SL/R230: Trouble Pressurizing ABC
Thread Starter
Member
Joined: Sep 2018
Posts: 115
Likes: 7
From: Dallas
2005 SL65 AMG, Motorcycle
Trouble Pressurizing ABC
Hi there I recently replace front and rear main accumulators on my car. I have a STAR computer. I get an error now saying pressure too low. It looks like Pentosin is able to leak from the ABC reservoir cap/return line/filter holder.
I am am trying to pressurize the reservoir through the dip stick hole but I think air keeps escaping through the reservoir cap. That cap has been opened and closed very tightly many times but air still seems to come through (and oil I’m sure when engine is on).
I am am at a loss here. Any suggestions?
Thanks
I am am trying to pressurize the reservoir through the dip stick hole but I think air keeps escaping through the reservoir cap. That cap has been opened and closed very tightly many times but air still seems to come through (and oil I’m sure when engine is on).
I am am at a loss here. Any suggestions?
Thanks
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Joined: Jan 2006
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From: Atlanta, unfortunately
'09 S600, (2) R129 300SLs, '03 SL500, '03 SL55
If you allowed the reservoir to run dry, then perhaps filling it and pressurizing would accomplish something. Otherwise, I presume you are wasting your time.
Intuitively, you should investigate the low pressure error. Obviously you should look at the pressure at idle. You might also observe it during a Rodeo, and you might also observe it building from zero once the engine has started. It's possible your pressure is fine and you simply have a sluggish pressure sensor...
Intuitively, you should investigate the low pressure error. Obviously you should look at the pressure at idle. You might also observe it during a Rodeo, and you might also observe it building from zero once the engine has started. It's possible your pressure is fine and you simply have a sluggish pressure sensor...
Thread Starter
Member
Joined: Sep 2018
Posts: 115
Likes: 7
From: Dallas
2005 SL65 AMG, Motorcycle
Thanks for the reply. I did not mention the whole car was sagging very low.
I did a rodeo rodeo earlier with 0-1 bar. Pump was always good never sagging ever just air in system (because replaced accumulators) so I had trouble getting back to where I was before.
I replaced filter, tightened the return line cap. Reservoir has always been topped off to proper levels. I read somewhere online about completing CPR on the return line squeezing it and pressurizing the reservoir tank.
I squeezed return line probably 75 times and it got tougher to squeeze with car on (air trapped in there?).
I did another rodeo just now I had ~190 bar before and ~120 bar during.
It think air is purged from pump now car sits level and appropriate. I’ll do another rodeo, top off fluid and keep my fingers crossed.
I did a rodeo rodeo earlier with 0-1 bar. Pump was always good never sagging ever just air in system (because replaced accumulators) so I had trouble getting back to where I was before.
I replaced filter, tightened the return line cap. Reservoir has always been topped off to proper levels. I read somewhere online about completing CPR on the return line squeezing it and pressurizing the reservoir tank.
I squeezed return line probably 75 times and it got tougher to squeeze with car on (air trapped in there?).
I did another rodeo just now I had ~190 bar before and ~120 bar during.
It think air is purged from pump now car sits level and appropriate. I’ll do another rodeo, top off fluid and keep my fingers crossed.
