Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 09-09-2002, 10:15 PM
Registered User
 
Join Date: Sep 2001
Location: Austin, Tx
Posts: 713
Squeking noise from underhood, please help!

Hey everyone, earlier today I noticed a squeking noise coming from under the hood. It is one of those rather loud obnoxiosly piercing sounds that you hear from old cars ocasionaly. I have narrowed it down to somewhere along the fanbelt route. I think it might be the belt itself getting lose, but im not sure how to tell. Anyone have any tips on how to check if it is the belt? And, how involved is the replacement process for the belt? Thanks.
Reply With Quote
  #2  
Old 09-09-2002, 10:49 PM
Registered User
 
Join Date: May 2001
Posts: 161
Water Pump should be checked

My 87 300E (103 motor) made a squeeking sraping noise as my water pump was going out.

To check WP, grasp the WP pulley firmly with both hands and with about 20-30 lbs force push and pull up and down. If there is any slack felt (more than a very few thousands) or any noise with the slack you probably have a WP bearing going out. The other symptom mine had was occasional water leakage overnight. A small 4-6 inch puddle of water on the garage floor. Soon both the noise increased and the water leaked more.

If yours is replaced; you should also check the serp. belt, the belt tensioner, the tensioner shock and the bushing in the shock. There are a lot of posts on DIY , use a search if you plan to do it yourself. If there is any slack in the tens. shock or the bushing in the shock it will soon break your belt tensioner, (read $$$), so that would create a re-do of most of the labor cost in the WP replacement. Better to do it right than twice, $$$$

Partsshop here has the parts right priced..
but check with your shop to see if they will install your parts purchased here.

Go DIY if you can............Its a little difficult but do-able ........and you have to have some flex sockets and extensions. Read the posts here. Good luck, DanielW
Reply With Quote
  #3  
Old 09-10-2002, 08:14 AM
Registered User
 
Join Date: Sep 2001
Location: Austin, Tx
Posts: 713
hrmm... I forgot to mention something before. When I turn my car on, well, ive only noticed then when I leave school, so at 4 in the evening after the car is sitting for a good 7 hours, when I turn the car on I can hear a rubbing noise coming from the engine. It is not continuous, but turns off and on about twice a second. After a few seconds, it goes away.... does this further point to the waterpump?
Reply With Quote
  #4  
Old 09-10-2002, 08:28 AM
Fimum Fit
Guest
 
Posts: n/a
I think that you'd better do a search about

harmonic balancer problems -- the archives have some useful information, just in case you have that peculiar problem.
Reply With Quote
  #5  
Old 09-10-2002, 08:03 PM
Registered User
 
Join Date: Sep 2001
Location: Austin, Tx
Posts: 713
thankyou very much, I will read up on the waterpump and harmonic balancer and see if I can't get this thing straightened out!
Reply With Quote
  #6  
Old 09-10-2002, 09:09 PM
1992300e
Guest
 
Posts: n/a
sqeeling

I have found that water pumps do tend to make the noise you are describing as the bearings and seal crap out.

Check for water leaks at the pump and the wiggle the water pump pulley works. You wiggle to feel for play in the shaft that comes out of the water pump and the pulley is bolted to, any play (wiggle) and the pump will need attention.

Joel
Reply With Quote
  #7  
Old 09-10-2002, 09:17 PM
Registered User
 
Join Date: Sep 2001
Location: Austin, Tx
Posts: 713
Hey everyone. It seems as if the squeking has stopped. It happened yesterday while the car was parked on the driveway (rather steep), perhaps it was only a fluke. If it comes back, I will look at the water pump, but, worst case scenario, if the pump dies, what would happen? Would I have some time to shut down the car before all kinds of damage gets done? Thanks!
Reply With Quote
  #8  
Old 09-10-2002, 09:23 PM
1992300e
Guest
 
Posts: n/a
dead water pump

Not a good thing to happen but not worst.

I've had them crap out and water and steam everywhere. I've been told that coolant can actually burn. If that's the case problem could be grave.

Also, if it crapps out and you don't notice (for what ever reason there is not steam) your temp gage climbing, you know the obvious answer there. Engines goes from hummmmm to clunk-stop. Saw a guy seize a taurus, not a pretty thing.

His wife was driving and when I asked her did she notice the temp rise she said yes but the car was running ok so she figured it was no big deal.

I never saw coolant boil like that, scary sight, but not too scary because it was not my car.

Joel
Reply With Quote
  #9  
Old 09-10-2002, 11:50 PM
Registered User
 
Join Date: Sep 2001
Location: Austin, Tx
Posts: 713
hrrmm alright. As long as I get some warning before (temp guage rising) I can live with it. Thanks!
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 10:30 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page