Bad Vibrations
- Thread starter bbbngowc
- Start date
Have you done anything to the car lately that involved the DS?
If so I would check that and make sure that all of the bolts on the DS to differential plate are tight.
Also do you still have the dampner, dogbone, on the diff housing? If you don't you might want to find one at the JY and put it on.
If so I would check that and make sure that all of the bolts on the DS to differential plate are tight.
Also do you still have the dampner, dogbone, on the diff housing? If you don't you might want to find one at the JY and put it on.
Seeing that I don't know what the DS is, I'd say no, I haven't done anything to it.
What's a dampner, dogbone, on the diff housing?
Yeah I was told the harmonic balancer could be the problem. Before I changed it, I wanted to make sure this is what it really was. It's a bytch to change.
I checked mine and it's pretty solid, doesn't move or anything. The rubber looks good too. How did yours look?
Repostyle
Member
DS = Drive Shaft
On your rearend there's a dampener that looks like a dog bone. It's two square blocks bolted to the front of the differential housing.
Where do you think the vibration is coming from, rearend, frontend, engine, steering, etc.? Without knowing this its kind of hard to say "oh yeah it's the ..."
Are you in the same gear each time when your doing 1000 rpm or does it do the same thing in all gears at 1000rpm.
All I can say from expierience is U-joints. I had a vibration at a certian speed and it turned out to be warn out U-joints. I'm not saying that's what your problem is, just saying that's one possibility
cenok is family
15 Year Member
The car idles at about 1000RPM. It vibrates at idle. And the vibrations are coming from the frontend of the vehicle.
I've already changed the engine mounts too. I thought that was the cause at first. After I changed the mounts, the car still shook (violently).
SuperStang83
Founding Member
Repostyle
Member
So your vibration happens all the time including just parked and idling? Okay, that narrows it down to the engine. It could be the HB or maybe it dropped a cylinder. Have your checked the compression and made sure all cylinders are firing?
Actually I haven't checked the firing. I did check the spark plug wires but I didn't check to see if they're all firing. How do I do this?
Repostyle
Member
not nessacarily, it might feel smoother but it could still be missing. To check it the easy way: Start the engine. Pull one plug wire at a time, if the engine starts to run worse then that cylinder is firing, if you don't hear a change in the idle that cylinder is dead.
If the cylinder is dead then it could be one or all of a few things. Injector, plug, wire, valve... etc.
If the cylinder is dead then it could be one or all of a few things. Injector, plug, wire, valve... etc.
Repostyle
Member
black87ttop
Member
hahah lol. Oh man they were supposed to tell you to use a pair of platic pliers, or metal ones witha real heavy rubber handle. did you just get the car, has it always vibed? Did it just start out of nowhere? Possible the owner before you put the wrong flywheel on. I put a new billet steel flywheel on that i bought off ebay. whoops seller listed it as wrong weight and when i drove the car it almost fell apart. But check your firing order and just start checking things off.
If you have a temp sensor. one of those point and shoot ones you can check the headders. The temps will be drastically different. I found this out by having a 302 firing order with a 351 cam. Thought it was cam timing or this or that. Just pulled out a temp sensor and saw that only 1/2 the cylinders were fireing and well figured out that the plugs were in the wrong order.
