Vibration
New User
Joined: Dec 2002
Posts: 5
Likes: 0
Vibration
I have a 1993 302 Custom 4x4 Manual xfer and hubs. 205,000 miles.
I have a strange vibration, it feels like the vibration you get from a manual tranny when you shift too early then try to accelerate. It seems to vibrate at a certain combination of acclerater position and RPM regardless of speed. If I tromp it, when the tranny kicksdown it goes away and crusies fine until I try to climb or pass under light to moderate accel.
I have considered everything from the vacuum actuator to the kickdown linkage to the Ujoints to the TPS (Throttle Pos. Sen) to the egr valve. Frankly I am begining to feel like an automotive hypochondriac.
But I have yet to truly tackle the problem.
I have about 2,000 miles of travel planned for Christmas and just want to make sure my family is not stranded on the road somewhere.
Any ideas.
Also I did a tune up the other day, plugs, wires cap and rotor. It has NEVER idled rough before... now it does. ARRRRG.
"God played in the mud too...HE made a man"
I have a strange vibration, it feels like the vibration you get from a manual tranny when you shift too early then try to accelerate. It seems to vibrate at a certain combination of acclerater position and RPM regardless of speed. If I tromp it, when the tranny kicksdown it goes away and crusies fine until I try to climb or pass under light to moderate accel.
I have considered everything from the vacuum actuator to the kickdown linkage to the Ujoints to the TPS (Throttle Pos. Sen) to the egr valve. Frankly I am begining to feel like an automotive hypochondriac.
But I have yet to truly tackle the problem.
I have about 2,000 miles of travel planned for Christmas and just want to make sure my family is not stranded on the road somewhere.
Any ideas.
Also I did a tune up the other day, plugs, wires cap and rotor. It has NEVER idled rough before... now it does. ARRRRG.
"God played in the mud too...HE made a man"
Lead Driver
Joined: Sep 2002
Posts: 9,182
Likes: 12
From: Gateway to the West
Vibration
Is it serious knock and ping? And does it idle like its missing a cylinder at a stop after its warmed up?
Just checking really, becasue mine does much the same thing but it sounds like knock and ping at highway speeds once its dropped into OD.
I was told that perhaps replacing Knock sensor (back of the block, top of the engine) should help this problem. Haven't done it yet.
Just checking really, becasue mine does much the same thing but it sounds like knock and ping at highway speeds once its dropped into OD.
I was told that perhaps replacing Knock sensor (back of the block, top of the engine) should help this problem. Haven't done it yet.
New User
Joined: Dec 2002
Posts: 5
Likes: 0
Vibration
Actually the only noise (rough idle) is from the exhaust rattling cause the Muff is rusting out. Good excuse for the Borla 3 inch duals for Christmas right?
Fortunatley for me the rough idle is a recent thing (since my tune up Sunday) and I think I might be able to correct it with a PCV (which I failed to replace) and that trick someone mentioned about wd40 in the new plug wires. I had a hard time getting them on. Maybe one is not on good.
The vibration in the tranny has been there since I bought it 9 months ago, but has no sound to it. Infact, alot of passengers mistake it for road vibration, you feel it mostly through the accelerator linkage and it can be reproduced at will if you know the conditions it comes under.
"God played in the mud too..."
Fortunatley for me the rough idle is a recent thing (since my tune up Sunday) and I think I might be able to correct it with a PCV (which I failed to replace) and that trick someone mentioned about wd40 in the new plug wires. I had a hard time getting them on. Maybe one is not on good.
The vibration in the tranny has been there since I bought it 9 months ago, but has no sound to it. Infact, alot of passengers mistake it for road vibration, you feel it mostly through the accelerator linkage and it can be reproduced at will if you know the conditions it comes under.
"God played in the mud too..."
New User
Joined: Dec 2002
Posts: 5
Likes: 0
Vibration
I did have a knocking and pinging thing under acceleration last week. But I ran a couple of tanks of premium through it and it went away. Cheap gas from 7-11 can do some strange things.
"God played in the mud too...
"God played in the mud too...
Hotshot
Joined: Oct 2002
Posts: 18,488
Likes: 22
From: The Big, Oregon
Vibration
Do you have an E4OD tranny? If so, it sounds like the lockup in the torque converter is slipping. Under constant speeds on fairly level ground, it is fine, but ask for more and you get a kinda shuddering feeling? Try it in drive, and see if it does the same thing.
Jared
Jared
New User
Joined: Dec 2002
Posts: 5
Likes: 0
Vibration
If I hit the shifter button to drop out of over drive, it goes away for awhile but then it ocmes back. As soon as it shifts back to overdrive at that RPM, but it is not constant.
One other person said it sounded like something to do with the torque converter, another seemed to think it was a tranny mount that was loose but I have a hard time accepting that.
"God played in the mud too..."
One other person said it sounded like something to do with the torque converter, another seemed to think it was a tranny mount that was loose but I have a hard time accepting that.
"God played in the mud too..."
