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Old 11-26-2018, 01:57 PM
gthphotography gthphotography is offline
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So today after driving the truck, I went to restart it and just turned it over quickly (normally I pause at the second position of the key) and immediately the MIL lit up flashing. I could feel the roughness of the engine. It's a wet and cold day here in Chicago as well (why does the truck have issues with inclement weather). Anyway, I eventually got 4 codes P0305 P0302 P0300 and an unknown all on the Scanguage. All with flashing MIL. I cleared the codes with the scanguage and now I'm only getting P0302 with flashing MIL. The Nanocom showed p0302 and p1310 (or something similar), and said it was a catalyst damaging misfire. So my questions are:

1-should I replace the cat
2-what would cause these codes to trip
3-does the weather have any bering on this
4-where did the p0305 code go
5-can the cat trip the codes if its going bad

I'll entertain any and all ideas.

Thanks
Greg
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Old 11-26-2018, 02:22 PM
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How is your main ECU encasement? If not water/weather-proof, it can create problems.
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Old 11-26-2018, 02:26 PM
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no idea.
have to consult the rave.
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Old 11-26-2018, 02:32 PM
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Quote:
Originally Posted by WaltNYC View Post
How is your main ECU encasement? If not water/weather-proof, it can create problems.
What about the EVAP canister?
It's outside under the truck.
The ECM is inside? That is what you meant by ECU, yes?
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Old 11-26-2018, 03:37 PM
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The P0302 and P0305 are cylinder #2 and cylinder #5 misfires, respectively. These two cylinders share a common ignition coil. I couldn't find the Land Rover specific description of P1310, but other automakers presumably assign that to an igniter circuit malfunction. Perhaps that, too, would point to a coil not delivering the spark. I would probably check the ECU for water ingress, then if dry, pull plugs to check condition. Has the truck been tuned up recently?
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Old 11-26-2018, 03:39 PM
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And the ECU can be found hidden behind the passenger side kick panel under the dash. Water from clogged sunroof drains can drip into that area. A rotten floor/firewall can also allow that water to seep in.
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Old 11-26-2018, 04:24 PM
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How old are the wires/plugs and coil?
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Old 11-26-2018, 04:33 PM
gthphotography gthphotography is offline
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Thank you everyone for responding so far.

So cylinder 2 popped its ht lead off.
This is driving me nuts as it?s the second one to do this. 5 did it a month or two ago.
I just checked the others as best I could without removing things (so I?m only fairly certain about 3 and 5).
How is this happening. They clicked on. I?ll drive her around town and see if any other issues arise.

Side note, I love how the nanocom and the scanguage read different things.

Again. Appreciate all the input.

Cheers
Greg
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Old 11-26-2018, 04:35 PM
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If you are using an aftermarket wire they sometimes can be a bear to get on. I have seen some that feel like they are engaged only to click after applying more pressure.
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  #10  
Old 11-26-2018, 04:43 PM
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I used to use magnacores.
Switched to kingsbourn after all my magnacores went belly up.
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Old 11-26-2018, 06:16 PM
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Dammit.
P1300
P0302
P0300
P1000


I’m thinking water got on and in the coil
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Old 11-26-2018, 06:58 PM
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Quote:
Originally Posted by gthphotography View Post
Dammit.
P1300
P0302
P0300
P1000


I?m thinking water got on and in the coil
Unless I am mistaken, P1000 means your ECU memory was erased. Did you verify your ECU is dry? You said it has been rainy.

In case you didn't already know, the coil on your truck is tucked way up on top of the bellhousing under the upper plenum. Supposedly the engineers put it there to keep water out. It seems to work out well, though people complain lots about getting in there for tune ups.
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Old 11-26-2018, 07:56 PM
gthphotography gthphotography is offline
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Wire 2 was scorched and hard and cracked
I’ll check the ecu eventually
Wire 5 has an arc burn.
What the fuck. Kingsbornes are frying and my magnacores wouldn’t let go of the plugs and the metal tabs inside would pull out.
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Old 11-26-2018, 07:57 PM
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Quote:
Originally Posted by PhD_Polymath View Post
Unless I am mistaken, P1000 means your ECU memory was erased. Did you verify your ECU is dry? You said it has been rainy.

In case you didn't already know, the coil on your truck is tucked way up on top of the bellhousing under the upper plenum. Supposedly the engineers put it there to keep water out. It seems to work out well, though people complain lots about getting in there for tune ups.


And fuck Land Rover for that horrible placement. Seriousy. Horrible. I hate changing wires.
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Old 11-27-2018, 08:56 PM
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Fixed everything with new word for 2 and 5. I actually did it without removing the intake manifold. First time ever for me. Still, stupid design.
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Old 11-28-2018, 12:06 PM
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Ironically, my SES light started flashing this morning on the way in to work. Cylinder #6 misfire. It happens any time I give more than light throttle. Here is to hoping my issue is just a plug, wire, or coil. I just built this engine 2100 miles (3 months) ago.
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Old 12-01-2018, 12:39 AM
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Originally Posted by PhD_Polymath View Post
Ironically, my SES light started flashing this morning on the way in to work. Cylinder #6 misfire. It happens any time I give more than light throttle. Here is to hoping my issue is just a plug, wire, or coil. I just built this engine 2100 miles (3 months) ago.
Hahahahaha.
I rebuilt mine within the last year.
Misfires are so frustrating.
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Old 12-05-2018, 01:47 PM
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Quote:
Originally Posted by PhD_Polymath View Post
The P0302 and P0305 are cylinder #2 and cylinder #5 misfires, respectively. These two cylinders share a common ignition coil. I couldn't find the Land Rover specific description of P1310, but other automakers presumably assign that to an igniter circuit malfunction. Perhaps that, too, would point to a coil not delivering the spark. I would probably check the ECU for water ingress, then if dry, pull plugs to check condition. Has the truck been tuned up recently?
They may physically be on the same coil, but they are not electrically connected.
1 & 6 share a coil
8 & 5
4 & 7
3 & 2

Wasted spark, both cylinders fire at the same time. One is on the compression stroke, the other exhaust.

DII ECus are not subject to the water ingress DIs are

Replace all eight plugs and wires, I agree, Magnecor jumped the shark many years ago, premium price for subpar connectors at coil end
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Old 12-05-2018, 06:18 PM
gthphotography gthphotography is offline
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Quote:
Originally Posted by ptschram View Post
They may physically be on the same coil, but they are not electrically connected.
1 & 6 share a coil
8 & 5
4 & 7
3 & 2

Wasted spark, both cylinders fire at the same time. One is on the compression stroke, the other exhaust.

DII ECus are not subject to the water ingress DIs are

Replace all eight plugs and wires, I agree, Magnecor jumped the shark many years ago, premium price for subpar connectors at coil end
thanks PT
Always great to hear from you.
She's purring like a kitten currently.

So how does the waster spark happen?

Cheers
Greg
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