Shifting into 3rd gear from high RPM = GRIND
I have an '04 with 64.5K miles, 6MT.
I changed my tranny and diff fluid at 60K. I'm currently using Redline's MT-90 and 75w90. Recently, i've suffered from grinds when shifting 8K RPM and up. It's a hit or miss between 7-7.5K RPM. No grinds during daily commuting. Here's the kicker, at about the same time i've began to have grinds, my car threw a pending code for a bad cat (P0420). However as of late, the code vanished and has not popped up. No power loss whatsoever, as far as I can tell anyhow. Should I go back to OEM fluid? Do I have a bad synchro or pilot bearing? |
i have a somewhat similar issue.
If I try to down shift from 3rd to 2nd it almost all ways grinds. |
same exact thing, i was going to have my trans fluid drained and filled. PM me if you find a solution!!!!!!
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bump
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Could be your clutch is not able to handle the high rpms any more. That is where I would start.
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Perhaps. Do you think these two are related? https://www.rx8club.com/series-i-tro...6/#post4612400
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Replace your clutch.
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Okay, i'll do that and report back here. I'd like to add that I don't grind if i double clutch. I'm just hoping I don't need a rebuilt tranny.
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Don't replace the clutch yet! Check clutch play first and also inspect the clutch pedal bracket for signs of breaking.
Here under clutch adjustment: http://foxed.ca/rx7manual/2003mazdar..._S01_0498.html And here to check for breaking: https://www.rx8club.com/series-i-do-...al-fix-170387/ Throwing a new clutch at the problem without properly diagnosing it is a waste of money. |
Great info, Harlan. I believe the assembly is fine, it doesn't move left or right, go at an angle or make a squeak.
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You may not be able to tell without looking at it, everything else is a symptom not the problem. Just take a flashlight and wedge yourself into the footwell until you can see it.
Also don't miss the first link on clutch pedal play, it might solve your problem. |
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Thank you for the clarification. I'll do so and let ya'll know how it goes!
*edit* I think the synchro in 3rd gear is worn. When I double clutch into 3rd at 8.5 grand it doesn't grind. Displayed is RIWWP's symptoms and causes for my particular problem. I guess i'm going to live with it until I can get my tranny rebuilt or get my hands on a Series II transmission. Attachment 287828 |
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