2nd gear grinds at high rpm shift.......low rpms it shifts fine - Ford Mustang Forum
 
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post #1 of 8 (permalink) Old 09-06-2008 Thread Starter
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2nd gear grinds at high rpm shift.......low rpms it shifts fine

My tranny grinds when i shift into second, but only at high rpms........low rpm shifts are fine.........Ive noticed the motor mounts need replacing......could that cause my problem?????
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post #2 of 8 (permalink) Old 09-06-2008
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I dont think that the motor mounts would affect it. Mine would grind when it is cold. I would change the trans fluid and see if that stops the grinding. If that does not then it could be the clutch that is slipping. Sometimes clutches slip when the rear main seal starts to leak.
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post #3 of 8 (permalink) Old 09-06-2008
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I've said it many times before..I have had two Fox body GT's, and talked to others with them also. Grinding in 2nd is a VERY common thing with the T5's. 2nd and 4th are both weak gears, and 3rd can be considerd weak also.

1986 GT-Ponies(metallic Grey)-Not trying to build a race car- E-303-E7TE Heads- Summit Racing 9.2:1 Pistons with Valve Reliefs for Cearance-Summit Rings-Clevite Bearings-Mr. Gasket Set(With exception of Felpro rubber Oil Pan Gasket)-Comp Cams Double Roller Chain-Cardone Water Pump-AutoLite 25s gapped to .043-Touring CAI-MAF Conversion with A9L-Summit Racing Off Road H-Pipe w/40 series Flowmasters-Bought the car 100% stock, even with stock exhaust, so Mods will take some time!
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post #4 of 8 (permalink) Old 09-06-2008
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I think the problems come from shifting hard and not getting it all the way in gear just think about what happens when when you make that hard shift slamming it in at high rpms we all do it and if your gears dont meet and sync. like there supposed to they eat the teeth off the gears! Eventually you will lose 2nd gear if its to late for the fluid change and synthetic would help alot for your problems but dont waste putting it in if you see metal in the fluid you drain out! Good Luck

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post #5 of 8 (permalink) Old 09-06-2008
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I got the same problem. Every other gear shifts fine and if i take it really easy 2nd will work. But if i shift with a little power it grinds or it will do it when i down shift sometimes. I've been told it was prob the syncros

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post #6 of 8 (permalink) Old 09-06-2008
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Yup. Like I said. Common problem with the t5's 2nd gear syncro. Try a good flush, and replace with some Synthetic. May, may not help. Worth a try tho.

1986 GT-Ponies(metallic Grey)-Not trying to build a race car- E-303-E7TE Heads- Summit Racing 9.2:1 Pistons with Valve Reliefs for Cearance-Summit Rings-Clevite Bearings-Mr. Gasket Set(With exception of Felpro rubber Oil Pan Gasket)-Comp Cams Double Roller Chain-Cardone Water Pump-AutoLite 25s gapped to .043-Touring CAI-MAF Conversion with A9L-Summit Racing Off Road H-Pipe w/40 series Flowmasters-Bought the car 100% stock, even with stock exhaust, so Mods will take some time!
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post #7 of 8 (permalink) Old 09-07-2008
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I don't think synthetic fluid is supposed to be good for the T-5. I would replace with the recommended fluid which I believe is Mercon 3.
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post #8 of 8 (permalink) Old 09-07-2008
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Yeah mercon V is used on them. Or dextron III...same thing..I have never heard any thing bad about using synthetic. Check it out.

1986 GT-Ponies(metallic Grey)-Not trying to build a race car- E-303-E7TE Heads- Summit Racing 9.2:1 Pistons with Valve Reliefs for Cearance-Summit Rings-Clevite Bearings-Mr. Gasket Set(With exception of Felpro rubber Oil Pan Gasket)-Comp Cams Double Roller Chain-Cardone Water Pump-AutoLite 25s gapped to .043-Touring CAI-MAF Conversion with A9L-Summit Racing Off Road H-Pipe w/40 series Flowmasters-Bought the car 100% stock, even with stock exhaust, so Mods will take some time!
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