During acceleration, ther is a rattling sound coming from the engine compartment during certain parts of the rpm curve. I am asuming that something is rattling when the RPMs hit a certain frequency... Sort of sounds like a tin plate rattling....

Would anyone have any ideas of where to look and see if something is loose? Is there a part that is know to become loose and rattle? If I can take care of this myself I would rather do that than go to a shop...

I have a 97 civic LX... Thanks!!!


Modified by aberle99 at 12:48 PM 10/22/2007

 

I would check the stock exhaust manifold heat shield and the heat shield underneath by the catalytic converter

 

Thanks!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95ProjectEJ1 &raquo;</TD></TR><TR><TD CLASS="quote">I would check the stock exhaust manifold heat shield and the heat shield underneath by the catalytic converter</TD></TR></TABLE>




I have the same problem, tighten it up or take it off.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aberle99 &raquo;</TD></TR><TR><TD CLASS="quote">Thanks!</TD></TR></TABLE>

Welcome... I hope it solves the problem.

 

If you can't pinpoint the noise to any loose heatshields then I'm going to guess that the ignition or even timing belt timing might be off, and what you're hearing is actually detonation under acceleration.

Do you have the means to have someone check the ignition timing for you?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C5-EH2 &raquo;</TD></TR><TR><TD CLASS="quote">If you can't pinpoint the noise to any loose heatshields then I'm going to guess that the ignition or even timing belt timing might be off, and what you're hearing is actually detonation under acceleration.

Do you have the means to have someone check the ignition timing for you?</TD></TR></TABLE>

First I have to check out the heatshields... If I can't pinpoint the problem, then I'll take it to my local shop as that other stuff sounds more complicated than I can handle... I am hoping it is a heatshield as my last ride (chevy S-10) had a similar problem that it rattled at certain rpms.

Oh, another thing... it seems the noise is more pronounced when the car starts driving after a cold start. Then it kinda goes away or is not as pronounced.

 

Yea sounds like your getting detonation. A heat shield is more of an annoying loud rattle especially at idle.

Does this sound like your poring a bunch of bb's into a metal bowl?

 

is this detination easily fixable? (by someone who knows what he is doing)...

I was reving th engine and I heard more rattles coming from what seemed like the bottom of the car... any clues?

Thank you so much for all your advice

 

Could get pinging from bad gas as well