clutch problem ?
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Posting Guru
Joined: Oct 2002
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From: Dededo, Guam
clutch problem ?
i have a 90' f150 w/ 300 I6 4x4 5spd, just took it on a cross country trip. the clutch acted funny on the whole trip. when on the highway at normal speeds for an extended amount of time the clutch would act up. whenever i went to shift the clutch pedal would sink almost all the way to the floor before i would feel it do anything. and once it didnt do anything, it just dropped to floor and stayed there. whenever i started moving through the gears the problem would dissappear. street driving is fine, only on extended highway trips will the clutch act up. if anyone could shed some light on this mystery i would greatly appreciate it.
J.R.
90' f150 xlt lariat
300 I6 4x4 5spd
3" body lift and 33 x 12.5" tires
J.R.
90' f150 xlt lariat
300 I6 4x4 5spd
3" body lift and 33 x 12.5" tires
Postmaster
Joined: Dec 2001
Posts: 3,742
Likes: 2
From: UT
clutch problem ?
Kind of a guess, but could it be the hydraulic/brake fluid? Low on fluid? fluid has water in it and boils when it gets hot enough causing a bubble in the line that allows the pedal to fall to the floor?
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Posting Guru
Joined: Oct 2002
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From: Dededo, Guam
clutch problem ?
i'll keep poking around in the tranny. the fluid is fine, a little off color from age but it is still at the top of the filling hole. i plan on changing out all the drivetrain fluids soon (2 diffs, tranny, and transfer case) maybe that might fix it if there is water in with the fluid. be cheap and easy to do before i look into the linkage
J.R.
J.R.
Post Fiend
Joined: Jan 2002
Posts: 5,859
Likes: 7
From: USA
clutch problem ?
its either the slave cylinder leaking by or the clucth master cylinder
leaking by . look for evidence of leakage around the bottom of the bell housing or the clutch pedal pushrod that goes through the firewall.
You aren't going to like this but its a sealed unit requiring the entire
systen being replaced !
Rich
leaking by . look for evidence of leakage around the bottom of the bell housing or the clutch pedal pushrod that goes through the firewall.
You aren't going to like this but its a sealed unit requiring the entire
systen being replaced !
Rich
Elder User
Joined: Feb 2000
Posts: 601
Likes: 1
From: South Sioux City, NE USA
clutch problem ?
My truck did the exact same thing. Just before the trans ate itself. What is happening is that something is overheating the slave cylindar and boiling the fluid. The reason mine did it was because it spun the input shaft bearing, and then proceeded to eat the input shaft gear. Make sure your trans is full of (good) fluid and then try to determine what is causing all of the heat.
Roger Lane
Roger Lane
Junior User
Joined: Aug 2002
Posts: 57
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clutch problem ?
You need to check the fluid that is in a little cup that is located beside the master cylinder and not the fluid in the transmission its self. I think that this was given eariler in another post, but your reply back to it sounded more like you checked the fluid in the transmission and not under the hood. It really sounds like you are low on fluid or the line has air in it. Hope this helps.
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