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Old 07-22-2012, 12:03 AM
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Default Grinding while in gear

So this is new to me. I've herd of grinding while shifting into gear as a result of worn syncros. But I'm getting a humming/grinding noise while I'm already in gear. I havnt singled out any particular gears but I'll just be going along and I can hear this dull grind and I can feel it through the shifter knob. It lasts a couple seconds then goes away if I pull it out and push it back in or if I push it harder into gear. I'm gonna do a transmission flush tomorrow at work. Costs me like 10 bucks. Any ideas?
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Old 07-22-2012, 12:18 AM
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Either synchro's or the gears in the trans are getting fubared

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Old 07-22-2012, 12:37 AM
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its the syncros mine did the same thing. the blocker rings are worn. time for a rebuild. or it will start pooping out of gear.

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Old 07-22-2012, 01:01 AM
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Haven't had the opportunity to rebuild any light vehicle trans, but have seen this on some heavy equipment (tri-axle dump trucks) where the synchro's would start to wear causing it to grind/whine in gear. also noticed that the bearings were getting some wear causing some of the shims to get slapped around a bit and worn down. wasn't 100% sure as to the root of the cause, but replaced it all and never did it again. might as well spend the $10 for the flush and check the fluid for any signs of metallic wear/breakdown.
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Old 07-22-2012, 01:11 AM
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No idea....but on a first gen with a M20, M21 or M22 before going into reverse, you're supposed to go into first gear first and then reverse.

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Old 07-22-2012, 05:10 PM
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do yourself a favor. Look on car-part.com for a T-5 tranny out of a 93-02 and swap it. I only did it a couple times. could usually find them for around 300

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