rear suspension making knocking noises - Toyota Yaris Forums

MUSKOKA800 · 08-09-2011, 08:08 PM

Try a search.
I recall some had rear axle contact with or near the gas tank. Perhaps due to a bad mix of aftermarket parts but I don't really recall the details.

Lil Abner · 08-10-2011, 11:04 AM

Quote:

Originally Posted by MUSKOKA800

Try a search.
I recall some had rear axle contact with or near the gas tank. Perhaps due to a bad mix of aftermarket parts but I don't really recall the details.

The hitting of the gas tank was only happening to those of us who changed the bolt location of the rear end. If you don't change the position, then the gas tank is fine.

However, you could be hitting your brake line brackets. If you look under your car, mounted on top of the rear beams, you'll see a bracket that holds the brake line. See if you can find marks on that, or marks on your frame (car side) from the bracket. You can also try putting a piece of masking tape on the frame rail above the bracket, which would show marks from impact.

3cyltrbo · 08-10-2011, 12:59 PM

personally I have the exact same crappy solid rear axle sound on my Yaris that I did on the Echo.

The Echo had shocks/springs and they were installed by a master technician friend of mine.

The Yaris has coilovers which I installed, and although I am not a professional mechanic, I consider myself "advanced shade tree mechanic" and I can tell you that because its my own car, I made sure that everything was tight / nothing coming into contact etc....

as for brake line brackets etc..., for me personally its much more of a deeper thud than what a small bracket could ever produce

as for searching

I searched many different word combinations, in both thread titles and thread bodies.

W

ROCKLANDTOYOTA · 08-11-2011, 12:56 PM

Quote:

Originally Posted by MUSKOKA800

Try a search.
I recall some had rear axle contact with or near the gas tank. Perhaps due to a bad mix of aftermarket parts but I don't really recall the details.

WITH passengers my MEGAN racing gas tank brace makes contact with axle beam.....

3cyltrbo · 08-16-2011, 11:16 AM

thanks everyone for all the info

I took the rear end apart the other day and I finally resolved it was the little bracket that holds the brake line just after it leaves the back plate at the hub.

The brake line rests in that bracket, but frankly its kinda redundant, especially with a solid rear axle like ours - the brake line should always be more or less parallel to the axle (it has a fixed connection at both ends, so it shouldn't be moving very much in between those two points)

I removed the brackets, and voila = peace and quiet

W

08-09-2011, 08:08 PM	#1
MUSKOKA800 Drives: Scion FRS RS2, ‘21 Crosstrek Join Date: Oct 2008 Location: Chatham, Ontario, Canada Posts: 1,729	Try a search. I recall some had rear axle contact with or near the gas tank. Perhaps due to a bad mix of aftermarket parts but I don't really recall the details. __________________ TRD Upgrades: 18" Wheels wrapped in 215/35/18 PZero's, Sportivo Shocks/Struts, Lowering Springs, Swaybar, Axle-Back Exhaust, Oil Cap, Rad Cap, Signage. Aftermarket Goodies: Piggies SS, K&N Drop-In, Blitz S/C, DC Header, NST Pulley) Toyota Options/Accessories: Sport Pedal Covers, Sport Shift Knob, Ipod Interface, Summer Mats, Winter Mats, Cruise Control, Auto-Dim Mirror, Echo steelies with winter boots.

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08-10-2011, 12:59 PM	#3
3cyltrbo Drives: MR2 Spyd/Type R/Yaris/Civic Si Join Date: Feb 2007 Location: Ottawa Posts: 479	personally I have the exact same crappy solid rear axle sound on my Yaris that I did on the Echo. The Echo had shocks/springs and they were installed by a master technician friend of mine. The Yaris has coilovers which I installed, and although I am not a professional mechanic, I consider myself "advanced shade tree mechanic" and I can tell you that because its my own car, I made sure that everything was tight / nothing coming into contact etc.... as for brake line brackets etc..., for me personally its much more of a deeper thud than what a small bracket could ever produce as for searching I searched many different word combinations, in both thread titles and thread bodies. W

08-16-2011, 11:16 AM	#5
3cyltrbo Drives: MR2 Spyd/Type R/Yaris/Civic Si Join Date: Feb 2007 Location: Ottawa Posts: 479	thanks everyone for all the info I took the rear end apart the other day and I finally resolved it was the little bracket that holds the brake line just after it leaves the back plate at the hub. The brake line rests in that bracket, but frankly its kinda redundant, especially with a solid rear axle like ours - the brake line should always be more or less parallel to the axle (it has a fixed connection at both ends, so it shouldn't be moving very much in between those two points) I removed the brackets, and voila = peace and quiet W