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E34 (1989 - 1995)

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  #1  
Old 08-29-2013, 05:09 AM
Greenhornet540i Greenhornet540i is offline
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Location: Connecticut
 
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Mein Auto: 540i 1995
Front end clunking noise

I drive a 1995 540i with 185k miles. It has new motor mounts, struts and front brakes installed. I am trying to troubleshoot a loud clunking coming from the passenger side front end. It seems there is metal to metal contact when I go over certain types of road bumps. The front seems to be bottoming out.
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  #2  
Old 08-29-2013, 05:38 AM
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BMR_LVR BMR_LVR is offline
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Location: Asheboro, NC
 
Join Date: Dec 2008
Posts: 5,264
Mein Auto: 1992 525i
Welcome to the Fest!

I'm 99.999% sure your thrust arms are shot.

Have a friend walk along the car beside the passenger front wheel as you creep along at about 3-7 mph. Stab the brakes and have your friend observe if the wheel jerks backwards in the wheel well. It probably will. If so, this confirms that the thrust arms are poo.

At that mileage, it is recommended to rebuild the entire front suspension. It can be done if you are a decent DIY kind of guy.

If you plan to do the work yourself, you should obtain a copy of the Bentley manual. It covers how to do the work. I recommend only Lemforder or Meyle parts. The cheap stuff will not last long. Plan on ~ $800-$1000 for parts. One thing that is key is that the bolts for the thrust arms and control arms must be torqued while the car is loaded. Again, the Bentley manual covers this.

Also there are some good YouTube videos of people replacing some of the stuff.

Good luck.
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Quote:
Originally Posted by noego View Post
It's Deja Poo - as in, I've heard this **** before.
Steve

Calypso Red 1992 525i with 200K miles

1991 735i - Sold
1992 525i - Sold
1995 325is - Sold
2000 528i - Sold

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  #3  
Old 08-29-2013, 07:07 AM
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Monsignor Monsignor is offline
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Location: Pineapple Under the Sea
 
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Another possibility is your sway bar endlinks. inexpensive and easy to change. My car had a clunk for a while, took me forever trying to figure it out.
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1995 525iA 250k mi
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  #4  
Old 08-29-2013, 09:20 AM
Greenhornet540i Greenhornet540i is offline
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Location: Connecticut
 
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Mein Auto: 540i 1995
Thanks

Good to be part of the 'fest...
Thanks for the quick replies.
I'll be getting greasy soon as this problem has been with me for over a year - and scares anyone that is in the passenger seat. (The local mechanic has gone over the front end a bit but has come up empty.)
I'll advise once I get into the project.

Thanks Greenhornet540i (Steve S.)
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  #5  
Old 08-29-2013, 09:24 AM
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Monsignor Monsignor is offline
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if youve had it for a year and dont have any issues with shaking at speed or through braking then i'm sure its your endlink.
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1995 525iA 250k mi
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  #6  
Old 08-29-2013, 09:35 AM
Greenhornet540i Greenhornet540i is offline
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Location: Connecticut
 
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Mein Auto: 540i 1995
roger that !
No problem at speed or braking (hard or soft)
The steering is loose but that is a steering box adjustment I believe.
Got the car w/136K miles about 4 years ago and use it as my every day driver.
It just runs so I have been weighing the options of whether to repair the front end or replace the car..... my Bimmer buddies on the Left Coast would not let me live down a replacement by another brand.....
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  #7  
Old 08-29-2013, 09:56 AM
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Monsignor Monsignor is offline
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if you decide to switch it up, i'll gladly give it home.
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1995 525iA 250k mi
2003 350Z 88k mi
2014 F-150 0k mi

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  #8  
Old 09-02-2013, 09:22 AM
Greenhornet540i Greenhornet540i is offline
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Location: Connecticut
 
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Mein Auto: 540i 1995
Clunk Clunk

