Battery won't charge

Post by **vanzep** » Wed Mar 27, 2019 7:50 pm

Here are some pics of the guages i took out my BB1

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Sat Mar 30, 2019 11:52 pm

Check the voltage (DC and on AC) when the engine is running now.

Shouldn't have anything on AC but nothing over 14.7V DC. If you have AC ripple voltage then that could be causing the light faults.
Also check all earths and the charge light/exciter cable are correctly fitted to the alternator (that's the small one).

blockh3ad · Post by **blockh3ad** » Mon Apr 08, 2019 8:15 pm

O2 sensor had gone so replaced that got rid of engine check light but my 4ws light stays on but it's not thrown up any code

blockh3ad · Post by **blockh3ad** » Wed Apr 10, 2019 4:48 pm

Checked my original alternator and found out it was the voltage regulator had packed up,replaced it and all but one light went out,success but 4ws light stayed on code 62,4ws power motor, can anyone point me in the right direction where I can locate, and thanks for everyone's input

Scott560 · Post by **Scott560** » Wed Apr 10, 2019 5:15 pm

have you done a 4ws reset?

my 5th gen would throw a code if it stalled whilst i was parking - voltage dropped too low is my guess... Resetting it sorted it out...

blockh3ad · Post by **blockh3ad** » Wed Apr 10, 2019 5:25 pm

I have a 4th gen how do you do that

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Wed Apr 10, 2019 7:56 pm

4ws motor is in the rear steering rack.
Not seen that code come up before. Have a read through the fault finding guide in the service manual for that code and see where it takes you?

blockh3ad · Post by **blockh3ad** » Sat Apr 13, 2019 5:58 pm

Update, started the lude up this morning and all of the lights,even the 4ws, got just over halfway to work and the battery light came on but when I reved the engine it went out,nearly got to work and all of the dashboard lights came on one by one and then the engine died, just put another alternator on charged for about a minute and then stopped charging, I am at a complete loss

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Mon Apr 15, 2019 12:43 pm

There's a similar thread running for a 5th gen at the moment. There is more to the charging circuit on a lude than just the alternator.

Have a look in the oem service manual, page 23-117 onwards.

What model 4th gen do you have? UKDM? JDM? Engine? Depending on which model it is, will depend whether you have the ELD or not (there are two different types of circuit, as shown in 23-119 or 23-120.
Fault finding flowcharts are from page 23-121 onward.