I have a 91 dx hatchback 5 speed stock just intake and lowered, when i start the car it is fine and then when i take my foot off of the clutch, it is the most annoying sound ever, it sounds like grinding and scratching, i was told that it might be the throw out bearing, my car also needs a new clutch and pressure plate, could it be that hitting each other (maybe).

Also when i start the car the idle shoots up to around 2-2500 and stays there, it stays like that until it is warm, but somethmes it keeps going even if the car is warm. i checked all the vaccum lines to see if leak, did not find anything but when it warms up the idlewill go all the way down to around 500-700rpms
thanks in advace

 

For the noise, it's probably the throwout bearing, those go bad quite often on these older cars. It could also be the input shaft bearing in the transmission, but that's not quite as common. If you're driving and put the clutch in and coast, does the noise go away or does it continue?

 

when foot on the clutch no noise, when foot is off the clutch noise, no matter whether i am driving or not
so to answer your question if i am driving and put the clutch in to coast, the noise goes away

how hard is it to replace? should i replace it or get a new tranny?, or maybe an engine swap?

 

btw, it is a stock engine with about 134xxxmile on it

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by efgrey87 &raquo;</TD></TR><TR><TD CLASS="quote">when foot on the clutch no noise, when foot is off the clutch noise, no matter whether i am driving or not
so to answer your question if i am driving and put the clutch in to coast, the noise goes away

how hard is it to replace? should i replace it or get a new tranny?, or maybe an engine swap?</TD></TR></TABLE>

I had this happen on a 90 Si, and yes, same sound, during the same circumstances... throw-out bearing.

I wound up having transmission shop replace the clutch with an aftermarket jobber while they were in there.

 

Does it make a winding noise in gear as you drive? If so it might be your main input shaft bearing.

 

what do you mean by winding noise?

 

If the noise goes away while driving when you put the clutch in, it's the throwout bearing. It's not hard to replace, really, just have to take out the transmission. May as well do a clutch while you're in there.

 

&lt;-----Being nit picky

I can't stand the term throw-out bearing b/c people use the term interchangably for either the clutch release bearing or the pilot bearing. Why not just say "clutch release bearing" or "pilot bearing."

Are you guys talking about the pilot bearing?

 

Fine then, picky guy, clutch release bearing!

You are right, and I'm usually just as picky. Guess I'm more lazy though.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drdisco69 &raquo;</TD></TR><TR><TD CLASS="quote">If the noise goes away while driving when you put the clutch in, it's the throwout bearing. It's not hard to replace, really, just have to take out the transmission. May as well do a clutch while you're in there.</TD></TR></TABLE>

Sorry to say this but its not the throw out bearing. Follow me here

The throw out bearing is not spinning when the clutch pedal is up, but when you setp on the clutch, the inner race of the throw out bearing is spinning. So if you step on the clutch pedal and you hear a noise, more then likely its the throw out bearing.

There is also the pilot bearing, this will make noise when ever the clutch pedal is up, because the input shaft is spinning. But when you step on the clutch, this disegages the trans from the engine, meaning the input shaft is not spinning. So the inner race on the pilot bearing is not spinning but the outer is. Make sense ? There fore when the clutch is up, the trans and engine are spinning at the same speed, and the inner and outer race of the pilot bearing are spinning at the same speed also.

There is also the input shaft and this will make a noise if the clutch pedal is up, but this noise somtimes is a lot louder and usually a thumping type of noise ( if it gets bad enough.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 88 rex &raquo;</TD></TR><TR><TD CLASS="quote">&lt;-----Being nit picky

Why not just say "clutch release bearing" or "pilot bearing."
</TD></TR></TABLE>

Those are two different things, one is the bearing that releases the clutch, and one is in the flywheel. The pilot bearing is in the flywheel.

