Member Since: 20 Jun 2013
Location: Greece
Posts: 33
hi
we will handle to oil temp sensor today.
I read that the HP fuel pump is controllable, can you tell what "tells" the pump the correct pressure?
ie what are the inputs for it?
(from LR papers: Pressure is controllable, to the optimum level for smooth operation, up to 1650 bar)
also, is the a test procedure to the HP pump and feeding pump we can follow?
thx
13th Aug 2014 9:50 am
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
The HP output targets and regulates volume rather than pressure although clearly they are closely linked. The pump should produce 1600bar by 1500 rpm. Beyond this rpm the excess pressure is dumped and returned.
The volume is controlled by the ECM via a solenoid controlled valve. If the connector is removed or there is a open circuit the valve will close and stop the engine from running. I'm not sure how easy the connector is to back-probe given the access in that area.
Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 20 Jun 2013
Location: Greece
Posts: 33
all conectors are fitted as it should.
readings we get while cranking:
Fuel rail pressure: 384Kpa (is it 3840Kpa and MSV-2 is dropping a 0?)
Pressure control valve: 29.2%
Volume control valve: 39.7%
13th Aug 2014 12:17 pm
skid57
Member Since: 06 Apr 2014
Location: Hampshire
Posts: 9
Hi G class. Did you ever get your problem sorted? I am having the same trouble and it's driving me insane!! I am sure it's electrical as it all started when I had the car valetted for my wedding!!!!
20th Mar 2015 10:00 pm
gclass
Member Since: 20 Jun 2013
Location: Greece
Posts: 33
@skid57 - we replaced the injectors and that solved the problems.
21st Mar 2015 7:00 am
barendjoubert
Member Since: 02 Nov 2015
Location: Pretoria
Posts: 9
Hi skid57
Hi, I have an exact same problem with my car cutting out (some relays switch on and off a couple of times after switching on the engine, then remain off) and the same fault codes. Did you find a cure?
2nd Nov 2015 2:45 pm
skid57
Member Since: 06 Apr 2014
Location: Hampshire
Posts: 9
Hi. I took it to many "specialists" but in the end went to main dealership!
I pleaded poverty and to be honest they were fantastic. They flashed the ecu and job done! £155 later picked up the car and no problems since. Only thing was I lost my remap which my mate put back 2 days later. Hope this helps!
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