Noise upfront / Gas Pedal Vibration

[pbrstreetgang]

I replaced my Brake Power / Hydro Booster back around the first part of the year and I am now having an issue that I think is related.

Sometimes when I am driving my truck I get a secondary vibration from what seems like the driver's side of the firewall, right where the booster is. When this happens it sounds like a sump pumb running and there is a vibration in the gas pedal.

The guy down at the local auto repair place says in all his wisdom that my dash is rattling and that it is it. But I am sure that it is something else.

When the truck is idling it happens and when I put my foot on the accelerator and give it just a little gas it will stop it.

I think it is somehow tied to the power steering pump/booster since it is a secondary engine related vibration and these run off of the engine's power. When I finished my switch out I had two small rubber O Rings left and I didn't know where they went. Could this be a vacuume problem? Booster not properly seated / sealed?

 

[doghead]

Sounds like the typical, air-filter housing vibration. Try tightening it or, just open the hood while it's idling and touch the air-filter housing with your hand.

 

[pidgeon]

Check the fan clutch too. That's one of the symptoms I've noticed. I just shook it off as diesel rumble, but I'm fairly sure when I replace the fan clutch that will go away.

 

[4bogginchevys]

could it be a bad motor mount? No rubber = vibration?

 

[pbrstreetgang]

So no one thinks that it could be related to the booster? I checked the airfilter housing as I had just replaced the nuts with wingnuts so I thought maybe that could be it. Not so.

Fan Clutch sounds possible, but it is really annoying. It quits when the truck changes over the a lower idle

 

[southdave]

have you tried moving the key to the off position?

sorry I cant help myself
Btw check the tranny fuild, had ford that would vibrate when in park ,and would do the same turn out it be low on the juice
It might have cause your A/F to come lose ect..

 

[raiburn]

Southdave might be right, but just in case that dosen't work,
you should try inserting your index fingers in your ears, and see if you can still hear it. The noise should stop almost immediatly.

 

[pbrstreetgang]

Raiburn,

i can't tell if you are wasting your time or mine. If that is all you got, post elsewhere.

 

[4bogginchevys]

An old mechanics trick is to use a screwdriver as a stethiscope, might work for you

 

[raiburn]

PBR, sorry I ruined your day. I didn't know you were so sensitive.

 

[davo727]

Yeah if these trucks arent vibrating, rattling and knocking its cause there not runnning

 

[kenny]

Mine just started to vibrate alot more. I think it is the motor mounts. It started as the steel fuel tank gaurd started to vibrate and then the drive shaft started to also about a week later.I am just going to change the engine mounts because they are from 1985 and I am sure they are bad.I have checked every thing else already and they are the only thing left