Well THAT didn't take long part deux!

[jimbiram]

if you live in an area that is known for rats or mice and your truck is stored outdoors, there may be a chance that rats have chewed some of the ignition wires. I have had wiring on top of the engine replaced twice due to that freakish thing. Also, I expect battery failure every 18-24 months. The electronic demands are just too sensitive for a battery not putting out fullpower all the time. I have had 4 batteries in 6 years.

 

[kingfishgrapeja]

If we are attributing the condition to the hill. I would check the connections on the battery first. There were also some issues with the engine grounding strap but in an 09 I would think that would be a nonissue. I would also check and make sure that the coil packs are firmly seated.

But a flashing CEL is usually associated with a condition that will damage the catalytic converter so that points back to the MAF, a dirty throttle body, or a coil pack. A failed coil pack would throw a permanent code though.

I believe the Coolant sensor failure most applicable would refer to a coolant temp sender (for the ecu not the gauge--most have dual circuits) not the level sensor. I don't know where it is on the LR3 but my Audi's all burned through theirs eventually.

 

[MPG_LR3]

kingfishgrapeja...thanks for reply. I don't know if the condition is related to physical position of the truck on the hill (I.E. the truck tipped backward as it ascends) or whether it's the additional load on the motor caused by going up the hill. I do know that I can get the truck to exhibit the flashing CEL and reduced power mode at will by accelerating up the hill with the gas pedal floored...slightly less than floored and it doesn't do it...on flat terrain and floored it doesn't do it! .

I agree with you that it's most likely something related to MAF/Throttle Body/Coils and the first time it did it, we did get a permanent CEL but the dealer diagnosed it as a bad O2 sensor.

It's going into the shop tomorrow morning and I'm going to suggest all these things be looked into. I really do appreciate everyone's interest and suggestions!

Cheers,
Mike

If we are attributing the condition to the hill. I would check the connections on the battery first. There were also some issues with the engine grounding strap but in an 09 I would think that would be a nonissue. I would also check and make sure that the coil packs are firmly seated.

But a flashing CEL is usually associated with a condition that will damage the catalytic converter so that points back to the MAF, a dirty throttle body, or a coil pack. A failed coil pack would throw a permanent code though.

I believe the Coolant sensor failure most applicable would refer to a coolant temp sender (for the ecu not the gauge--most have dual circuits) not the level sensor. I don't know where it is on the LR3 but my Audi's all burned through theirs eventually.

 

[Count Laszlo]

It's ashamed you're having these issues on your recent purchase... I'd be upset enough to ask for something more extreme, did you buy this used from Land Rover? If so, I'd raise a little hell, not fair to you or the brand to have this type of frustration so soon. Land Rovers are awesome... So don't give up on the brand... But it seems the LR you bought hasn't been prepped for resale, if you did buy it from a LR dealership.

 

[psc]

Uphill full throttle

Add fuel pump / filter to the mix ?

 

[MPG_LR3]

Firstly, thanks for all the suggestions and supportive comments regarding my CEL issues! The truck spent a week at the dealership during which time they did the following:

Checked plugs and coils
Removed/tested/cleaned/swapped injectors and fuel rail
Tested the battery and electrical system connections
Some other stuff that I didn't even understand

They finally performed some sort of software update and that seems to have done the trick. I need them to explain to me in more detail what update and why/how they think it fixed the issue but I've had the truck back for a few days now and I haven't been able to replicate the issues I was having before. It seems to run slightly better than before and I appear to be getting slightly better mileage than before too (although I'll need to run a few tanks through it to be sure).

Anyway, all is right with the world now and I'm really enjoying having my baby back ...what an awesome truck!

Cheers,
Mike