5th gear issues
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5th gear issues
Hey ya’ll!
so I just bought a 95 F150 XL 5spd
I found that everytime I shift into 5th gear it doesn’t want to stay. Seems like it pops out because my Rpms are to low. Is that a thing?
I have never driven a stick truck and I was cruising in 4th gear at about 70 mph is that normal? Any info could help thanks!!
so I just bought a 95 F150 XL 5spd
I found that everytime I shift into 5th gear it doesn’t want to stay. Seems like it pops out because my Rpms are to low. Is that a thing?
I have never driven a stick truck and I was cruising in 4th gear at about 70 mph is that normal? Any info could help thanks!!
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Joined: Apr 2004
Posts: 34,474
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Welcome to FTE!
It should not pop out of gear at any speed or RPM. Running right, you ought to be able to run 30MPH in 5th without trouble. (Unless you have huge tires). You won't accelerate easily, but the engine should be able to maintain steady speed in 5th.
At 70 you would used 4th on a hill but 5th in almost all other conditions. I usually skip 3rd and 4th or at least one of those in reguler unhurried flat land light traffick driving.
Transmissions pop out of gear because components are worn. The synchros are suspect, and in the case of your Mazda built "M5OD", the shifter and shift forks are suspect.
Are you much of a wrench spinner? Because some wrenchs have to spin here to inspect the innards of that transmission.
It should not pop out of gear at any speed or RPM. Running right, you ought to be able to run 30MPH in 5th without trouble. (Unless you have huge tires). You won't accelerate easily, but the engine should be able to maintain steady speed in 5th.
At 70 you would used 4th on a hill but 5th in almost all other conditions. I usually skip 3rd and 4th or at least one of those in reguler unhurried flat land light traffick driving.
Transmissions pop out of gear because components are worn. The synchros are suspect, and in the case of your Mazda built "M5OD", the shifter and shift forks are suspect.
Are you much of a wrench spinner? Because some wrenchs have to spin here to inspect the innards of that transmission.
Thread Starter
|
New User
Joined: Feb 2020
Posts: 3
Likes: 0
Welcome to FTE!
It should not pop out of gear at any speed or RPM. Running right, you ought to be able to run 30MPH in 5th without trouble. (Unless you have huge tires). You won't accelerate easily, but the engine should be able to maintain steady speed in 5th.
At 70 you would used 4th on a hill but 5th in almost all other conditions. I usually skip 3rd and 4th or at least one of those in reguler unhurried flat land light traffick driving.
Transmissions pop out of gear because components are worn. The synchros are suspect, and in the case of your Mazda built "M5OD", the shifter and shift forks are suspect.
Are you much of a wrench spinner? Because some wrenchs have to spin here to inspect the innards of that transmission.
It should not pop out of gear at any speed or RPM. Running right, you ought to be able to run 30MPH in 5th without trouble. (Unless you have huge tires). You won't accelerate easily, but the engine should be able to maintain steady speed in 5th.
At 70 you would used 4th on a hill but 5th in almost all other conditions. I usually skip 3rd and 4th or at least one of those in reguler unhurried flat land light traffick driving.
Transmissions pop out of gear because components are worn. The synchros are suspect, and in the case of your Mazda built "M5OD", the shifter and shift forks are suspect.
Are you much of a wrench spinner? Because some wrenchs have to spin here to inspect the innards of that transmission.
I have dabbled in wrench spinning hahaha I’m by no means a pro. I do have a good mechanic though that can check it out.
so one more question would it cause any damage running at 65 or 70 in 4th
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Joined: Apr 2004
Posts: 34,474
Likes: 2,800
65 or 70 in 4th was the way the world worked prior to the wide adoption of overdrives in the late '70s through the '90s, by which time it was getting hard to find a trans without OD.
That said, it depends on RPM. If you have a tach you can easily see where you're at. You should be around 3000 RPM at 70 if you have 3.55 gears and 28" tires. More or less with different gears or tires. 3000 will run all day as will 3500, but 3500 will wear on you due to noise.
The floor of your cab should have a removable panel. Once that's out of the way, the top of that transmission comes off. The shifter and shift forks can be inspected or replaced if needed. Synchros and general health can be assessed. There are rubber plugs for the shift rails--they leak. Check for that and replace them while you're working on it. Despite costs, having a good mechanic do the job would be a good way to go. Ask first if he's familiar with this setup. Generally it's ok to pay for the job, not so much to pay for the guy to self train on your dime.
That said, it depends on RPM. If you have a tach you can easily see where you're at. You should be around 3000 RPM at 70 if you have 3.55 gears and 28" tires. More or less with different gears or tires. 3000 will run all day as will 3500, but 3500 will wear on you due to noise.
The floor of your cab should have a removable panel. Once that's out of the way, the top of that transmission comes off. The shifter and shift forks can be inspected or replaced if needed. Synchros and general health can be assessed. There are rubber plugs for the shift rails--they leak. Check for that and replace them while you're working on it. Despite costs, having a good mechanic do the job would be a good way to go. Ask first if he's familiar with this setup. Generally it's ok to pay for the job, not so much to pay for the guy to self train on your dime.
Thread Starter
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New User
Joined: Feb 2020
Posts: 3
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65 or 70 in 4th was the way the world worked prior to the wide adoption of overdrives in the late '70s through the '90s, by which time it was getting hard to find a trans without OD.
That said, it depends on RPM. If you have a tach you can easily see where you're at. You should be around 3000 RPM at 70 if you have 3.55 gears and 28" tires. More or less with different gears or tires. 3000 will run all day as will 3500, but 3500 will wear on you due to noise.
The floor of your cab should have a removable panel. Once that's out of the way, the top of that transmission comes off. The shifter and shift forks can be inspected or replaced if needed. Synchros and general health can be assessed. There are rubber plugs for the shift rails--they leak. Check for that and replace them while you're working on it. Despite costs, having a good mechanic do the job would be a good way to go. Ask first if he's familiar with this setup. Generally it's ok to pay for the job, not so much to pay for the guy to self train on your dime.
That said, it depends on RPM. If you have a tach you can easily see where you're at. You should be around 3000 RPM at 70 if you have 3.55 gears and 28" tires. More or less with different gears or tires. 3000 will run all day as will 3500, but 3500 will wear on you due to noise.
The floor of your cab should have a removable panel. Once that's out of the way, the top of that transmission comes off. The shifter and shift forks can be inspected or replaced if needed. Synchros and general health can be assessed. There are rubber plugs for the shift rails--they leak. Check for that and replace them while you're working on it. Despite costs, having a good mechanic do the job would be a good way to go. Ask first if he's familiar with this setup. Generally it's ok to pay for the job, not so much to pay for the guy to self train on your dime.
I love this truck and I’ll do what I have to to make sure she runs for a long time.
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