Freelander 1 td4

M

Matt BB

Member

Posts

86

Location

North Devon

• Dec 16, 2021

• #1

Hi guys, my gf freelander has developed a problem. It seams to me as is driving but with no boost. That’s how I’d describe it. Starts a drives fine no smoke but incredibly slow.

I’ve ran the codes and nothing stored but one code did come up (well not a code) but “low side fuel pressure sensor plausibility”

any help would be good?

matt

 

Nodge68

Well-Known Member

Posts

32,750

Location

Cornwall

• Dec 16, 2021

• #2

Ideally you need to run a live data routine.
You're looking for very low pressure on the low pressure fuel rail.
The correct figure for maximum power is over 350kpa at full power output.
If the figure drops below 300kpa, then engine power will reduce massively.

 

M

Matt BB

Member

Posts

86

Location

North Devon

• Dec 16, 2021

• #3

Just noticed the lift pump isn’t operating when ignition is turned? Absolutely nothing coming from the wheel arch at all. Could this cause it?

 

andyfreelandy

Well-Known Member

Posts

5,533

Location

Devon

• Dec 16, 2021

• #4

Yes, no fuel pump, no fuel!
Check the supply voltage.

Sounds like the pump motor has failed, sometimes a smart tap will restore it for a short while!!

 

andyfreelandy

Well-Known Member

Posts

5,533

Location

Devon

• Dec 16, 2021

• #5

I see you are local to me. If you need live data read just ask!

 

M

Matt BB

Member

Posts

86

Location

North Devon

• Dec 16, 2021

• #6

Hi Andy that’s very kind Thankyou.

it’s not starting at all now, and no lift pump noise. Is it possible (as it was driving earlier) that the hp pump was running the car with no lift pump?

 

Nodge68

Well-Known Member

Posts

32,750

Location

Cornwall

• Dec 16, 2021

• #7

Matt BB said:

Is it possible (as it was driving earlier) that the hp pump was running the car with no lift pump?

Click to expand...

Unlikely, as the ECM cuts the injection if the low pressure rail drops below 250kpa, to avoid damage to the HP pump.

 

andyfreelandy

Well-Known Member

Posts

5,533

Location

Devon

• Dec 16, 2021

• #8

Try a smart tap on the pump. The brushes wear and the motor sticks. I managed to get home once with a few sharp smacks!!

It will then confirm you need a new pump.

 

M

Matt BB

Member

Posts

86

Location

North Devon

• Dec 16, 2021

• #9

Will do tomorrow, weird how it’s gone from driving but extremely slow to now no start at all

 

Arctic2

Well-Known Member

Posts

2,710

Location

Westmidlands

• Dec 17, 2021

• #10

How did you get on using the method from Andy, if it turns out to be the fuel pump best to purchase a pierburg original pump as after market ones fail quite quickly.

 

M

Matt BB

Member

Posts

86

Location

North Devon

• Jan 9, 2022

• #11

Hi guys, just checking in. I replaced lift pump as I could hear it wasn’t working and it has fixed the problem. Amazingly it must of ran on just the hp pump for a short while.