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Fuel/Stalling Issue. PLEASE HELP!!!

LPCL500

New Member
Joined
Sep 20, 2022
Messages
1
Location
Leeds
Car
CL500
My Car is the UK Version 2014 CL500 - C216 - 4.7 Blue Efficiency
Previously the car was running perfectly before the following happened: I drove on to a drive and because one of the drive concrete slabs were sticking up/protruding it caught the bottom of the fuel line & unloosened the fuel pipe & hose Clamp, then following this one day it completely unloosened & the car would not start due to the fuel pipe & hose disconnected & fuel pouring out of them every time ignition was turned over. Got the pipe & hose fixed with a new clamp by mechanic and car then started okay. Until I took out on road and stalled or just cuts out after a short time. Engine Management light comes on. Eventually restarts & then cuts out again after 10 mins. At idle speed it usually ticks over ok without stalling. I'm really puzzled with this as the car was running perfectly until the clamp was knocked & eventually hose & pipe came loose. I receive the P0087 code relating to fuel pressure low in the system, but the hose & pipe fixed and no previous issues before, Why? I was told that it could be the Fuel Pressure sensor, High Pressure Fuel Pump or Filter. I've replaced the Sensor, still the same. But why would these suddenly be faulty when they were running perfectly before as there was no real fault? Any help/explanation/advice in this would be much appreciated as been driving me absolutely mad, really baffling as well & don't want to be buying expensive parts that are not needed? Thanks.
 
Firstly I'm really surprised the fuel line is so positioned it could be hit by a "protruding slab".
Secondly to "unloosen" is to tighten!
Was the car scanned using STAR or a generic reader? Was it a general garage or Merc specialist?
Was the fuel line completely bled of air once repaired?
 
Firstly I'm really surprised the fuel line is so positioned it could be hit by a "protruding slab".
Secondly to "unloosen" is to tighten!
Was the car scanned using STAR or a generic reader? Was it a general garage or Merc specialist?
Was the fuel line completely bled of air once repaired?
I'm wondering if this is the same problem I've had for a few years with my e200 blue efficiency.

It started after I ran the car into a soft depression in the ground and had to be towed out, which must have caused the front underside to scrape the lip off the depression.

Since then, about 4 or 5 times a year, the car after running normally will, after a short stop (eg shopping), the car fails to start but stalls. Also, the kick down is inoperable (car goes into limp mode).

Mercedes Bristol has just changed the low pressure rear sensor (in the fuel tank) but the problem persists..

I'm convinced it's something to do with the original "scraping" but after several visits to the Mercedes garage they are unable to identify the problem.

Any thoughts greatly appreciated
Nick
 

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