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P0301- Cylinder 1 misfire. Restricted Performance. Rough idle under Load. 2012 LR4
Trying to get to the bottom of this gremlin: On cold startup, the engine will idle rather rough. Under load, it will hesitate a climb. Check engine light will flash, go into restricted performance mode. On restart, it will operate but still somewhat sluggish. Engine performs better after it was...- Red Top Engine
- Thread
- Replies: 5
- Forum: LR4
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Battery Management System & power discharge leak
On a day at the beach, my alternator failed last summer. I drove the truck as far to as I could before the battery was completely depleted. It was quite impressive how the BMS (battery management system) categorically shut off non-essential power consuming systems, down to the brake lights...- Red Top Engine
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- battery bms
- Replies: 10
- Forum: LR4
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Lessons Learned Rebuilding 5.0 V8 2012 LR4 Engine
I’ve had to rebuild the 5.0 V8 jaguar engine of my 2012 LR4 a few times (yes you read correctly) and have learned a few painful (and embarrassing) lessons along the way that may be of value to someone rebuilding the engine. The truck did not run when I purchased it unseen. All I knew is it had...- Red Top Engine
- Thread
- engine rebuild lessons
- Replies: 41
- Forum: LR4
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LR4 Starting Anomaly
I replaced a flywheel on a non-supercharged LR4 with a supercharged LR4 (original was defective). I assume the flywheels are the same. Now truck won’t start.. did so once but couldn’t replicate. I have fuel in rail, spark, and compression. Timing was triple checked. Engine coolant temp is at...- Red Top Engine
- Thread
- Replies: 4
- Forum: LR4
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Anyone had problems with Oil Pump?
I have no oil pressure on a 2012 LR4. Noticed there is no oil circulation through the oil filter cartridge while briefly running the engine. Is there a history of oil pump failures on these 5.0 engines?- Red Top Engine
- Thread
- Replies: 6
- Forum: LR4
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Anyone had problems with Oil Pump?
I have no oil pressure on a 2012 LR4. Noticed there is no oil circulation through the oil filter cartridge while briefly running the engine. Is there a history of oil pump failures on these 5.0 engines?- Red Top Engine
- Thread
- Replies: 0
- Forum: LR4
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Top Engine Rebuild
Hello! I'm new to this site. My newly purchased LR4 hesitated to start and ran rough for 2 min before stalling. I suspected fuel pumps (all three) and timing chains- replaced all,only to discover symptoms remain minus timing chain slapping noise. I should have done a compression test before...- Red Top Engine
- Thread
- Replies: 0
- Forum: LR4
