Quote:
Originally Posted by crystalworks
LOL, stop on your way home and buy a battery. I change them religiously at 4-5 years in any BMW.
But seriously, yeah when you get home check the idle voltage. If it's good (13.8+), I'd buy a battery. Might be a good idea to drive around a bit while monitoring the voltage output after buying a battery. Sometimes a failing alternator doesn't present itself at idle. Reset all codes and see how the truck reacts. These things are very sensitive to voltage dips/spikes or not getting enough current from the battery. If you notice anything dipping below 13.6 while driving, your alternator brushes are shot.
^Those issues might not be your shuddering issue, but the EGS in general is very sensitive to voltage/current. Your battery is definitely due for replacement so is an easy thing to start with.
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Im using INPA now. At IDLE it’s at 14v exact. When I rev the gas the voltage remains the same. When I let off the gas the voltage dips to 13.7 or so then settles on 14 exactly.
The battery on his laptop is shot so unfortunately I can’t drive around with it I can only do this at home. Do those numbers sound like a bad battery? There is another 95 amp hour battery down the street I can just go pick up for 200 bucks. Since the age of the battery is five years plus maybe it would be a good idea to just do that today. I can use ISTA to register the new battery.
12-07-2021, 02:36 PM
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