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4th gear grind ???

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Old Apr 20, 2007 | 02:55 PM
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From: JACKSONVILLE FL
Default 4th gear grind ???

I started getting a very slight grind when shifting into 4th gear today...It only does when your up shifting.I can skip 4th and then down shift into 4th and no grind it dosent pop out of gear or drive bad once its in gear.I have a sticking clutch pedal when shifting hard I have a new clutch waiting to go in when I have time to do it.Do u think the new clutch will fix my probs??? or do you think simple fluid change might help.Any ideas
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Old Apr 20, 2007 | 08:35 PM
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Originally Posted by nscrash
I started getting a very slight grind when shifting into 4th gear today...It only does when your up shifting.I can skip 4th and then down shift into 4th and no grind it dosent pop out of gear or drive bad once its in gear.I have a sticking clutch pedal when shifting hard I have a new clutch waiting to go in when I have time to do it.Do u think the new clutch will fix my probs??? or do you think simple fluid change might help.Any ideas
I had the same issue but when powershifting at highrpm. most likely my syncros are shot but after swapping to amsoil ATF, it stopped doing it.
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Old Apr 21, 2007 | 06:12 AM
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Originally Posted by Ikester
I had the same issue but when powershifting at highrpm. most likely my syncros are shot but after swapping to amsoil ATF, it stopped doing it.
maybe I need to switch over to ATF soon since my 3rd and 4th gear are both grinding downshifting and upshifting. Probably bad sychros as well, but changing the fluid to see if it eliminates the problem at least for a while is always better than replacing the tranny
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Old Apr 21, 2007 | 08:26 AM
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Fluid may be low ,mine was doing the same,changed fluid all was well after.JER
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Old Apr 21, 2007 | 04:15 PM
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I just got done changing the fluids with royal purple and now its grinding in 3rd also...Maybe i'll try amsoil.Has anybody ever used royal purple in ur cars?Anyways thanks 4 the input
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Old Apr 27, 2007 | 06:48 PM
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did you try the amsoil yet? I'm interested in hearing the results as I have a 3rd and 4th gear grind as well
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Old Aug 28, 2007 | 03:50 PM
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Did any of you guys have luck with changing the fluid? My 01 has 30K and it grinds going into 3rd at higher rpms, low rpms it shifts fine and all the other gears are good. My local dealer is telling my syncro, 3rd gear and blocking rings. 2k in parts and labor does that sound right?
I can't see how fluid would make this problem go away.
Thanks
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Old Aug 28, 2007 | 06:03 PM
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Originally Posted by rb5473
Did any of you guys have luck with changing the fluid? My 01 has 30K and it grinds going into 3rd at higher rpms, low rpms it shifts fine and all the other gears are good. My local dealer is telling my syncro, 3rd gear and blocking rings. 2k in parts and labor does that sound right?
I can't see how fluid would make this problem go away.
Thanks
Too many want a "mechanic in a can". Note: if your 3-4 shift fork is bent it might be a contributing factor too. The OEMs are aluminum. Steel replacements are available.
HTH
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Old Aug 28, 2007 | 07:41 PM
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My MN6 started grinding going into 6th. I had run Mobil 1 for about 51,000 miles. I changed to Amsoil ATD and the grinding stopped.
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Old Aug 28, 2007 | 09:30 PM
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Interesting, my 4th gear grinds as well, i took it to a transmission shop and they told me it was my syncro, 2k for a full rebuilt. Know im thinking of trying this Amsoil ATF, to see if it stops the grinding for now.
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Old Aug 29, 2007 | 12:41 AM
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Originally Posted by 01 stock c5
Interesting, my 4th gear grinds as well, i took it to a transmission shop and they told me it was my syncro, 2k for a full rebuilt. Know im thinking of trying this Amsoil ATF, to see if it stops the grinding for now.
Here's the info on the two tranny fluids that AMSOIL labels for use where Dexron III is specified:
AMSOIL ATF
AMSOIL Torque-Drive Synthetic Transmission Fluid
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