whine on the AM radio that increases in frequency as the engine rpm's increase.
My Expy doesn't do this and another similar F-150 doesn't do it.
Anyone had similar problems?
How was it fixed?
Thanks!
I sometimes listen to Limbaugh on AM 690 out of Jax, FL. I'm in south Georgia. While test driving this truck I noticed a whine on the AM radio that increases in frequency as the engine rpm's increase.
My Expy doesn't do this and another similar F-150 doesn't do it.
Anyone had similar problems?
How was it fixed?
Thanks!
Moderator
Joined: Dec 2001
Posts: 22,436
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From: Louisville,Ky.
Electrical interference from engine on AM radio
There are 2 noise suppressors on the front of the 5.4L and probably the 4.6 too. They are on the front of the heads near the intake. They look like sideways U's. [ ]
One or both could either be bad or unhooked. Also, the radio could have a bad chassis ground.
Jimmy
One or both could either be bad or unhooked. Also, the radio could have a bad chassis ground.
Jimmy
Senior User
Joined: Dec 2002
Posts: 270
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From: Houston TX USA
Electrical interference from engine on AM radio
on my old SUV ( a 93 explorer) i noticed that too. everytime a Texas A&M game came on i would go to the store and it would fade in and out. maybe because i added my radio myself but now on my new f150 it does it too. i have tried everything but still can't figure it out. if you find out let me know. i hate missing my team play.
Junior User
Joined: Oct 2002
Posts: 61
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From: NY
Electrical interference from engine on AM radio
What you need to do is to get a antenna filter.
I used a [ ES014 am/fm antenna noise filter made by Scosche ]
I had to order mine at Radio Shack. You can also get them at Valco Electronics on line. They are easy to install,they just plug in between your antenna line and your radio. I was amazed at how well they work. There are other brands also but I can't speak for them.
I used a [ ES014 am/fm antenna noise filter made by Scosche ]
I had to order mine at Radio Shack. You can also get them at Valco Electronics on line. They are easy to install,they just plug in between your antenna line and your radio. I was amazed at how well they work. There are other brands also but I can't speak for them.
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