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On World Land Rover Day this week, I arrived at my truck after work and found it would not start. It could crank and crank and crank but never catch. I checked the spark plug wires, all firmly seated, checked the fuel rail schrader valve and got a nice spray of fuel. Even so, ir occurred to me it could be the fuel pump relay, so when I swapped in a relay, she fired right up, but that turned out to be a coincidence. Truck ran fine for a few days, then this morning the same thing happened. Cranks and cranks but won't catch. I'm at my wit's end with this thing and I'm about ready to send it for a long drive off a short pier.
I imagine it must be related to my intermittent stalling problem I had months ago. After lots of deliberation on that, I decided it was the fuel pump and relaced it. Truck ran fine for months, suddenly this week she's misbehaving on me. I seem to have fuel pressure when it happens, as I get a nice spray out the end of the fuel rail schrader valve. I am also getting frequent CEL with bank 1 and 2 too rich codes. I clear them and they are coming back with increasing frequency.
These are the things I've replaced in the course of my investigation:
I had a similar sounding problem with my 05 LR3. Cranking no start, fuel supply is good so must be ignition system. I noticed that fuse F6 -15A was blown and kept blowing. I replaced the crank position sensor as I read this could be a culprit, no change fuse still blew. Then I replaced the Ignition Coil Capacitor (Part Number: LR004160), small part that lives on the top of the engine, plug and play, no more blowing fuse, car started, yay no matches. Other problems in your ignition circuit could be bad earths, check you main body ground cable.
Cheers J
^ On that note, I never heard of that capacitor causing a non-start but clearly its possible. The transmission capacitor can also cause a no-start, that's a fairly common issue. Fortunately on the LR3 you can just unplug it. Later models requires replacement. Maybe check both, unplug both.
^ On that note, I never heard of that capacitor causing a non-start but clearly its possible. The transmission capacitor can also cause a no-start, that's a fairly common issue. Fortunately on the LR3 you can just unplug it. Later models requires replacement. Maybe check both, unplug both.
Why would Land Rover include these parts which stop ignition when they go bad but allow the car to run when they're unplugged. I'm not saying you're wrong, I'm just saying what a dumb system.
Well its not an intentional design, the part fails in a way that causes either a signal issue to the ECU or ground out/short. So disconnecting the part resolves the issue because the part itself its not critical, its just for noise suppression in the audio system.
That is not to say they are not idiots when it comes to design. If you pull the HVAC controls, no start also. LOL
Well its not an intentional design, the part fails in a way that causes either a signal issue to the ECU or ground out/short. So disconnecting the part resolves the issue because the part itself its not critical, its just for noise suppression in the audio system.
That is not to say they are not idiots when it comes to design. If you pull the HVAC controls, no start also. LOL
I decided to blame Ford for these quirks.
Where is this fabled transmission capacitor? I checked out the RAVE but the IMO the manual sucks for the LR3. Much more useful on earlier Discovery models.
yup DakotaTravler thats the one i'm talking about in your pic, seems to have a lot of different names "v8 coil suppressor" "ignition capacitor" .... I did try to just unplug the broken one and replace the fuse but no start. had to get a new one from LR. the new one was slightly different to the defective one as they said they updated that part in later years.
I had same thoughts as have been expressed, why make a non critical part like this a critical part on a critical circuit with no work around like just unplugging it. This means its just another part to add to bring along when going remote.
LR3 No-Start: Ready to light the match
