Land rover freelander td4 problem power

badMechanic · Jun 9, 2019

Hello,i have problem with td4,loose of power at 2500rpm,and engine going off.......error code p0190...... i have change maf,fuel pressure sensor on rail,fuel sensor on pump,low pump,fuel filter,boost valve,repair turbo,check injectors,check wiring on engine to ecu,change crank and cam shaft sensor..... low pump on live data is 370 to 350,hp pump from 26000 to 115000 on full gas,fuel sensor on rail 0.7 do 1.4v.......... engine start normal,full throttle on idle no problem......

weemac · Jun 10, 2019

Eh up.

That code is telling you that the fuel rail pressure sensor is 'outside of range'.
You say you have changed the sensor but did you check the plug terminals for corrosion?
Could just be that the connectors are dirty and oxidised 'green' or a wire is broken on the loom.
Mine failed because a wire snapped after being trapped between the manifold and block.
Have you a checked the fuel filter? Blockage could be a problem.

While you're into changing bits, might as well check the MAP sensor.
It's on't left hand side of the air manifold. Make sure the hole isn't all caked up with black sh**e.

Best of luck.

badMechanic · Jun 10, 2019

tnx for answer

i just chek wiring to the rail pressure sensor,its ok,and voltage its ok..... map sensor change before 5 min

old map he was not with black sh..... and reading in live data was on idle 100.2kpa,on 3000rpm 106kpa....... i just lift car and i saw ground on fuel filter is unplug,and he have two filters,one black and one normal,wich i change when i change low pump....... maybe new filter is failure? maybe intelcooler have leak air? im stuck in the mud

weemac · Jun 11, 2019

Hmmm...
Double check what work you have done. Particularly around the LP pump and fuel filter.
Also check turbo vent filter is clean and double check the turbo vent solenoid vacuum pipes are connected the right way round

Has reconnecting that earth had any effect?
Was the motor running poorly before all this work?
Did you change the LP pump out for a reason? If you still have the old one, perhaps fit again and run tests.

Have a very close read through this thread as it has been covered so many times on the forum;
https://www.landyzone.co.uk/land-rover/td4-lack-of-power-at-70mph-fixed.77147/

Hippo · Jun 13, 2019

Welcome to the forum

badMechanic · Jun 16, 2019

i check everything again,all is ok but one thing isnt..... boost air sensor,on live data say 0.0mv and boost air temperature say 280F..... when i take plug out,nothing is change,still say 280F...... i check for 7x wiring to ecu and all is ok...... ecu fail maybe

RangeRoller dt · Jun 18, 2019

Manifold Absolute Pressure (MAP) sensor may be jammed/fooked or it’s pipes/wiring. Turbo won’t spool properly.

Welcome to LandyZone

badMechanic · Jun 18, 2019

Map sensor on idle read 100,on 2200rpm say abouth 114.... I put new map sensor, also wiring check..... I just drive car, high pressure goes to 81000 and engine go to limp mode... On another diagnostic was 115000 when limp mode come....

RangeRoller dt · Jun 18, 2019

Okay
Make a thread here
https://www.landyzone.co.uk/forum/land-rover-freelander.9/

You will need to explain to them but they will know
Good luck

Land rover freelander td4 problem power

p0190

no turbo

no fun

badMechanic

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weemac

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badMechanic

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weemac

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Hippo

Lord Hippo

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RangeRoller dt

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