Datatek
Well-Known Member
So nearly flat
well it doesn't have any trouble starting
A good battery is a must, but I would look at the voltage on the connector the ABS sensor plugs into.
>5v is good (mine is 5.3v on both front sensor plugs). So the abs ecu was outputting the required volts.
From memorThe sensors should present c.12kOhms resistance if they are good.
Nanocom sensor values (on a stationary vehicle) showed 2.3v on the good sensors and 0v on the one that was duff.
Do you have a Nanocom to hand?
>5v is good (mine is 5.3v on both front sensor plugs). So the abs ecu was outputting the required volts.
From memorThe sensors should present c.12kOhms resistance if they are good.
Nanocom sensor values (on a stationary vehicle) showed 2.3v on the good sensors and 0v on the one that was duff.
Do you have a Nanocom to hand?
Unfortunately not - Kermit kindly used his one on my P38 last time. But i think i may as well charge the battery up and check the voltage across the battery with engine running.
Last edited:
12.3 isn't good, can you measure the cranking voltage? Much less than 11 and the battery is toast.
It might start, but ECUs will be getting low voltage while cranking which can give odd/random faults
You also want to measure what voltage you're getting with the engine running.. 13.8 and your battery won't last add long as it should, 14.7 is ideal
It might start, but ECUs will be getting low voltage while cranking which can give odd/random faults
You also want to measure what voltage you're getting with the engine running.. 13.8 and your battery won't last add long as it should, 14.7 is ideal
13.8v when running it is
At least it's charging. Modern batteries like a higher voltage and won't last as long.13.8v when running it is
You can replace the regulator quite cheaply if the rest of the alternator (bearings etc) is ok.. there's a few freds onnit.. search for mobiltron
Yes, but, no, but...... can you change the regulator in-situ without removing the alternator and putting it on a bench? The world needs to know.
I would have thought you have to take it off the car - or at least remove the plastic cover at the back - on older vehicles it just screwed in from behind lol
BOSCH 1197311549 is the part number for the 150amp regulator but can't find one anywhere on the net
You can on the oil burner although easier off. Petrol should be easy given its position.
if you can find one
This is what i have in mine, also 150A/Thor
https://www.landyzone.co.uk/land-rover/mobiletron-vr-vw010-alternator-regulator.361590/
i wonder if diagnostics would throw up different codes now the battery is fully charged ?Poorly sensor again then would seem likely
Datatek
Well-Known Member
So at least low battery voltage has been eliminated.
Last edited:
Unless the sensor is faulty ie resistance too high
