Ok so I was driving the other day and my harmonic balancer came apart thew all the rubber out of it so I had to drive it 15 miles to get it home. Did not overheat or anything. but when I replaced the harmonic balancer It has an extended crank before it starts and once it starts has a rough idle, also if you give it a quick snap if the throttle it dies. if you rev it up and let off slowly it goes back to the rough Idle until it warms up. Amy Idaes.

 

Does it run normal after warm up??? When was your last tune-up, mine did the same thing but a tune-up fixed the problem.

 

You may have possibly damaged the engine internals. The Harmonic Balancer is there to dampen out the vibrations in the engine so it doesn't self destruct itself. If it failed on you, it's possible that the extra vibrations have lead to premature bearing wear or possibly other damage.

It could be that a chunk of rubber took out a vacuum line, too, though. Really hard to diagnose on the internet. I'd check for simple stuff like that first.

 

It runs good after warm up, just tuned it up not even 3000 miles ago. Ran perfect before the harmonic balancer went out.