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post #1 of 4 Old October 14th, 2017, 06:00 AM Thread Starter
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Exclamation Rough gearshifts

I have a 2005 mustang gt 4.6L basically stock. I need help fixing a problem when i shift gears. Starting off the line is fine but shifting into 2nd or 3rd, it's sometimes hard to get it into gear. (Clutch all the way in, foot off the gas) it's like it doesn't let it go into the next gear if I redline it or even get close to red line. What could the problem be? Changed transmission oil about 1000 miles!!!
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post #2 of 4 Old October 14th, 2017, 04:36 PM
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The motor and tranny shift when under load. Some have installed torque limiters which will limit the movement of the transmission. Some have had success with them and others haven't. I would think that some stiffer motor mounts along with torque limiters would help alleviate the issue. I know some say you need to run a certain fluid too. 'I think its synchromesh, penzoil.

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post #3 of 4 Old October 14th, 2017, 05:14 PM
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On top of what boss said, what clutch are you running? That could be another reason youre getting locked out.

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post #4 of 4 Old October 15th, 2017, 03:03 AM
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If the problem only occurs near redline rpm, your engine mounts could be shot and allowing the engine (with tranny) to move under its own torque.

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