My 2007 i6 has sometimes slowly starts with the rev counter not moving, it will sometimes
start after about 30 seconds and run fine, sometimes it wont start and i have to try again.
Today while driving the engine light started flashing and the engine ran rough then settled only to do it again,
Checked the codes which read :-
P0300 Random/Multiple Cylinder misfire detected.
P0304 Cylinder 4 misfire
P0305 Cylinder 5 misfire
P0306 Cylinder 6 misfire
I cleared them and went for a drive, engine light came straight back on and the engine ran rough, if i put the gearbox into sport mode and changed down a gear it ran smooth again.
Don't think its fuel as it is the same if on petrol or lpg, strange for 3 plugs or coils to go at the same time.
Any ideas please? Common sense isn't very common.
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2007 Land Rover Freelander2 I6 hse Auto

Last edited by axle on 18th Aug 2023 4:39 pm. Edited 1 time in total

My 2 previous cars during their respective lives, each 18 & 25 years old, had misfiring on 1 cylinder of 4, can't imagine 3 cylinders of 6, one was bad enough. Replaced the leads & upgraded to better quality while at it, which solved the problem.

Also had new spark plugs put in while at it, but they were definitely not the problem. Procrastination, mankind's greatest labour saving device!

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I'm not sure of the I6 control layout, and I've sold mine now so can't look. It's obviously an issue effecting adjacent cylinders, so I'd be checking everything that is common to those 3. It's unlikely to be the plugs, as 3 failing at the same time is unlikely. Maybe something to do with the variable value timing? which is just a guess. I'm assuming it's not a broken wire, as the ECM would be reporting open or short circuit codes too. Misfiring codes alone suggests the ECM doesn't know the issue, just that misfires are taking place. Hyundai Ioniq 5 Ultimate. The family car.
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Axel,

The PCV is know to fail and when it does it will allow oil into the intake.

Because of the routing of the PCV Gases and Oil it will affect Cylinder 6 first then 5, 4, 3, 2, 1 in that order.


I would start with a new PCV and make sure that you get a quality part marked with FOMOCO.

Over here we can get one for about $100.

If you have to go to LAND ROVER I would expect to pay double





For my S80 with the same 3.2 I replace the PCV about 6 months ago and it has been fine since.
The Volvo 3.2 is almost the same except it actually has redesign low friction piston rings and consequently it burns oil.
For the Volvo the combined Oil from the Piston Rings and the PCV caused Misfire.


If you have replaced the PCV already then the next place to look is the wiring for the ignition coils.

Cylinder 2, 4 and 6 share a ground. (1, 3, and 5 share a separate ground)

Measure the Voltage drop from the wire to the Battery Negative Post (B-)

With the Engine running it should be about 0.050 Volts. If it is several volts then you have a ground problem.


Good Luck

Paul

Last edited by p_gill on 9th Aug 2023 6:02 pm. Edited 1 time in total

A link for measuring the Voltage Drop for the Coil ground

https://www.matthewsvolvosite.com/forums/viewtopic.php?t=98362

Take care

Paul

Thanks Paul, i would go with the PCV, the earth would have to gone on both grounds to effect 4,5 and 6. Common sense isn't very common.
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2007 Land Rover Freelander2 I6 hse Auto

Look through the description of engine controls in the manual, some of the sensors are bank-specific.

Look at the wiring diagram to see what's common with fuel injectors.

Also... the engine has two separate exhaust manifolds with separate cats and O2 sensors, and those are split 123 and 456. Maybe a clogged cat or bad O2 sensor?

Paul do you know the ford part number?
Cheers. Common sense isn't very common.
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2007 Land Rover Freelander2 I6 hse Auto

We didn't get any FORD with the VOLVO/LAND ROVER 3.2 over here.

the part number is

LR023777

If you can find a vendor that will sell it to you that has a picture then get the part marked FOMOCO.

It may be easier to just go to LAND ROVER and get one


If you go to this website you will see a picture of the BRITPART it is marked with FOMOCO

https://www.lrdirect.com/lr023777-cover-cylinder-head


Good luck

Paul

PS don't buy a low quality part.....make sure that it is marked FOMOCO

The easiest solution may be

https://www.duckworthparts.co.uk/landrover...d-lr023777

I know that those people have been very helpful to the FREEL2 members.

Good Luck

Paul

Up date.
Had trouble getting a new Cylinder head LR0023777 quickly, lots can get one in a week or so, put it down to it's only for the i6 so not many stock them.
Got one from Maltings Off Road Ltd who happen to be close to me, had to wait for three days to get it sent from their warehouse, i was told that it was made in Sweden and cost £102 which was quite good, i collected it from them without checking, turns out it was made in China i needed the car working for the next day so fitted it, there was an improvement in so much that it was only misfiring on cylinder 6 took it all back out and checked it again, looked like the seals where quite thick so refitted it tightening the bolts a bit more, next test came up with misfiring on 3,5 and 6, getting desperate now i took it off again and put some sealant on the seals, now i've got a code reading P0365. camshaft position sensor B circuit bank 1 before it was bank 2, there's no dash warning and the car is running even better than before although i put that down to the new sparkplugs i fitted . strange thing is there are two settings on my code reader one says there is a fault and the other says there isn't  Common sense isn't very common.
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2007 Land Rover Freelander2 I6 hse Auto

Axle,

I don't recommend that you use a cheap aftermarket part.

So let's look at the problems that you are currently having

1. P0365 is a camshaft timing error

The intake Cam and Exhaust Cam and Flywheel all have sensors and the timing is checked. If the VVT Solenoid isn't working properly then it will set this code (note VVT is for the intake camshaft only an d there is just 1 solenoid)


2. Misfire 3, 5, 6

From the service manual CPS solenoid valve - cylinders 3, 5 and 6
This is the Solenoid that does the Variable Valve Lift and there are two of these and one of them is for cylinder 3, 5, 6


You may need some new solenoids


Note: if getting the LAND ROVER part is too difficult then you can use VOLVO parts.

I will try to find a link to help with this

Take care

Paul

Quote:

The Intake has Variable Valve timing and Variable Valve lift.

Variable Valve Timing (1 solenoid per engine)
https://landroverforums.com/forum/lr2-35/p...le-113192/
30731116, Volvo
31251224, Volvo
36002690, Volvo
7G9N9M424AA, FORD
LR011224 LAND ROVER


Variable Valve Lift (2 solenoids per engine)
LR025967 Land Rover
31216281 Volvo

Hi Paul, sorry i didn't make myself clear.
I ordered a Swedish made part that turned out to be of Chinese manufacture. I had no option but to fit it as i had a 600 mile trip to make the next day. so i had to use it even though you said not to. I can get the part from LR but not in time.
After making several attempts i got all the original faults removed but got a completely new code "P0365 Camshaft position sensor B circuit bank 1" which confuses me because it is the other bank from the old codes!
Could i have damaged something while fitting?
While stationary i have revved to 4500 rpm with no problems nor any codes coming up.
Driving the car is smooth and quiet as originally for awhile then the engine light comes back on and losses power and is rougher. Common sense isn't very common.
_______________________________
2007 Land Rover Freelander2 I6 hse Auto

Axel,
No worries

Sometimes decision have to made that are not ideal. (A field expedient repair is a good way to think about it)


The sensor for the intake camshaft and exhaust camshaft can cause the Code that you are getting.
Also the Solenoid can cause the code if it doesn't adjust the timing as expected.

Check the wiring to make sure the nothing is broken or loose for these three parts

Click image to enlarge