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  #1  
Old 05-28-2011, 03:05 PM
wintermute wintermute is offline
'03 Edge 4x4
 
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Default Cruise Control "buzz"?

I've noticed that at lower speeds, say 50 mph with the cruise control engaged, an audible buzz is heard when the PCM decides more throttle is needed. This is only heard when under load, like climbing an incline.

Also, the truck has had the Cruise Control Switch TSB fix applied.

Any thoughts?
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  #2  
Old 06-06-2011, 05:54 PM
wintermute wintermute is offline
'03 Edge 4x4
 
Join Date: Sep 2010
Posts: 242
Default Re: Cruise Control "buzz"?

Hmm, I seem to have "stumped the producer" here…

Additionally, I've noticed that this buzz is present at higher speeds as well, it's just drowned out by the wind noise. It only does this with cruise. Manual throttle control makes no unusual noise like this, which makes me think it's an electrical issue as opposed to just a speed-sensitive or load-sensitive vibration.
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Old 06-06-2011, 06:04 PM
FireRanger FireRanger is offline
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Default Re: Cruise Control "buzz"?

Its not the cruise control. Its the accelerator pedal linkage (on the pedal itself). The hinge and cable and stuff. Since there is no tension on it due to the cruise control moving the throttle body, the looser pieces of it vibrate at certain RPMs and engine loads.

Some creative application of silicone will fix that.
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  #4  
Old 06-16-2011, 10:24 PM
wintermute wintermute is offline
'03 Edge 4x4
 
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Posts: 242
Default Re: Cruise Control "buzz"?

Good to know! Thanks, I'll check it out.
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