baretta

my only concern with adding rubber spacers is that this assembly will loosen over time as the rubber hardens/cracks/degrades. doesn't seem like there is another fix other than isolating the pedal assembly....i might have to give this a try.

did you lock tight the bolts going thru the floor?

_MacLeod_

No lock tight. The bolts are going through 3 layers of Dynamat so that stuff will act like Loctite. These are 1/2" thick rubber washers and they'll be inside so I don't think they'll degrade to the point where it would be a problem. Plus, the assembly is not really load bearing. I think it should be ok for a long time....hopefully.

They did have solid spacers. Steel, aluminum and hard vinyl. Those would probably stand up better to time but I thought the rubber ones would be more likely to absorb any vibrations coming through the firewall.

I can't really get up under the dash enough to get a pic of the back of the assembly. There are 3 wires plugging into the assembly and I can't get under there enough to figure out how they release and I don't want to risk breaking anything.

All you do is push the bolts through the assembly then slide the washers on then thread them into their respective holes (that's what she said).

blake6551

Ok so just to make sure I have it right, the three larger washers went between your dynamat and back of the assembly and the three smaller between the bolt head and front of the assembly?

_MacLeod_

No. Sorry, I suck at explaining things. Both the large and smaller washer go between the assembly and the firewall. I pushed the bolt thru the assembly the slide the small washer up the boltall the way to the assembly then the larger one and then mount the assembly to the firewall. The large washer is what's up against the firewall and the smaller washer is between the large washer and the assembly.

The only reason I got the smaller washer was just to add a little more buffer for vibration. You don't really need them because the 1/2" washer is enough to keep the assembly from touching the firewall.

blake6551

Ok mine is fixed. I went to Ace this am, couldn't find the exact washers but installed 5/16x1¼" soft rubber washers. So from the firewall, I have 3 layers of dynamat, 4 of these rubber washers, the assembly, and one washer on top. I bought three new M8 2.25" hex flange bolts that go through all that.

Pic before I added the 4th washer below the assembly...pedal assembly goes in the gap shown on the bolt. MacLeod you're the man!

_MacLeod_

Awesome!! Glad to hear it!

After spending the weekend with mine, I can say it is indeed fixed. I'm glad we got this figured out. I knew there had to be a way to isolate the pedal from the firewall. I do think I'm gonna switch mine around like yours and put the small washer on the front side of the assembly. Mine is almost spaced too much with both washers so if I take the 1/4" washer out and put it around front, that should have my pedal at just the right distance.

KYBuckeye

Thanks for the tips guys. I'm assuming the dynamat is the last thing that touches the firewall? All rubber washers go between the dynamat and the assembly, correct?

Edit: with the exception of the last washer that goes between the top of the assembly and the bolt head.

_MacLeod_

I've got 1 layer of Dynamat on the back of the assembly and 1 layer of Dynamat on the mat where the assembly mounts up against.

The washers, I've got a 1/2" rubber washer between the assembly and the firewall acting as a spacer and the 1/4" rubber washer like blake6551 had it, on the front of the assembly between the head of the bolt and where it mounts. This means the assembly is suspended by rubber basically with nothing solid touching the firewall except where the bolts run through the assembly.

Now I also had to move my adjustable pedal all the way back too because I haven't replaced the loose pine that Ford put there with a bolt to keep it tight. Moving it all the way back tightens up the pedal and did away with the last little bit of vibes I was getting.

As for the rubber washers, at least in my Ace Hardware, they're not on the same aisle as the bolts and stuff. They're on a separate aisle so you may have to look a little for them.

blake6551

So i have the three layers of dynamat stuck to eachother and cut into a "boot" shape that follows the contour of the three bolts. The dynamat is closest to the firewall (left the paper backing on so as not to make a mess), then the 4 rubber washers and then the assembly.

Edited to add: I'm also marking the bolts with an Testors enamel pen so as to notice if the bolts back out. I highly doubt it as some of that dynamat crap gets on the bolt as it threads in and it's pretty snug.

kbass24emtp

Well I went a bought the Dynamat license plate kit and used all the mat to wrap the entire gas pedal shaft and placed it on the under side of the foot pedal. 99% of all the vibrations are gone. I only have a very slight vibration feeling when accelerating on a cold engine. While cruising it is 100% gone. I'm happy.