Miata shifter and car shake
#1
Miata shifter and car shake
I took a video of what exactly is going on here.
So it all started with a metal clank as I let out my clutch. Only when under load, and only in reverse or first. I thought it was a suspension issue cause it happened on hills, (as I live on one) but as I checked the suspension bolts, bushings, and struts I couldn't find anything. Then my shifter started going crazy through first and second gear, but in third it doesn't go from side to side, just up and down quick and makes a shaking noise. At 30-35 no matter what gear I am in the whole car shakes really bad. I've done some research about the PPF and I can only see 4 bolts, 2 on the tranny, and 2 on the diff, and they are all tight and there. One was loose but didn't fix my problem. I tried shaking my engine for motor mounts, but it doesn't move as I also visually inspected them. Also all of the symptoms are gone when I am sitting there and I rev the car, so it has something to do with when load is applied to the drivetrain. Any ideas?
So it all started with a metal clank as I let out my clutch. Only when under load, and only in reverse or first. I thought it was a suspension issue cause it happened on hills, (as I live on one) but as I checked the suspension bolts, bushings, and struts I couldn't find anything. Then my shifter started going crazy through first and second gear, but in third it doesn't go from side to side, just up and down quick and makes a shaking noise. At 30-35 no matter what gear I am in the whole car shakes really bad. I've done some research about the PPF and I can only see 4 bolts, 2 on the tranny, and 2 on the diff, and they are all tight and there. One was loose but didn't fix my problem. I tried shaking my engine for motor mounts, but it doesn't move as I also visually inspected them. Also all of the symptoms are gone when I am sitting there and I rev the car, so it has something to do with when load is applied to the drivetrain. Any ideas?
#10
Took a few pictures to document the motor mount replacement. I got the Mazda competition mounts from MossMiata. The previous owner for some reason has the mounts notched out and the metal plate that goes over the mount is gone with Megan racing mounts on it. . Nevertheless it almost completely fixed my problem. Still a little bit of shake in first and the 30mph shake is still there but drastically reduced. I think it's a U-joint on its way out.
Some pointers are, remove the MAF for the driver side mount and take it out from the top when the bolts are out. Otherwise it hits the header and steering shaft, for the passenger side after you loosen them it comes out from the front of the car easily. Other than that it is very straightforward and shouldn't take more than an hour and a half.
The increase in vibration from the stiffer mounts honestly isn't terrible. Makes your rattles more pronounced haha, but not unbearable by any means.
#11
Took a few pictures to document the motor mount replacement. I got the Mazda competition mounts from MossMiata. The previous owner for some reason has the mounts notched out and the metal plate that goes over the mount is gone with Megan racing mounts on it. . Nevertheless it almost completely fixed my problem. Still a little bit of shake in first and the 30mph shake is still there but drastically reduced. I think it's a U-joint on its way out.
Some pointers are, remove the MAF for the driver side mount and take it out from the top when the bolts are out. Otherwise it hits the header and steering shaft, for the passenger side after you loosen them it comes out from the front of the car easily. Other than that it is very straightforward and shouldn't take more than an hour and a half.
The increase in vibration from the stiffer mounts honestly isn't terrible. Makes your rattles more pronounced haha, but not unbearable by any means.
#13
I guess the previous owner figured it was easier to cut a hole in a place that would guarantee more vibration then just stick an extension in to loosen the nut. Pretty fucked up. Personally, I'd have changed that back to stock for what it'd cost. Then maybe you'd have no vibration.
DN, I ordered the DIYPNP at that time.