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Old 05-10-2014, 08:33 PM   #1
dysteri
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Syncro issues??

Hi everyone have a question for anyone with some insight.... Recently my 2001 zx3 5 speed has been making a noise which i assume is the tranny. After i drive awhile and the motor warms up shifting from 2-3 4 and down it makes a grinding noise like if i grinded a gear while shifting but while driving. It has done it in reverse.. Any ideas, links , youtube vids or even a sticky on the forum with more info?? Thanks in advance!


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Old 05-11-2014, 12:27 AM   #2
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Just saw a report in a different thread where the OP thought a trans. output bearing was going from the noise, turned out to be the pass. side driveshaft carrier bearing.

Having seen your thread, thought it was something that might be worth checking for your noise. Cheap & easy compared to internal trans. issues.

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Old 05-11-2014, 12:47 AM   #3
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Moved to the Technical Chat area


How many miles are on the car? Sounds like your clutch is worn to me or you having air in the clutch line which you could bleed to get out, but if there is air then maybe the master cylinder on the clutch pedal is going out and not releasing the clutch all the way. A passenger side carrier bearing wouldn't make a crunching noise when shifting gears. It would make a constant hum or noise that will get louder with speed. Crunching gears is a clutch or clutch related part that is most likely the cause.
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Old 05-11-2014, 01:23 AM   #4
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Perhaps some elaboration on the symptoms would help.

I was guessing that he's hearing a grinding noise occasionally when in gear that sounds similar to grinding a gear when shifting.

Typed descriptions can be hard to listen to when trying to "hear" the noise for diagnosis - or even guess when it's occurring....
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Old 05-12-2014, 04:27 AM   #5
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Could be worn clutch. Clutch not releasing 100% clean will grind synchros and the noise.
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Old 05-14-2014, 10:04 PM   #6
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Sorry busy alot plus mothers day lots of cookin went down anyway im assuming it is tranny issue, the master cylinder is full so i know its not leaking so maybe air like you said. It happens in 2nd and 3rd gears. Plus i can feel some viberations in the clutch pedal when it happens its not constant. It has 164k miles with a fresh timing belt and the guy i bought it from said the heads were milled. But since i got it when i go to change gears if i dont let off of the accelerator for atleast 5 secs before depressing the clutch it revs up almost 2 grand from wherever im at atm. I dont try to be mr street racer either so do i rarly get up passed 3000 rpm
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Old 05-15-2014, 10:05 AM   #7
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How many miles are on the car?

Have you drained and refilled the tranny fluid?

I agree with sleepyboy and AMC though, it's a very suspect area with the clutch/slave.

I only grind when shifting hard 2nd-3rd when I am going all out.

But, what do I expect from a car that has a little over 200k on it?
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Old 05-15-2014, 01:57 PM   #8
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Quote:
Originally Posted by freemind View Post
I only grind when shifting hard 2nd-3rd when I am going all out.

But, what do I expect from a car that has a little over 200k on it?
I think most, if not all MTX75's will do this no matter what mileage is on them. At 66.5k, mine does it as well when I'm going pedal to the metal.
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Old 05-15-2014, 07:52 PM   #9
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Quote:
Originally Posted by Miztaken1312 View Post
I think most, if not all MTX75's will do this no matter what mileage is on them. At 66.5k, mine does it as well when I'm going pedal to the metal.
Can confirm '09 120k 2-3. Swapped fluid at 90k. No big difference.
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Old 05-17-2014, 09:54 AM   #10
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My ford mechanic told me to turn the ignition on and push the clutch in and shift thru everything except reverse for about 20 mins havent heard it since... He said i could have bent a brass plate or something of the sort?? Idk hope i dont hear it til winter comes cause thats when i make all my money
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