knocking/rattle from rear.

Bludge · Post by **Bludge** » Sun Jan 05, 2014 7:07 pm

i have a knocking/rattling sound coming from the rear of my 4th gen. not too bad on speed bumps if i hit them straight on, but potholes or uneven roads it makes a hell of a noise. i had a knocking on the drivers side before doing the 2ws swap, now its on both sides.

i have just changed the drop links, and i will get the car in the air when its dry and double check i have torqued everything up, and looking at the manual i dont think i have missed putting in bushes anywhere. i will also be trying the shock knock cure when i can.
i will also be changing the bumper back to stock as its an awful fit and im wondering if it might be contributing.
*edit* was thinkingni will replace the arb bushes too.

can anyone suggest any other possible causes?

Post by **RattyMcClelland** » Sun Jan 05, 2014 7:11 pm

Shock knock. Very common. It's in the wikki guide.

Bludge · Post by **Bludge** » Sun Jan 05, 2014 7:15 pm

yeah gonna do that when its dry. but just seemed strange it was only one side before the 2ws swap, then both sides and a lot louder after.

just want to explore every avenue when i go to tackle it as its driving me mad!

mercutio · Post by **mercutio** » Sun Jan 05, 2014 7:16 pm

make sure the subframe bolts are tight

Bludge · Post by **Bludge** » Sun Jan 05, 2014 7:52 pm

i will check them again but i checked them 2 or 3 times after i changed it! paranoid everything was gonna fall off

there arent any bushes where the subframe connects to the shell is there?

mercutio · Post by **mercutio** » Sun Jan 05, 2014 7:54 pm

no but there really should be

Bludge · Post by **Bludge** » Sun Jan 05, 2014 8:40 pm

ok good, i was sure there wasnt as none of the cars i have been under have, but thought it best to check!

Bludge · Post by **Bludge** » Sun Jan 05, 2014 8:50 pm

i googled halfords body repair washers as it states in the shock knock guide. they are metal shims, is that right? for dome reason i had it in my mind that they were like rubber washers.

Post by **Merlin** » Sun Jan 05, 2014 9:46 pm

Yeah just a couple of metal washers. If not shock knock could it be anti roll bar drop links?

Bludge · Post by **Bludge** » Sun Jan 05, 2014 10:16 pm

only replaced them a couple of weeks and about 5 miles ago, so im thinking i can rule them out. what about ball joints, can they cause knocking?