Shuddering on take off
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Joined: Jan 2003
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Shuddering on take off
Hello there.
I was hoping someone has had the same problem that I am having with my truck.
I am experiencing a shudder on take off. the truck is a 78 f100 2x4 inline six 3 in the tree standard. the clutch doesn't slip and the transmission sounds good although it does pop out of first decellerating. any ideas.
I was hoping someone has had the same problem that I am having with my truck.
I am experiencing a shudder on take off. the truck is a 78 f100 2x4 inline six 3 in the tree standard. the clutch doesn't slip and the transmission sounds good although it does pop out of first decellerating. any ideas.
Elder User
Joined: Oct 2002
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From: Seattle/Tacoma Washington U.S.A.
Shuddering on take off
check your shift linkage, this is really easy to do. Get under your truck and have somone move the 3 on the tree up and down and you will see where the linkage is, and by moveing it with your hand you will be able to tell if it is out of adjustment, about the shuddering, I would check your cluch and make sure it is not the problem, and maybe try adjusting the pedal some.
Last edited by Torque1st; Jan 26, 2003 at 02:02 AM.
Senior User
Joined: Nov 2001
Posts: 444
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From: Cleveland
Shuddering on take off
I just parted out a 75 F150 with a 300/ 3spd. It ran, drove it around the yard and it shuddered very badly when driving, at any speed, forward/reverse. When I pulled the engine and trans and seperated them, I found that the shaft that the throw-out bearing rides on was very gummed up and wouldn't allow the bearing to slide easily. The bearing was also bad as was the pilot bearing in the crank. I would check your throwout bearing.
Lenny
Lenny
Last edited by Torque1st; Jan 26, 2003 at 02:02 AM.
Elder User
Joined: Aug 2002
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From: CA
Shuddering on take off
Grease or oil on the clutch will cause shuddering even if the clutch doesn't ordinarily slip. In fact, sometimes fluid on the clutch can cause a locking effect. Hot spots on the flywheel can cause this too. So I'd really suspect the clutch! If it is fluid on the clutch (almost always oil) it's usually engine oil from a bad rear seal, but sometimes it's tranny oil from a bad front tranny seal.
Clutch linkage can bind as well, causing a similar effect.
You can check for bad motor mounts easily buy opening the hood so you can see the air cleaner from the drivers seat. Put your emergency brake on hard, then put the tranny in gear and let the clutch up till just before it stalls. If each time you do this, the air cleaner moves to one side more then an inch or so, suspect a bad or soft engine mount (it's usually the one on the drivers side).
Clutch linkage can bind as well, causing a similar effect.
You can check for bad motor mounts easily buy opening the hood so you can see the air cleaner from the drivers seat. Put your emergency brake on hard, then put the tranny in gear and let the clutch up till just before it stalls. If each time you do this, the air cleaner moves to one side more then an inch or so, suspect a bad or soft engine mount (it's usually the one on the drivers side).
Last edited by Torque1st; Jan 26, 2003 at 02:03 AM.
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Joined: Dec 2002
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Shuddering on take off
When I learned to drive a stick(79 f150 300i6 4wd), I heated the clutch so much that I warped it. Half the flywheel was blue. Those little springs in the middle of the clutch also lost their temper and were just rattling around. I experienced problems similar to yours except the truck bucked around a little while transitioning from coast to throttle, but that would have been from those springs. My wife is learning to drive a stick now. Guess what? My Olds shudders when it starts now too. After all, she learned from the best
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Joined: Sep 2001
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Shuddering on take off
This is a little off topic but it has been brought up... The easiest way to teach someone about the clutch is to put the novice in the vehicle in a flat (empty) parking lot. Tell them to start the vehicle moving WITHOUT touching the throttle. It usually takes 3-4 starts like that to get the feel for the clutch. Let the clutch cool off between each try while explaining to the novice the "noises" they hear. After they have mastered that, introduce the throttle. Teach them to use the E-Brake for hills to gain confidence. I have taught 8 "students" on the same clutch using this technique and the vehicle clutch is still OK at 140,000 miles.
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From: Louisville,Ky.
Shuddering on take off
Sounds like the springs in the clutch disk are weak. This is the usual reason for the chatter. You can live with it until it slips or go ahead and replace the clutch, pressure plate, throw out bearing, and don't forget the pilot bushing!!