Jbatman
New member
I've been stubbornly putting off this post for a while thinking that I would figure it out but alas I'm giving in to brighter minds.
Background: 2018 TRD ORP, 6k miles, recently installed the FJ TRD kit in addition with 1" front spacer and 1.5" T13 coils in the back with the OME 10mm yellow spacer on the drivers side to account for lean.
Symptoms: Everything rides great except under a small subset of conditions. When the vehicle is loaded with weight (ex. 4 people in the car) the rear driver side will make this knock type noise when going over multiple small deviations in the road. Think cobblestone or washboard type travel. It really only happens on that type of road however, not big pot holes or gradual dips, etc. It also seems more prevalent when going up an incline.
Noise: It's not tinny or high pitch but also not super deep sounding. Imagine if you wrapped a crescent wrench with one layer of a shop rag and hit the frame of the vehicle. The noise usually comes in pairs like a quick knock or something hitting back and forth. From the driver perspective it "sounds" like the noise is coming from underneath the driver side back seat on the left which matches up where the wheel well/shock/gas tank is.
I thought maybe the coils weren't seated in the upper recess properly, due to the 10mm spacer, and the coil may have been contacting the frame but I had a shop pull both coils out and reinstall them to no difference.
My next thought is something with the sway bar and or end links...maybe torque'd improperly? I'm at a loss anymore. Daily driving with just myself and/or wife in the front seat is great and I never hear the noise but once there is additional weight in the back I start to hear it. I'll try and capture an audio clip of the noise.
Thanks in advance for any input!
Background: 2018 TRD ORP, 6k miles, recently installed the FJ TRD kit in addition with 1" front spacer and 1.5" T13 coils in the back with the OME 10mm yellow spacer on the drivers side to account for lean.
Symptoms: Everything rides great except under a small subset of conditions. When the vehicle is loaded with weight (ex. 4 people in the car) the rear driver side will make this knock type noise when going over multiple small deviations in the road. Think cobblestone or washboard type travel. It really only happens on that type of road however, not big pot holes or gradual dips, etc. It also seems more prevalent when going up an incline.
Noise: It's not tinny or high pitch but also not super deep sounding. Imagine if you wrapped a crescent wrench with one layer of a shop rag and hit the frame of the vehicle. The noise usually comes in pairs like a quick knock or something hitting back and forth. From the driver perspective it "sounds" like the noise is coming from underneath the driver side back seat on the left which matches up where the wheel well/shock/gas tank is.
I thought maybe the coils weren't seated in the upper recess properly, due to the 10mm spacer, and the coil may have been contacting the frame but I had a shop pull both coils out and reinstall them to no difference.
My next thought is something with the sway bar and or end links...maybe torque'd improperly? I'm at a loss anymore. Daily driving with just myself and/or wife in the front seat is great and I never hear the noise but once there is additional weight in the back I start to hear it. I'll try and capture an audio clip of the noise.
Thanks in advance for any input!
associated with it. I am pretty sure they are shifting a minute amount under normal driving then re-seat when I transition through a rut/gutter/curb. For whatever reason I think mine has to do with the diameter of the spring steel not being the same as the stock, either bigger or smaller or the final twists not being exact, who knows. I didn't check when I had them both out. I didn't have any clink/clunk issues prior to aftermarket springs.
