Rx7TyreBurna

iTrader: (1)

Last night i started hearing a strange clicking sound when I was in gear and driving. If I push the clutch in, the sound stops. When I use the engine for compression braking, there is a slight whine coming from what sounds like the transmission. I just figured it's either the clutch or transmission going. But there is a for sure clicking sound.... Maybe like a spring on the clutch plate having problems. It sounds like metal bending, and making popping sounds.

Can you guys think of any tests to try? I will check it out in neutral and see what happens, at least that will tell me if I need to have load on the car to make stuff happen. Clutch didn't seem to be slipping at all.

funkjaw

iTrader: (3)

Probably the transmission. Either way, you have to remove the tranny anyways to inspect the clutch.

Rx7TyreBurna

iTrader: (1)

Bleh, I hope not... LoL. But, I don't think the clutch would be too gone, it's relatively new... kinda. haha.

RotaryRocket88

iTrader: (7)

A noise from the transmission fits. It might also be the rear end, since it seems to only happen when in motion.

Rx-7Doctor

iTrader: (13)

http://www.mazdatrix.com/g2.htm

Most common causes listed above. Of course always could other things.

Rx7TyreBurna

iTrader: (1)

Hmmm. well, it sounds like metallic popping. In reverse it sounds like a metal whine. Metallic popping while going forward.... If I am cruising down a hill in neutral, there is no noise. I can rev and nothing. But as soon as it goes into gear, there is the distinct metallic popping.

And accelerating, the popping sound happens, let go of the gas pedal and let the engine slow the car, and it sounds like metal spinning on metal. Would low transmission fluid cause something like this? I haven't checked that in a long time.

Rx-7Doctor

iTrader: (13)

Check the metal heat shielding under the car. Maybe piece is hitting the drive shaft?


You can also put the rear of the vehicle up on jack stands and start the engine then put it in gear and get under the car and listen for the noise.

If you do the above make sure you block the front wheels and that the vehicle is secure and I do mean securely seated on the jack stands. You can even put the floor jack under the rear end for further stability.

bostonspgs

iTrader: (1)

or jackstand whole vehicle , that way she cant move at all

Rx7TyreBurna

iTrader: (1)

Hmmm, well, it makes two different sounds.... the squeeking, whirly sound when using engine compression to slow the car, and the rattle when accelerating... I will probably put the car on stands tomorrow.

Is it possible I could have broken a spring on the clutch disc?

funkjaw

iTrader: (3)

I think if you broke a spring on the clutch it would slip at times. Key words: I think haha. To me it sounds like the transmission. If it were the heat shield or differential it would make the noise any time the driveshaft is spinning, which is not the case here according to your posts. Anyways, just get the car on jacks (or lift) and start inspecting.

g14novak

iTrader: (1)

I'm going to say rear end.

Do what doctor said, put it up on stands, put it in gear and get underneath to see where the sounds coming from.

Pray its not the clutch. The tansmission and rear end are cheaper to replace on these.

1SWEET7

iTrader: (1)

I had some horrible sounds on my old N/A when my U-Joints went out on the driveshaft, I would check those too while under the car.

Rx7TyreBurna

iTrader: (1)

So, I put the car up on jacks and got undernearth the car while my bro was pressing the gas pedal a bit. At first, there was slight noises. Then, they stopped. When I put the car down, the clicking noise isn't there anymore when accelerating. But when decelerating, there is a whine. Sounds like if the clutch was glazed and having trouble gripping. But, it feels like it's gripping fine. The sound changes based on how much i press the clutch in. As the clutch is engaging, I can hear the sound start. The more I let the clutch out, the louder it gets.

I'm kinda glad the clicking is gone... but, now I am curious as to what it was.

Rx7TyreBurna

iTrader: (1)

Alright, took the car to my work and we put in up on a lift. I stayed in the car and went into each gear accelerating. There was no clicking or whining sound.

Driving it around, if I stay at only partial throttle, there is no clicking, no matter how fast I am going. But, more load and the click / rattling starts.

Some of my tranny mounts look real bad, so I am wondering if it's shifting and causing the driveshaft or something to rub. The mount that sits right below the transmission looks pretty jacked. When the car is on jacks, it looks like that mount is poking down. Should it be pushing the transmission up when the car is like that?

