Help! 318I making horrible high pitch sound! - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

 
LinkBack Thread Tools Display Modes
#1 (permalink) Old 07-02-2004, 10:41 AM
n00b
 
Join Date: May 2004
Posts: 28
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
jroberts312 is an unknown quantity at this point
(Thread Starter)
ghead
My 318I started making a very loud sound coming from engine. Had my mechanic take a look and thought it was the alternator or tension roller. I had the tension roller replaced before and it was not half as loud as this. Here are the symptoms: When you accelerate it tends to go away. When you release the gas and just coast is when it gets really loud. Also, you can hear a loud hissing sound as if there is a vacuum leak of some sort. One last thing, when you cut off the engine, you hear one last squeal. This is after the rollers have stopped completely. It is also idling rough. I don't think it is a pulley or roller. Could this be the pcv valve (or crankcase vent valve)?
jroberts312 is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 07-02-2004, 10:52 AM
1st Gear Member
 
Join Date: Oct 2003
Posts: 107
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
PhunkDJti is an unknown quantity at this point
i had a very similar problem on my 318ti. the engine was loud as hell and idled extremely rough. my idle would fluctuate between 300-900k. my breather hose was shot with a big rip in it (connects at a corner at the top of the valve cover). which helped, but not completely. ..... then i replaced the pcv valve and presto - problem solved.

so in short, yes the pcv valve is possibly/probably the problem
PhunkDJti is offline  
#3 (permalink) Old 07-02-2004, 11:55 AM
5th Gear Member
 
Join Date: Mar 2004
Location: Richmond Hill, Ontario
Posts: 1,169
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Autotechnica is an unknown quantity at this point
Sounds like either the clutch fan bearing or the clutch fan belt. Check the tension on the belts and make sure there are no rips along the teeth. Also, make sure you use only original BMW V-Belts, aftermarket ones sometimes will make horrible noises. Do not spray anything like "belt dressing" onto the belts, it only makes it louder and more brittle. If you get water or oil onto the belts, it will also makes really loud noises until it dries up.

Bry

<u>1994 M-Technic M42 Saloon - Trillium Chapter - 5130</u>
Stock - 2866lbs Current - 2670lbs
<a href='http://www.geocities.com/mtechnik42' target='_blank'>- VIEW MY MODS AND PICS</a>
<a href='http://www.automobile-technik.com' target='_blank'>- PARTS FOR SALE</a>
--------------------------------------------------------------------------------
&lt;img src=&quot;http://www.maxbimmer.com/forums/atta...tc=1&quot;&gt;
Autotechnica is offline  
#4 (permalink) Old 07-05-2004, 09:15 AM
n00b
 
Join Date: May 2004
Posts: 28
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
jroberts312 is an unknown quantity at this point
(Thread Starter)

It did turn out to be the crankcase vent valve or pcv. When I removed the old one it had a piece fall out. It was completely broken internally. Put new one in and it fixed it fine. This part looks awfully cheap and brittle. After looking at my maintenance receipts, this is the second one replaced within two years. Damn part costs $50+ dollars. A lot of money for a cheap plastic part.
jroberts312 is offline  
Sponsored Links
Advertisement
 
Reply

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 3-Series (E36)


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome