Another Range Rover/Land Rover adventure. Our 2006 Range Rover Sport HSE with the 4.4 has an issue. I occasionally get a hiccup, actually that is what it feels like, while driving on the freeway at 65 mph +/- It usually does it after the truck warmed up. It rarely does it on my drive to work, about 10 miles, but sometimes does it after driving 15 or so miles as I am out during the day, after the truck has sat in our office garage for an hour or two. It doesn't do it all of the time. As I am driving along, it kind of hiccups or bucks, like it skips a gear tooth or two. I haven't noticed it other than on the freeway. Yesterday as I drove it around, about 30 total miles, it ran like a brand new truck, no issues. The voltage is low and has been since I changed out the alternator (engine bay fuse box had an issue, had to bypass a connection) I am getting 13 o 13.4 per my Gap Tool. Our LR3 puts out 14 plus. Recently, it has been slow to start up. It turns over and over but won't start up. Thought it might be bad gas, not. Thought it might be a fuel pump issue, but that doesn't seem to be the case. When it does start up, I am getting an amber parking brake light that stays on. I shut the truck off and restart and the amber light goes out. Today I got a check engine light on start up. I checked it out and it came back as a P0345, cam shaft position sensor A circuit, Bank 2. Cleared the code and it didn't come back on the drive to the office today. I am thinking that it is a voltage-related problem.

Anybody with a tutorial on how to check voltages? thanks Phil

2005 LR3
2006 Range Rover Sport
2010 Ranger Rover Sport

 

I think you're in your own head, Phil....

 

Funny. I have been having a very light hiccup as of late. At least I think. No codes and the computer should thrown a misfire code. So I am monitoring.

That voltage is low. Before starting next time, check the battery voltage first. Should be above 12 easily. If not then you likely are having low voltage starts and on these trucks low voltage starts cause all sorta os issues that can usually be clearly with a restart.

To check voltages, just use a meter. Or if you have navigation, access the Vehicle Signals area of the secret menu. (google search LR3 secret menu). Your startup operating voltage should be about 14.0-14.5 volts Operating once warmed up for me is usually 13.8 to 14.2. Keep in mind the charging system is regulated a bit by the ECU and is temperature influenced. In winter I have seen startup voltages as high as 14.6.