Rx7TyreBurna

iTrader: (1)

Well, my previous thread hella got jacked. Petty stuff.

So, my car makes a metallic popping sound. Almost like a heatshield vibrating, but it sounds like it's right underneath the center console. When I let the car decel using engine compression, there is a whine. Sounds like the clutch slipping, but it doesn't feel like it at all. I've done hard pulls and it feels fine. Just gets really loud with all the clattering.

http://www.mazdatrix.com/g2.htm

The second to bottom seems like mine. Though, with very very light throttle, there is no rattle. As I push the car harder, the rattle will begin, then get louder. If I let off the throttle a bit, the rattle will go away, but I can keep accelerating.

I put the car up on a lift. I sat in the car and ran the car through 1,2,3 gears and there was no rattle or whine. Also ran in first pulling up the ebrake to try and put some load on the rear... then still didn't give any noise. Seemed like no matter what I did with the car up, I couldn't get the rattle to appear. It sounds like exhaust rattling against something, but I've triple checked the exhaust and can't see anywhere that it would rattle.

Is it possible it's my ring and pinion? Is there a way to test? Could it be my clutch type LSD? It started after I did a few hard launches....

RotaryRocket88

iTrader: (7)

I deleted all the thread jacking and merged your two threads.

When my original rear-end went out in my car, it just started making horrible metal-on-metal sounds whenever in motion. But it had broken some teeth off, which doesn't exactly sound like your situation. I think a bearing issue fits a little better.

Civerus

iTrader: (2)

Metal on Metal and clicking....... throwout bearing. Thats my 2c. Could be not functioning properly, not greased enough to allow proper turning, binding on itself, a number of things.

Rx7TyreBurna

iTrader: (1)

Thanks RotaryRocket for cleaning it up.

Hmm, I originally figured it wasn't the throw out because when I push the clutch in the sound stops. It only appears to happen when I am driving, and only under certain throttle positions.

durtled

thats what i was gonna say haven't seen it yet. same thing happens with one of the tow trucks at work rattle when the clutch is just chillin and stops when u push it in

JustJeff

iTrader: (13)

Forgive me for not reading the whole thread, but if someone else hasn't mentioned it. I once thought I had a clutch problem cause of some related noise.

Turns out it was a bad transmission mount that was forcing the u-joint on the driveshaft in a bad position.

Rx7TyreBurna

iTrader: (1)

JustJeff, that's what I was thinking too because it doesn't make any noise when the car is on jacks. When the car is on jacks it causes the transmission to sit a little different.

durtled

to keep a thread going my clutch is def goin i think. its engaging later then it should. meh in about a week ill park it for a few months

Rx7TyreBurna

iTrader: (1)

So it finally rained here, and I noticed that driving around, as soon as I start trying to move, even with just slight throttle, my rear wants to break loose. Could this be a sign of something wrong with the LSD? I mean, like 1000 to 2000 RPM, very little throttle, and it's fish tailing. It's very difficult to drive. Also, if I down shift and let the engine slow the car, the back locks up and starts to slide.

Just wondering if those help diagnose the problem at all. I am not looking forward to dropping the tranny out. If I can determine whether it's a tranny or rear problem, I'd love to before I do un-needed work.

I noticed during autocross that when I got on the gas, the rear always wanted to come out too, even when it was dry.

Thanks guys for the help.

Rx7TyreBurna

iTrader: (1)

So, car is on jacks, drained the oil from the transmission, no metal in there, and none on the magnetic plug.

One thing I did notice though, when I grab the drive shaft, it can make a slight clunk sound, but it sounds like it's coming from where the driveshaft goes into the transmission. I think there was a slight in and out movement....

Rx7TyreBurna

iTrader: (1)

Alright, so the problem was.....

The transmission mounts were causing the transmission to sit low. After jacking the transmission up and tightening the transmission mounts, the transmission sat back up like it should.

The crossmember needs to be replaced because the center bushing is very bad.

This was causing the metallic clicking sound. The driveshaft was rubbing against the heat shield when the engine would shift a little.

There is still a whine, and I will try and figure that out in a while.