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BossBob



Member Since: 30 Sep 2010
Location: Bristol
Posts: 1238

England 2007 Freelander 2 TD4 GS Manual Baltic Blue

Just to comment that the throttle butterfly really has only 2 positions, fully open and fully closed, and it’s only role is to close off intake air on shutdown to stop running on or an oil fed runaway.
If the throttle butterfly isn’t opening and closing correctly have you checked that the plastic drive gears that operate it are in good condition?

Post #429611 2nd Feb 2023 7:28 am
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Marcmcg



Member Since: 23 Jan 2022
Location: Essex
Posts: 29

United Kingdom 2008 Freelander 2 TD4 HSE Lux Auto Stornoway Grey

Hi thanks for the reply,

It appears to be opening and closing correctly by hand and by the electricinoic control. The diagnostic however shows it 83.53% no matter what I am doing I am seeing all the pedal sensors fluctuate when being pressed but not the sensor labelled throttle position. It won't move at all.

Does this help?


Last edited by Marcmcg on 2nd Feb 2023 10:46 am. Edited 1 time in total

Post #429613 2nd Feb 2023 9:12 am
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Marcmcg



Member Since: 23 Jan 2022
Location: Essex
Posts: 29

United Kingdom 2008 Freelander 2 TD4 HSE Lux Auto Stornoway Grey

However the car does rev and operate how I would expect barring lack of power.

Post #429614 2nd Feb 2023 9:13 am
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BossBob



Member Since: 30 Sep 2010
Location: Bristol
Posts: 1238

England 2007 Freelander 2 TD4 GS Manual Baltic Blue

The normal fault with the throttle valve is indicated by lots of clicking and a high pitched whine when you turn off the engine, sometimes the engine will not stop and run on lumpily for a few revolutions. This indicates that carbon (that you have already cleaned out) was/is restricting the movement of the valve causing the plastic teeth of the actuator to strip. The clicking and whining is the actuator moving back and forth trying to get the range sensors to report the valve as closed. The running on is an indicator that the valve is open and there is fuel available.
I don’t know that you should be able to move the butterfly by hand as the actuator should be controlling its position.
If the valve is open when the engine is running I’d be looking more at the low rail pressure or even the movement of the variable position vanes on the turbo.

Post #429626 2nd Feb 2023 12:50 pm
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Marcmcg



Member Since: 23 Jan 2022
Location: Essex
Posts: 29

United Kingdom 2008 Freelander 2 TD4 HSE Lux Auto Stornoway Grey

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Hi,

Put redex in today, took it for about a 30 minute to see what was happening, borrowed a hawkeye tester from a colleague.

It generated 2 new codes anyone have any new ideas



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Any help greatly appreciated

Post #429660 2nd Feb 2023 10:36 pm
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Marcmcg



Member Since: 23 Jan 2022
Location: Essex
Posts: 29

United Kingdom 2008 Freelander 2 TD4 HSE Lux Auto Stornoway Grey

Any Ideas?








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Post #429669 3rd Feb 2023 7:44 pm
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sid



Member Since: 16 Jul 2015
Location: devon
Posts: 476

England 2009 Freelander 2 TD4 HSE Manual Stornoway Grey

many a road side breakdown in my firm ,with low fuel pressure fault has been diagnosed as fuel pump or sensors,with the true fault being a blocked filter,new or not,the best wrong diagnoses was one i attended which was just very low on fuel pressure due to a clogged in tank filter(jap 4x4)

Post #429671 3rd Feb 2023 8:35 pm
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Marcmcg



Member Since: 23 Jan 2022
Location: Essex
Posts: 29

United Kingdom 2008 Freelander 2 TD4 HSE Lux Auto Stornoway Grey

Anyone have any other ideas I need to check before throwing in the towel?








