Crankshaft Pulley Vibration, 94 accord lx, HELP
 

I bought this accord 5 months ago with only 93k. I changed the front
engine mount since it caused vibration at idling. I also changed timing
belt, water pump and all three drive belts 1 month ago. Now the car
runs fine although at idling there is still some vibration. Since it's
much better than before I replaced the front engine mount, it dosent'
bother me too much.

Today when I topped off the ps oil while the car idling, I niticed the
crankshaft pulley (and the other pulley? seems like there are two
pulleys there) has some vibration, while the other two pulleys above
have no vibration at all. IS THIS NORMAL?do all crankshat pulleys have
some vibration when the car idling? I am afraid the honda dealer
screwed something while they did the water pump job.

I searched this board, sb said there is some seal between these two
pulleys, when it's broken, the crankshaft could come off. I hope that's
not the problem I am having right now.

ANY INPUT is WELCOME!

Re: Crankshaft Pulley Vibration, 94 accord lx, HELP
 

"zachb" <zbhope@yahoo.com> wrote in message
news:1136690251.746190.18770@g44g2000cwa.googlegro ups.com...
>I bought this accord 5 months ago with only 93k. I changed the front
> engine mount since it caused vibration at idling. I also changed timing
> belt, water pump and all three drive belts 1 month ago. Now the car
> runs fine although at idling there is still some vibration. Since it's
> much better than before I replaced the front engine mount, it dosent'
> bother me too much.
>
> Today when I topped off the ps oil while the car idling, I niticed the
> crankshaft pulley (and the other pulley? seems like there are two
> pulleys there) has some vibration, while the other two pulleys above
> have no vibration at all. IS THIS NORMAL?do all crankshat pulleys have
> some vibration when the car idling? I am afraid the honda dealer
> screwed something while they did the water pump job.
>
> I searched this board, sb said there is some seal between these two
> pulleys, when it's broken, the crankshaft could come off. I hope that's
> not the problem I am having right now.
>
> ANY INPUT is WELCOME!
>
I'm not sure I understand - are you saying the crankshaft pulley wobbles, or
that it doesn't seem to be round, or something else?

As to the vibration, if the transmission is automatic rather than manual the
rear engine mount should change to a softer mode when idling in gear. The
lever that operates an internal valve can be seen to turn under those
conditions if the control is working correctly, although it may be easier to
feel the movement than to see it.

Mike

Re: Crankshaft Pulley Vibration, 94 accord lx, HELP
 

whoever was doing timing belt change didn't properly refit crankshaft
pulley, i don't think it really matters that much since this isn't
aftermarket pulley but overtime it will cause wear on plastic cover in some
places, im not really sure about marks on the stock honda pulley, maybe
there are some marks like btdc or something like that; personally i wouldn't
touch it till ur next timming belt change, hope it helps, N.S
"Michael Pardee" <michaeltnull@cybertrails.com> wrote in message
news:yu2dnQNO7sjRf1zeRVn-jQ@sedona.net...
> "zachb" <zbhope@yahoo.com> wrote in message
> news:1136690251.746190.18770@g44g2000cwa.googlegro ups.com...
> >I bought this accord 5 months ago with only 93k. I changed the front
> > engine mount since it caused vibration at idling. I also changed timing
> > belt, water pump and all three drive belts 1 month ago. Now the car
> > runs fine although at idling there is still some vibration. Since it's
> > much better than before I replaced the front engine mount, it dosent'
> > bother me too much.
> >
> > Today when I topped off the ps oil while the car idling, I niticed the
> > crankshaft pulley (and the other pulley? seems like there are two
> > pulleys there) has some vibration, while the other two pulleys above
> > have no vibration at all. IS THIS NORMAL?do all crankshat pulleys have
> > some vibration when the car idling? I am afraid the honda dealer
> > screwed something while they did the water pump job.
> >
> > I searched this board, sb said there is some seal between these two
> > pulleys, when it's broken, the crankshaft could come off. I hope that's
> > not the problem I am having right now.
> >
> > ANY INPUT is WELCOME!
> >
> I'm not sure I understand - are you saying the crankshaft pulley wobbles,
or
> that it doesn't seem to be round, or something else?
>
> As to the vibration, if the transmission is automatic rather than manual
the
> rear engine mount should change to a softer mode when idling in gear. The
> lever that operates an internal valve can be seen to turn under those
> conditions if the control is working correctly, although it may be easier
to
> feel the movement than to see it.
>
> Mike
>
>

Re: Crankshaft Pulley Vibration, 94 accord lx, HELP
 

"rafal slodkowski" <northernsun@sympatico.ca> wrote in message
news:skHwf.6682$Pq4.131783@news20.bellglobal.com.. .
> whoever was doing timing belt change didn't properly refit crankshaft
> pulley, i don't think it really matters that much since this isn't
> aftermarket pulley but overtime it will cause wear on plastic cover in
> some
> places, im not really sure about marks on the stock honda pulley, maybe
> there are some marks like btdc or something like that; personally i
> wouldn't
> touch it till ur next timming belt change, hope it helps, N.S

If the pulley isn't fitted to the crankshaft properly it will chew up the
mating area pretty quickly... not a great big deal if the crank is much
harder than the pulley (you'll just need a new pulley) but I suspect they
are similar in hardness. Replacing the crank is something you don't want to
do! Verify or rule this out now.

Mike

Re: Crankshaft Pulley Vibration, 94 accord lx, HELP
 

Thanks for all the input, guys.

I hope I don't need another big job on my car.

Re: Crankshaft Pulley Vibration, 94 accord lx, HELP
 

Mike

thanks, the crankshaft pulley wobbles a little. Somebodya suggested
this might be the balance shaft out of time.

Re: Crankshaft Pulley Vibration, 94 accord lx, HELP
 

Another possibility: I wonder if the key that helps affix
the pulley is worn and so allowing a bit of play (or the
pulley itself is worn where the key fits). The key costs
only a few bucks. Might want to change it. A substitute used
pulley might be had for $50.

The pulley bolt seems tight, right? Definitely check that
a.s.a.p.

That this started after you did the timing belt change does
suggest it wasn't all put together quite correctly. Maybe,
unfortunately, redo the whole job. When you get to the
pulley, wiggle it and see if there's any play there.

"zachb" <zbhope@yahoo.com> wrote
> thanks, the crankshaft pulley wobbles a little. Somebodya
suggested
> this might be the balance shaft out of time.
>