Need urgent help

Hi everyone basically I bought my first Land Rover a couple months back YEYY! Iv always wanted one and found a freelander 1 (2001) for sale within my price range so all was going well until I got the orange engine management light flashing I changed the spark plugs and coils/leads with no effect. So I plugged it in and got the following codes po170, po300 and po313 having googled these it was suggested to be a injector problem so I replaced the full injector set up and I'm still having the same issue. I spoke to a mechanic who suggested the distributor cap or rotor Arm could be the cause but I can't find it on my engine can anyone help (sorry if I'm being stupid)

If you had a dizzy, it would be on the end of the exhaust cam. However a 2001 FL1 doesn't use a dizzy. It uses a wasted spark, twin coil setup. Have you changed the coils and for new replacements?
Do you have any service history? If so, is there anything about the fuel filter being changed? If not, that's the most likely problem. The filter clogs in time, causing insufficient fuel to be injected.

I know nowt about Freelanders, but the codes you say especially po170, when googled, suggest pipe leaks, a MAF or O2 sensor problem, associated with poor fuel mixture and misfiring .. didn't see anything to do with injectors. The other codes seem related to this problem.

FreelanderSpecialist.com
8 January 2014 ·
A P0170 fault code means there is a problem with the air / fuel ratio of your Freelander.
The causes include a vacuum leak; unmetered air leaks; fuel saturated engine oil; bad O2 sensor; oil contamination in MAF connector or O2 sensor connectors.
The symptoms include MIL (Malfunction Indicator Lamp) coming on; starting and stalling issues; poor fuel economy; black smoke from exhaust; misfire when idling or under load.

So, I'd check the vacuum system and the air intake system for leaks, that the engine oil doesn't have fuel in it and then check the O2 sensor and MAF connectors. I have no clue where these are or how to check them, but a manual might help a lot, they all seem pretty easy stuff to do. Easier than injectors anyway!

Nodge68 said:

If you had a dizzy, it would be on the end of the exhaust cam. However a 2001 FL1 doesn't use a dizzy. It uses a wasted spark, twin coil setup. Have you changed the coils and for new replacements?
Do you have any service history? If so, is there anything about the fuel filter being changed? If not, that's the most likely problem. The filter clogs in time, causing insufficient fuel to be injected.

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Changed coils where is the fuel filter?

Matthew Pitfield said:

Changed coils where is the fuel filter?

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Also have o2 sensor but haven't changed this yet as I don't know how yet

Matthew Pitfield said:

Changed coils where is the fuel filter?

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The fuel filter in integral with the fuel pump, fitted in the tank. I always replace the whole pump assembly. If the filter has been clogged for some time, then the pump will have overheated anyway and won't last long.

Matthew Pitfield said:

Also have o2 sensor but haven't changed this yet as I don't know how yet

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I doubt the O2 sensor has failed this time. If you are getting injector/ lean mixture faults, the pump/ filter is the likely cause.

Your codes are the clue. P0300 is a random misfire code. So that would suggest a problem common to all cylinders, like the fuel supply.

P0313 is a code given when there's random misfiring and the fuel level is low. Normally the engine ECU is programmed to ignore a bit of misfiring when the fuel is low, just in case some air is drawn in. However sustained misfiring will trigger a p0313 code.

P0170 is a mixture code that the ECU can't determine. So it could well be the O2, if that was the only code you were getting. However with the misfiring codes too, I suspect it's a fuel supply problem. So I'd be checking fuel pressure before going further.

Nodge68 said:

Your codes are the clue. P0300 is a random misfire code. So that would suggest a problem common to all cylinders, like the fuel supply.

P0313 is a code given when there's random misfiring and the fuel level is low. Normally the engine ECU is programmed to ignore a bit of misfiring when the fuel is low, just in case some air is drawn in. However sustained misfiring will trigger a p0313 code.

P0170 is a mixture code that the ECU can't determine. So it could well be the O2, if that was the only code you were getting. However with the misfiring codes too, I suspect it's a fuel supply problem. So I'd be checking fuel pressure before going further.

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How would I check this?

Matthew Pitfield said:

How would I check this?

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With fuel pressure tester, or a dial type tyre pressure gauge will also work. I've even used a foot pump, when I lent my pressure test gauge out.
The pressure test point is a conventional Schrader tyre connection, located on the end of the fuel rail.

I had lots of fuelling problems then the fuel pump packed up (In the Conway tunnel, North Wales. But that's another story!) It's run perfectly since I fitted the new pump.
Maybe your pump is on the way out?

Thanks for all the replies guys I have now changed both 02 sensors full throttle body including injectors, spark plugs and coil packs so looks like fuel pump/filter unit is next on the list as I'm still getting the same codes

As above - check / replace the fuel pump & filter. It's a simple job.