Looks like the thrust arms are the culprit - after returning from Lime Rock (car show yesterday) my friend acted as an observer and verified wheel movement.
THANKS for the advice! Tomorrow, on the horn to the parts vendor - 002 BMW Parts - to discuss how many and what... Have a nice holiday guys.
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  #9  
Old 09-03-2013, 03:04 PM
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BMWFatherFigure BMWFatherFigure is offline
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Location: Perth, Western Australia
 
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Mein Auto: E23;E30;E38;E32;E34 +
When you adjust the streering box do it with the wheels off the ground and a real gentle touch.
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  #10  
Old 09-03-2013, 03:08 PM
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Monsignor Monsignor is offline
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Loud scary clunking front end sound with no wheel shake is a thrust arm?
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1995 525iA 250k mi
2003 350Z 88k mi
2014 F-150 0k mi

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  #11  
Old 09-05-2013, 08:35 AM
Greenhornet540i Greenhornet540i is offline
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Front end rebuild parts now on order - should be in house next week - rebuild to start 9-19 - we'll see what falls apart as its being removed. Gotta do an engine compartment and under carriage Gunk and power wash as there is a leaky pwr steering reservoir hose weeping its goo around.

If this project is successful, perhaps ill consider installing larger dia. tires and wheels.
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  #12  
Old 09-05-2013, 08:47 AM
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Monsignor Monsignor is offline
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Location: Pineapple Under the Sea
 
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I'd tackle those power steering lines sooner rather than later.

Not too bad on 6cylinder cars, kind of a larger PITA on your 8bangers.
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1995 525iA 250k mi
2003 350Z 88k mi
2014 F-150 0k mi

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  #13  
Old 09-05-2013, 10:27 AM
Greenhornet540i Greenhornet540i is offline
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Location: Connecticut
 
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Thanks for the heads up on the hoses - got the part here - just need to get in there and get "greasy"...
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  #14  
Old 09-05-2013, 11:32 AM
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Monsignor Monsignor is offline
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Location: Pineapple Under the Sea
 
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Quote:
Originally Posted by Greenhornet540i View Post
Thanks for the heads up on the hoses - got the part here - just need to get in there and get "greasy"...
and greasy you shall be...
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1995 525iA 250k mi
2003 350Z 88k mi
2014 F-150 0k mi

Instagram: @Titan_E34
Snapchat: Titan_E34
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  #15  
Old 09-09-2013, 12:25 PM
Greenhornet540i Greenhornet540i is offline
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Another day, a new problem to solve - to those in the know.....
I am experiencing a sticking throttle - here are the details: started about 9 months ago when I was in cruise control and started at 65MPH however after a few hills, was going 90+MPH.
A quick look under the hood showed a cracked and corroded cruise actuator cable - so I squirted a little WD40 and the problem went away for a few months. It came back again and some more lubricant and ordered new cruise and throttle cables. Just got around to installing them and went for a road trip to Philadelphia. Well, I was fighting to keep the car from going Mach II speeds as the throttle was intermittently sticking again. Now back home and some more under the hood inspection. It looks like the cables are free from sticking and the spring assembly is working OK. I took off the rubber intake hose (between Mass flow sensor and intake) and took a look at the throttle plate - all seemed to operate OK. I did notice that there is a throttle position sensor (on the opposite end of the throttle plate shaft) and that may be the culprit. I did remove and reattach the electrical plug on this sensor but could not remove it as the screws seemed to be frozen in place. I will squirt a bit of penetrating oil and try to remove again.

In the mean time, any comments?

Thanks,
Steve
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  #16  
Old 09-09-2013, 03:15 PM
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E34ZombieHunter E34ZombieHunter is online now
Nothin like an E34
Location: Lillington NC
 
Join Date: Feb 2013
Posts: 2,919
Mein Auto: 95 540i B/B
I had the same issue some lube and driving the $#!^ out of my new car got it freed up. Just need to work in in really well, mine stuck more toward higher throttle i guess because most people don't get into it much. It worked out during MY break in period. I would make sure there is no carbon build up in the throttle helping it stick.
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