Alternator concerns
My 2006 LR3 HSE won't crank, and it's been slow-cranking for the past week, indicating to me that the battery is dead or not charging. In addition, other electrically-dependent systems are acting funny. This battery is not that old (2-3 yrs), so I'm suspecting the alternator. The alternator seems to be making noises, much like a bad bearing sound, which has been going on for quite some time.
So...how much fun is it to replace a bad alternator? (I don't want to rebuild it!). Are there any threads on this one?? Thanks in advance! Dan |
Pretty easy. You will need a fan clutch tool to remove the fan.
AB has a vid. Just watched it and they don't remove the fan, to each his own. |
OK, I did a little poking around on the LR3, charged it up, put a voltmeter on the battery while it was running, and realized it was putting out 14+ volts. I drove it down to the local parts joint, they 'tested' it, and it didn't hold a charge.
I had the battery replaced, and I'm back in business. Now I'm wondering: is it possible that the alternator could be functioning intermittently, and end up failing me at some time in the very near future?? |
An addendum to the previous post:
The alternator was replaced in Jan 2014; the battery in Oct 2015... |
You can have the alternator tested.
Anything is possible. Use a multimeter or GAP tool to see for yourself what the car is outputting to the battery while running. |
As I mentioned above, the multimeter showed 14+. I also have a Scan Gauge II that I can connect to the OBD II port, to keep an eye on it while running around. I'll pursue that next...
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Originally Posted by djatkinson
(Post 644356)
As I mentioned above, the multimeter showed 14+. I also have a Scan Gauge II that I can connect to the OBD II port, to keep an eye on it while running around. I'll pursue that next...
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Originally Posted by djatkinson
(Post 644348)
OK, I did a little poking around on the LR3, charged it up, put a voltmeter on the battery while it was running, and realized it was putting out 14+ volts. I drove it down to the local parts joint, they 'tested' it, and it didn't hold a charge.
I had the battery replaced, and I'm back in business. Now I'm wondering: is it possible that the alternator could be functioning intermittently, and end up failing me at some time in the very near future?? |
Its very complicated. Normally I have 14+ volts, but I started seeing 13.8 ish in the summer. On a trip though Arizona in 110+ temps my voltage dropped to 12.1 volts.
So, I was sure my Alt was on the way out. Changed it in a parking lot. turns out it was fine but the ECU was throttling the charging as my under hood temps were 150+(black LR3). |
Originally Posted by KMET
(Post 644467)
Hopefully, I can figure it out on my 2006 LR3 HSE... |
"...the ECU was throttling the charging as my under hood temps were 150+(black LR3)."
My LR3 is also black. I have a lot to look forward to here in N TX!! |
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