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04 6MT Grinding Issue

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Old 07-30-2011, 09:58 PM
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04 6MT Grinding Issue

I think we've pretty much all found that these transmissions are a bit fragile, but, something I've noticed, even after switching fluids in mine, is the transmission only grinds when it gets hot.

2nd, 4th, and 6th are the problem gears.

If I let the engine warm up to 185* or so in the driveway, and at that point the transmission is still cold, I can beat the hell out of it, including fast shifts into 2nd and 4th, and it won't grind...until I've driven for about 15 minutes.

So, the biggest question is...am I right to think mixing 50/50 of Redline MT-90 and Shockproof fluids would help this?

Thanks in advance.
Nick
Old 08-01-2011, 01:16 AM
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Old 08-01-2011, 02:14 AM
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Nothing really helps when they start grinding like this. Start saving for an s2 transmission.
Another thing might be trying to understand why yours went bad, sometimes the culprit is not the transmission itself but the clutch pedal.
Old 08-01-2011, 03:53 AM
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Originally Posted by bse50
Start saving for an s2 transmission.
Is a S2 trans essentially a bolt-in swap? What are the key advantages to an S2?

Perhaps I'll search, before someone yells at me!
Old 08-01-2011, 09:52 PM
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Originally Posted by bse50
Nothing really helps when they start grinding like this. Start saving for an s2 transmission.
Another thing might be trying to understand why yours went bad, sometimes the culprit is not the transmission itself but the clutch pedal.
Well, the clutch pedal bracket had been replaced in 2009 according to dealer records, so I hope that's not the case, it's not squeaking, or anything like that. I know the new fluid wouldn't solve it, but make it more liveable until I can come up with 900 dollars for a transmission, lol.

Originally Posted by Wingznut
Is a S2 trans essentially a bolt-in swap? What are the key advantages to an S2?

Perhaps I'll search, before someone yells at me!
The S2 trans has a shorter first, and I believe second gear, and a different final drive if I recall correctly.
It is a direct bolt in, no changes necessary.
Old 08-02-2011, 05:03 AM
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Originally Posted by ThatNewGuy
Well, the clutch pedal bracket had been replaced in 2009 according to dealer records, so I hope that's not the case, it's not squeaking, or anything like that. I know the new fluid wouldn't solve it, but make it more liveable until I can come up with 900 dollars for a transmission, lol.
The clutch pedal, when damaged, flexes and doesn't let you engage the gears properly. This increase tranny wear. It's probably one of the reasons why your tranny failed
Old 08-03-2011, 09:36 AM
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Originally Posted by bse50
The clutch pedal, when damaged, flexes and doesn't let you engage the gears properly. This increase tranny wear. It's probably one of the reasons why your tranny failed

Well, I guess that pretty much answers my question.
Lol.
Thanks guys.
Old 08-03-2011, 09:56 AM
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What sucks is im going down this same path.... 2nd, 3rd, and 5th.... with 5th being horrible to the point i almost skip the gear all together.
Old 08-03-2011, 03:20 PM
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Originally Posted by CrazyJek
What sucks is im going down this same path.... 2nd, 3rd, and 5th.... with 5th being horrible to the point i almost skip the gear all together.
Luckily 5th for me is fine.
It's the 2nd 4th and 6th for me.
3rd gear is the only one I can really have any fun in, shifting fast I mean.
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