Interesting Noise, is this normal?

[Lucy06]

This weekend I finally broke her in. My buddies and I went camping up in the national forrest and got my truck off the pavement (hit a rut and screwed up the alignment in the first 20 minutes LOL just my luck). Any way, on the way back I was pushing down the road at a constant 80 - 85 with no load and the AC on. When I got to the grapevine and started working it up the hills and getting on and off the throttle, a noise that sounded like a motor or fan or something along with a slight vibration began cycling on and off. I could feel the vibration under my left foot at the driver's side and the noise sounded like it was coming from the same place.

I think there is a pump or something at this loction but I am not positive. I guess my question is would this be normal for whatever it is to cycle on and off like that or is it likely that something is about to fail.

[2 stroker]

Originally Posted by Lucy06

This weekend I finally broke her in. My buddies and I went camping up in the national forrest and got my truck off the pavement (hit a rut and screwed up the alignment in the first 20 minutes LOL just my luck). Any way, on the way back I was pushing down the road at a constant 80 - 85 with no load and the AC on. When I got to the grapevine and started working it up the hills and getting on and off the throttle, a noise that sounded like a motor or fan or something along with a slight vibration began cycling on and off. I could feel the vibration under my left foot at the driver's side and the noise sounded like it was coming from the same place.

I think there is a pump or something at this loction but I am not positive. I guess my question is would this be normal for whatever it is to cycle on and off like that or is it likely that something is about to fail.

I bet it is the fan coming on trying to keep the motor cool going 80-90 up hill with the AC on.
2 stroker

[Lucy06]

Originally Posted by 2 stroker

I bet it is the fan coming on trying to keep the motor cool going 80-90 up hill with the AC on.
2 stroker

Yeah that's a possibility but it really seamed like it was a higher pitched buzzing or something and I could feel it at my feet in the driver's side floor board. I suppose this could still be the fan cause it stopped doing it on the downhill side after all the big climbs. I appreciate the input.

[MoyockPowerstroke]

Pull your HFCM filter...sounds like there may be some issue with that. You may have damaged or crimped a fuel line....?

[Lucy06]

Originally Posted by MoyockPowerstroke

Pull your HFCM filter...sounds like there may be some issue with that. You may have damaged or crimped a fuel line....?

I'm not sure where this is located. And once it is pulled what am I looking for to tell if something is wrong?

[MoyockPowerstroke]

Its in the exact location you describe...well very close...its on the driver side frame rail....you will want to change this filter every 10K miles...also you may want to add a upgraded drain plug...in case you get a WIF light while on the road and don't have access to tools. Pull the filter and see if there is any noticable debris or water...not sure why it would be acting up, but sounds as this is a likely suspect based on your description of the noise location. If there is considerable debris...then change the filters ....sounds like that may be the case...since you wern't aware of its location.

[amdriven2liv]

The HFCM looks like this under your truck, under driver door.

http://www.backglass.org/duncan/ps60...l/ps60_029.jpg

[MoyockPowerstroke]

Originally Posted by amdriven2liv

The HFCM looks like this under your truck, under driver door.

http://www.backglass.org/duncan/ps60...l/ps60_029.jpg

Thanks amdriven2liv...got my back on that one... Here's the drain plug upgrade recommended. Diesel Technician Society

[WydOpen]

Hmm, I think this is what I'm experiencing!

My problem thread...

Buzzing/humming/vibration feedback through gas pedal...

[Lucy06]

Originally Posted by WydOpen

Hmm, I think this is what I'm experiencing!

My problem thread...

Buzzing/humming/vibration feedback through gas pedal...

Whoo that's an interesting one, but I read your whole thread and it doesn't seem like me. It doesn't do it at idle the only time I have ever experienced it was at high speed up and down hills and there was vibration and noise. Hasn't done it again since I got out of the hills. But I thank you for your comments.