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Discussion Starter #1
Hey M5board,

I've been lurking the forums for a while now but I can't seem to find good direct answers to my problems.

For background, I own a 02/1993 E34 Jet Black M5 which I bought from a fellow board member here, with this being my second M5 after my 00' TiAg E39 M5. The car has about 260k miles and was in the process of being restored when I bought it. Being a high mileage car on the recirculating ball steering system, there was a lot of slack in the drivers wheel and it had that 'ghost wandering' feeling from the steering. I lived with it for a couple months until one night I decided I wanted to be a dick and show off my dope *** car to a full cabin of apathetic peasants who I call my friends. I was weaving through these California slopes until I started getting these weird noises in the engine and noticed a lot of smoking in the cabin of the car. I pulled over at a stop and saw that one of my power steering lines had busted and basically exploded PS fluid all over the engine bay. Since then, I've decided I wanted to do a SLS delete (because of the compromised connections between the PS pump and the suspension). I've even bought a complete coilover kit from Ground Control. I don't want to have to deal with all the maintenance!

ANYHOW, after months of waiting for parts and slacking around I wasn't aware that the power steering box that my M5 came with was equipped with Servotronic technology. The steering box that I bought is a non-servotronic and I'm wondering (if I were to install the non-servotronic steering box) how will this affect my ride quality and if it will give the car a error code when it realizes its missing the servotronic component?

ADDITIONALLY, I've removed my power steering pump with the intent of plugging up one of the holes to delete the self leveling suspension system. But the truth is I have no idea which hole I'm supposed to be plugging up and what other additional steps I need to do to this delete properly and without flags/error codes.

I'm not very mechanically inclined at all and I'm a total newbie when it comes to automotive repair. And any help or advice would be very appreciated, thanks!

TOO LONG DIDNT READ? --- Non-servotronic on a Servotronic M5 ride quality/ problems? Whats the best way to perform the SLS delete?!
 

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If you are "not very mechanically inclined at all", you really should not attempt any of this, sorry.


You do not plug the SLS ports of the pump; you loop them.


Your steering box has an adjustment screw. There are most likely other components involved in your wandering/steering looseness. Don't even think about replacing the steering box until you've replaced all the front end parts which are the usual culprits for steering slop. These will include the tie rods, center link, idler arm, and 4 control arms.


If the looseness remains, (unlikely) and you still want to have your steering box replaced, buy the correct part.


I highly recommend that you find a BMW specialist shop, and let them do your repairs and modifications, because mistakes on this car will be VERY expensive.
 

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You can "plug" them by insterting appropriate sized metric bolts into the pressurized sls line port andthe feed from the ps reservoir. Then remove the two pistons under the x-head hydraulic plugs on the front of the ps pump. I started a thread a month or so ago about removing the sls at the pump, in addition to other threads on the topic.


I agree Chris, if not mechanically inclined, you are going to have a real bad time with any of this.
 

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Discussion Starter #4
Your steering box has an adjustment screw. There are most likely other components involved in your wandering/steering looseness. Don't even think about replacing the steering box until you've replaced all the front end parts which are the usual culprits for steering slop. These will include the tie rods, center link, idler arm, and 4 control arms.


If the looseness remains, (unlikely) and you still want to have your steering box replaced, buy the correct part.
Really appreciate the reply!

All front arms and bushings have been replaced prior because the previous owner also noticed the major slack in the steering wheel so that really does leave the steering box as the culprit.

Unfortunately now the steering box seller (buyautoparts.com) does not have the Servotronic Steering box in stock so I'll have to work with the non-servotronic box. I'll be keeping the OEM servotronic one in hopes that maybe i can find a shop to refurbish it and I'll be taking a hit on the core charge.

Thanks again!
 

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I looked at the BuyAutoParts one too. It's $850 on eBay and $860 on their website. +$350 core charge on eBay and $125 if you buy through their website. I ended up sending my rack to https://benchworksteering.com/ who will rebuild for $450, but have no cores to trade. I'm sure they could rebuild a Servotronic one for a similar price.
 
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