I call it the throw out bearing because thats the term used every where.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 90blackcrx &raquo;</TD></TR><TR><TD CLASS="quote">But when you step on the clutch, this disegages the trans from the engine, meaning the input shaft is not spinning.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drdisco69 &raquo;</TD></TR><TR><TD CLASS="quote">If you're driving and put the clutch in and coast, does the noise go away or does it continue?</TD></TR></TABLE>

If the car were sitting still, what you are saying is correct. But I was asking him to push in the clutch while the car was rolling and the transmission was in gear. In that case, the input shaft would continue turning the same speed it was, possibly giving an indication as to whether the noise was from the input shaft or the clutch release bearing.

 

just my .02 but I had this exact thing happen to mine and it turned out to be the input shaft bearing. I had to get a new tranny, kinda nice though because I ended up with a 5spd as opposed to the 4 that it had before.

 

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

Those are two different things, one is the bearing that releases the clutch, and one is in the flywheel. The pilot bearing is in the flywheel.

I call it the throw out bearing because thats the term used every where.</TD></TR></TABLE>

I know that and that's exactly what I'm saying. They are two different parts yet people interchangably use the term "throw out bearing" for either bearing.

Back on topic:

I think your best bet is to drop the tranny and take a look. Have both bearings handy anyway.

 

may i ask where these bearing are located so whe i drop the tranny i can know what i am looking at thanks guy

 

i just went on to the napa web site to get these bearing and there is no input shaft bearing there is only the clutch relese bearing and the clutch pilot bearing which one should i buy or if i bought a clutch kit would they come with it?? here is a link i hope it works
http://www.napaonline.com/cgi-...tring=

 

sry dont think that link worked, no one has any pics or comments thanks in advanced

 

If it makes the noise with the clutch released...Its the input shaft bearing. Its not a beginners job. You have to take the transmission case apart. Your throw out bearing or clutch release bearing will make a noise as your releasing (engaging) the clutch and only then.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by efgrey87 &raquo;</TD></TR><TR><TD CLASS="quote">

Also when i start the car the idle shoots up to around 2-2500 and stays there, it stays like that until it is warm, but somethmes it keeps going even if the car is warm. i checked all the vaccum lines to see if leak, did not find anything but when it warms up the idlewill go all the way down to around 500-700rpms
thanks in advace</TD></TR></TABLE>

mine does the same thing, who do i make it idel at 900 when warm? it idels at 500-600 when warm

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ChrisColeman &raquo;</TD></TR><TR><TD CLASS="quote">If it makes the noise with the clutch released...Its the input shaft bearing. Its not a beginners job. You have to take the transmission case apart. Your throw out bearing or clutch release bearing will make a noise as your releasing (engaging) the clutch and only then. </TD></TR></TABLE>

If you are sitting still with the clutch released, it could be the pilot bearing.

 

Well yeah..maybe , but Ive never seen a pilot bearing go before the other bearings. ****, Ive never replaced a bad pilot bearing in a Honda.

 

the pilot bearing is only 15 bucks to replace and a little labor on your part....unless you have to have a machine shop press it out, but it still wouldn't be that expensive to get pressed.

 

i am looking at the haynes maunal and it has the clutch release bearing but no other bearings, it has them but only says "ball bearing" for like 5 diffeerant one, i dont kno where the input shaft bearing is? thanks in advance

 

an aftermarket clutch kit will come with the clutch release (throwout bearing) and the pilot bearing. I'm sure you could probably get a stock clutch from the dealer without the bearings though, but you'd just have to buy them separately then. I wouldn't replace any of it without replacing all of it.

Anyway, the clutch release bearing goes around the input shaft (it's considerably big), the pilot bearing is just a little bearing that goes in the middle of the flywheel, and then the end of the input shaft goes through the inner race when the tranny goes on, and the input shaft bearing is inside the tranny so you can't see it without pulling the case apart. Like someone mentioned, the input shaft bearing isn't a beginner's job.

 

i was at a friends house the other day and i was in his garage, we have done 2 engine swap in his 4door, sohc vtec, and then a b18, but he has an extra d series tranny and i was wondering if i could use the bearing off of that tranny? i dont kno if it will work i was just wondering, thanks