When shifting transmission from 1low to second gear it grinds bad

1987 FORD F-150
185,000 MILES • 4.9L • V6 • 2WD • MANUAL
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Some minor grinding shifting up through other gears. I can down shift from fourth to third with slight to no grinding. I cannot down shift from third to second unless I'm sitting still.
Aug 15, 2019 at 6:46 PM
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JACOBANDNICKOLAS
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Welcome to 2CarPros.

The first thing to check is to make sure the clutch master cylinder is full of fluid. The clutch is hydraulic and if it is low, it can cause this. The reservoir is under the hood on the driver's side of the firewall. If it is low, check for leaks at the master cylinder and the slave mounted on the trans.

Next, confirm the transmission fluid is clean and full. If it is low or extremely dirty, it can cause this. The information related to the type to use and capacities is listed in pic 1.



If both of those check good, then based on the mileage, it could be synchronizes in the transmission itself.

Let me know what you find.

Take care,
Joe
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Aug 15, 2019 at 7:59 PM