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2001 E320: Sedan..comes back..steering column..power steering pump

 
Michael Warfield's Avatar
  • Answered by:Michael Warfield
  • Factory Mercedes-Benz Technician
  • Positive Feedback: 97.6 %
  • Accepted Answers: 2240
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Customer Question

I have a 2001 E320 Base Sedan, with just over 100K miles. After driving for some time (it varies each instance, but is consistent in occurring), a steering "tightness" and vibration occurs and continues for the remainder of the driving that day. The next day, when the car is cold again, the vibration and tightness disappears but comes back later in the day when driving.

I have had the steering column greased, the boot refilled, and the power steering pump reviewed, without issue. There has been a "sound" found in the steering crossbar (dont know the part name) when the car is raised and the steering when turned.

The issue does not get worse, nor disappear completely. Steering is not affected other than the vibration and tightness that occurs.

Any ideas?

 

Country: United States
Make: Mercedes-Benz
Model: E320
Year: 2001

Already Tried:
mechanic reviews

Submitted: 356 days and 10 hours ago.
Category: Mercedes
Value: $20
Status: CLOSED

Accepted Answer

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Expert:  Michael Warfield replied 356 days and 9 hours ago.


Michael Warfield :

These models are prone to steering rack problems

Michael Warfield :

They usually cause a squeek noise when turning that is often misdiagnosed as a squeeky steering column firewall boot. Those squeek too but the steering racks have problems as well.

Michael Warfield :

The problem is either the power steering pump or the steering rack since that is pretty much the whole system. If you don't get a groan noise during the vibration than I doubt you have a pump problem. The power steering pump output pressure can be tested with a gauge. Just compare to cold pressure to hot pressure, they should be the same. If the pressure is ok, then it is your power steering rack. The control head is rebuildable but I wouldn't try it since you have a vibration problem which the control head rebuild won't fix.

Customer :

so you're suggesting i have to replace the rack? is there an inexpensive way to do that?

Michael Warfield :

Get a junkyard rack

Michael Warfield :

Or "salvage yard" rack

Michael Warfield :

to put a little nicer

Michael Warfield :

to put it* a little nicer

Michael Warfield :

They do sell remanufactured ones from the dealership but they are still expensive

Michael Warfield :

Let me see if I can locate a cheaper one for you.

Customer :

ok thank you.if the symptoms do not change in severity or occurrance, what is actually occuring in the rack that would cause this to happen under certain circumstances but not all the time?

Michael Warfield :

I usually see the racks start acting up the warmer they get for some reason. It must be the tolerances inside that change since obviously when metal heats up it expands.

Customer :

ok. thank you. i would be interested in finding the least expensive part option.

Michael Warfield :

can you post your vin#?

Customer :

give me a few minutes please

Michael Warfield :

ok

Customer :

WDBJF65J11B261102

Michael Warfield :

http://catalog.peachparts.com/ShopByVehicle.epc?q=20 01-Mercedes--Benz-E320--Base--Sedan-Steering&yearid=2001%40%402001&makeid=63%40%40MERCEDES%20BENZ%40%40X&modelid=6389%3ABT%7C5%3AED%7C210%3ASM%7C20%3AMBC%7C1576%40%40E320%20Base%20Sedan&catid=241580%40%40Steering&subcatid=241582@@Steering%20Rack&mode=PD

Michael Warfield :

There are 2 different racks available for your car. Use the one from B040000 since your car is B261102. The only thing you need to ask a mechanic is whether or not is \

Michael Warfield :

whether or not you have the parameter steering

Customer :

thank you. have you found these parts to be reliable? worth the money?

Michael Warfield :

I think you have the electronic valve on yours but you will have to have look to see if there is an electrical valve on your rack

Michael Warfield :

I can't say that I have ever used peachparts.com but I know they have a good reputation

Michael Warfield :

I work for the dealership and usually only recommend the factory remanufactured ones

Michael Warfield :

but they are $1200 or more so kind of ridiculous

Customer :

agreed. i just looked and they only have the rack with parameter steering in stock. any other suppliers jic?

Michael Warfield :

This one is $380

Michael Warfield :

You could use www.rockauto.com

Michael Warfield :

http://www.rockauto.com/catalog/raframecatalog.php

Customer :

ok thank you again

Michael Warfield :

Your welcome, if I have been helpful please click accept, thank you.

Customer :

one last question...looking at rockauto, is it the rack and pinion complete kit i'm looking for? with servotronic steering?

Expert TypeFactory Mercedes-Benz Technician
Category: Mercedes
Pos. Feedback: 97.6 %
Accepts: 2240
Answered: 4/20/2012

Experience: Mercedes-Benz Master Certified technician

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