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Post #429725 5th Feb 2023 12:21 pm
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IanMetro



Member Since: 11 Sep 2017
Location: Somerset BS21
Posts: 2747

United Kingdom 2014 Freelander 2 SD4 Metropolis LE Auto Fuji White

From the symptoms and codes, you seem to be suffering a lack of fuel or air input
- the book says

Description
P0087-00 Fuel Rail/System Pressure -Too Low - No sub type information

• NOTE: - Circuit I_A_RALPS -


Possible Cause
Fuel rail pressure sensor circuit short circuit to ground, short circuit to power, open circuit, high resistance

Fuel starvation

Fuel lines leaking

Fuel lines restricted

Blocked air filter


Action
Refer to the electrical circuit diagrams and check the fuel rail pressure sensor circuit for short circuit to ground,
short circuit to power, open circuit, high resistance

Check the fuel lines for any signs of leakage, replace as required

Check the fuel lines for any signs of damage, crimping or restrictions, replace as required

Check for blocked air filter, replace as required


PS I would add possible fuel contamination? or symptoms (not codes) could be variable turbo vanes???? FL2 XS SD4 Auto 2010 2012-2017 (21k - 91k miles) (MY2011)
FL2 Metropolis SD4 Auto 2014 2017- (16k - 74k+ miles) (MY2015)

Post #429729 5th Feb 2023 3:42 pm
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Marcmcg



Member Since: 23 Jan 2022
Location: Essex
Posts: 29

United Kingdom 2008 Freelander 2 TD4 HSE Lux Auto Stornoway Grey

Nice on thanks Ian I'll have another investigation tonight. Is it common for the fuel rail pressure sensor to die? Haven't checked air filter yet. Done fuel filter lines on the top side looked alright. She was just driving and then it had no power half a tank of fuel and then started acting up.

Thank You

Post #429776 6th Feb 2023 2:58 pm
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Marcmcg



Member Since: 23 Jan 2022
Location: Essex
Posts: 29

United Kingdom 2008 Freelander 2 TD4 HSE Lux Auto Stornoway Grey

Hi Ian,

Checked everything you listed. Couldn't find fault with anything. Could you send me a guide for the turbo vanes and what to check for?

Does anyone know what the fuel rail pressure values are supposed to be? I camt seem to find this data anywhere.

Thank You

Post #430352 21st Feb 2023 9:12 pm
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I Like Chips



Member Since: 25 Jun 2017
Location: Ascott Under Wychwood
Posts: 1418

United Kingdom 2011 Freelander 2 SD4 HSE Auto Indus Silver

A search on here shows this thread

https://www.freel2.com/forum/topic36883.ht...l+pressure

Post #430353 21st Feb 2023 9:43 pm
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Nodge68



Member Since: 15 Jul 2020
Location: Newquay
Posts: 1769

United Kingdom 2009 Freelander 2 TD4 SE Manual Rimini Red

Fuel pressure on most common rail engines is between 24,000kPa it idle, up to about 140,000kPa at full power.
My 2009MY SE would concur with that, showing 25,000kPa at idle and about 80,000kPa at 2500 RPM (I seldom need to go over 2.5k RPM). 2009 Rimini Red SE TD4. My daily driver.
Gone. 2006 Tonga Green i6 HSE.

Post #430356 22nd Feb 2023 5:52 am
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Marcmcg



Member Since: 23 Jan 2022
Location: Essex
Posts: 29

United Kingdom 2008 Freelander 2 TD4 HSE Lux Auto Stornoway Grey

I am getting around 25kkpa on idle upto 181kkpa when revving before the fault.

Today I changed the sensor as was getting repeated fuel pressure low and fuel pressure high concurrently at the same time.

Changed the sensor and I am only now getting fuel rail pressure high faults.

Anyone have any ideas getting desperate now.

Thank You

Post #430398 23rd Feb 2023 3:08 pm
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Marcmcg



Member Since: 23 Jan 2022
Location: Essex
Posts: 29

United Kingdom 2008 Freelander 2 TD4 HSE Lux Auto Stornoway Grey

Have replaced 2 rail pressure sensors and a fuel pressure regulator and still getting simultaneous fuel pressure signal low and high at the same time when revving over 3krpm and vehicle misfiring

Any thoughts?

Post #430580 1st Mar 2023 6:59 pm
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