1-Yr Check-in and Trouble Code Rant

cjm41

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We just hit the 1 year mark with our 2014 LR4, which is also my 1 year mark as a Land Rover owner. So far we’ve been pretty fortunate, having bought the truck with 75,000 miles and no warranty.

We’ve put 10,000 miles on it (all adventure, we don’t commute and this is our third vehicle anyway, purchased as a “toy”).

We’ve been to Death Valley, multiple trips up to the Sierra Nevada (to include Coyote Flat), we’ve done White Rim Road in Canyonlands National Park, Zion National Park, we’ve spent countless hour exploring dark fire trails in the rain in the Sequoia National Forest, driven through a blizzard in the Tahoe National Forest, been through Yosemite, slept in it on the side of the interstate and in the middle of nowhere.

In the next month we’re doing Joshua Tree/Mojave and Grand Canyon (North Rim). This summer would like to do PNW and maybe a trip down the coast of Baja.

All I’ve had to do to it, maintenance-wise was an oil change and had to replace the cover on top of the fuel tank that’s prone to cracking and letting fuel leak.

This week I’ve got the following planned, some of its overdue (work has been hectic the last couple months):

- Oil Change
- Trans Fluid
- Front+Rear diff fluid
- Transfer Case fluid
- Supercharger Coupler Replace
- Front and Rear Coolant Crossover Pipes
- Replace Serp and Accessory belts
- Coolant flush

Upcoming Mods:

- Dual battery setup
- Domtic fridge
- Rock Sliders (something that can double as a step for easy side roof rack access)
- Terrafirma Swingaway

This year’s Dream Mod (can’t justify the cost but would love one):

- ProSpeed hidden winch mount and bull bar

As with every Land Rover Love story, it’s not all rainbows and butterflies…

About four months ago I began intermittently getting a P0089-64 trouble code, indicating there was something wrong with a fuel pump or fuel pressure regulator or at least the sensor. When it would pop up, I’d be 800 miles from home or somewhere I couldn’t really do anything, so I’d clear the code and it wouldn’t come back for a month or more. Over the last six months it would pop up 3-4 times.

Two weeks ago on a grocery store trip, it popped up. I cleared it thinking nothing is wrong and that I really needed to replace that faulty sensor.

Well, the other day I walk into the garage and get punched in the face with the smell of fuel.

So I run the truck for 10 mins, turn it off, and the smell is super strong. So strong I can now smell it as I’m getting close to the door to the garage inside my house.

I do believe the truck is idling a bit rough as well. Still smooth as silk under acceleration and at cruising speed.

Despite replacing the faulty fuel cover thing already, it would seem I have to pull the gas tank back off. I’m thinking there must be an issue somewhere in that area. I’ll probably go ahead and replace the fuel pump while I’ve got the tank down, as well as have yet another cover on hand in case the one I just put on there six months ago is broken or cracked. I’m not sure this explains the rough idle, fuel rail pressure looks healthy.

Anyone have any insight into investigation the fuel pump/ruling things out (or in)? Any idea why I’d smell fuel despite having already replaced the faulty plastic cover on top of the tank?

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jlglr4

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There was a TSB on the p0089 code that was being fixed with a software update. I had it done, but I’ve always been a bit suspicious of that fix - thinking it might have just introduced a little tolerance for a slowly failing low pressure pump. At any rate, that TSB is out there somewhere.

The other thing you can try checking is your fuel trims. If you have a low fuel pressure condition, I would expect high positive fuel trims. Check at idle and at steady rpms at two higher levels (e.g., 1500 and 2500 RPM).

As for the fuel smell, might check your fuel line junctions in the engine bay - make sure there isn’t a little leak someplace. A really badly leaking injector can give you some fuel smell, but kind of doubt that‘s the issue here. Smoke on startup? Other than that pump flange, a leak in the evap system someplace can give you fuel oder, but should also through a code for an evap leak (and CEL).
 

cperez

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What’s your IG account, @cjm41 ? I’m sure I’ve seen and liked your photos there via my @districtrover account. Nice shots and good luck tracking down the issues you reported.
 

cjm41

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What’s your IG account, @cjm41 ? I’m sure I’ve seen and liked your photos there via my @districtrover account. Nice shots and good luck tracking down the issues you reported.
IG @discofervor - I just looked you’re following, I just followed back!

I was posting pretty consistently for a while, but I’ve not been so active lately.
 

cjm41

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There was a TSB on the p0089 code that was being fixed with a software update. I had it done, but I’ve always been a bit suspicious of that fix - thinking it might have just introduced a little tolerance for a slowly failing low pressure pump. At any rate, that TSB is out there somewhere.

The other thing you can try checking is your fuel trims. If you have a low fuel pressure condition, I would expect high positive fuel trims. Check at idle and at steady rpms at two higher levels (e.g., 1500 and 2500 RPM).

As for the fuel smell, might check your fuel line junctions in the engine bay - make sure there isn’t a little leak someplace. A really badly leaking injector can give you some fuel smell, but kind of doubt that‘s the issue here. Smoke on startup? Other than that pump flange, a leak in the evap system someplace can give you fuel oder, but should also through a code for an evap leak (and CEL).
I think the TSB was for 2015-2016. Mine is a 2014… I’m not sure what the difference would be, but that TSB def leaves out my year.

I’m heading out to the garage in a bit and I’ll check what you recommended.
 

jerrygmyers

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Those have to be the some of the best Land Rover pics I've ever seen! In regards to the fuel smell it may be related to the fuel tank flange recall. It can sometimes throw a CEL but most of the time it doesn't. I would check this if you already haven't NHTSA Campaign Number: 21V635000.
 

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