1994 Chevy Fibrating

joshnkelly · 11-27-2006, 07:41 AM

I have a 1994 chevy with new plugs, wires, dist. cap, button and battery. When I go to accelerate on the interstate from 55 to 75 it vibrates all the way down to the bone (FRAME). The injectors look like they are doing ok. I am clueless. PLEASE

HELP.

75K30 · 11-28-2006, 11:31 AM

Is the vibration from a missfire? Is the problem even from the engine at all? Could be a bad transmission mount, or motor mount. Might even check the driveshaft as long as you are under the truck. A bad u-joint, or carrier bearing (two piece shaft) could be the problem.

Old Trucker · 12-20-2006, 07:56 PM

This can happen if two or more wires are on the wrong plugs

cowasockee · 12-21-2006, 07:36 AM

Quote:

Originally Posted by 75K30

A bad u-joint, or carrier bearing (two piece shaft) could be the problem.

That would be the first place I would look since it only does it under acceleration.

rbmcveigh · 12-30-2006, 07:08 AM

I have 95 Chevy that started doing about the same thing. On mine, it seems to only do it while the engine is under load though (like slight acceleration or going up a hill) while I am cruising it seems fine. While its going the vibration though, I can accelerate and get it to downshift and it works fine??? Any ideas?

11-27-2006, 07:41 AM	#1
joshnkelly Full Member Join Date: Nov 2006 Posts: 17	1994 Chevy Fibrating I have a 1994 chevy with new plugs, wires, dist. cap, button and battery. When I go to accelerate on the interstate from 55 to 75 it vibrates all the way down to the bone (FRAME). The injectors look like they are doing ok. I am clueless. PLEASE HELP.

12-30-2006, 07:08 AM	#5
rbmcveigh Senior Member Join Date: Dec 2006 Location: Virginia Posts: 55	I have 95 Chevy that started doing about the same thing. On mine, it seems to only do it while the engine is under load though (like slight acceleration or going up a hill) while I am cruising it seems fine. While its going the vibration though, I can accelerate and get it to downshift and it works fine??? Any ideas? __________________ Ryan 95 Chevy K1500 Z71 Extended Cab

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11-28-2006, 11:31 AM	#2
75K30 Senior Member Join Date: Jul 2006 Posts: 3,312	Is the vibration from a missfire? Is the problem even from the engine at all? Could be a bad transmission mount, or motor mount. Might even check the driveshaft as long as you are under the truck. A bad u-joint, or carrier bearing (two piece shaft) could be the problem.

12-20-2006, 07:56 PM	#3
Old Trucker Full Member Join Date: Dec 2006 Location: Ozarks Posts: 20	This can happen if two or more wires are on the wrong plugs