Zt alternator regulator

mgzrjake · 9th April 2022, 15:53

Hi all hope we are looking forward to the Easter break. I had the red charge fault appearing in the ipk screen. Checked it out alternator pushing 11.5. Looked at a few posts and you can buy a regulator be it 2 pin or 3. Mine is 2 pin so I purchased one and after turning my hands and lower right arm black and blue I removed and refitted the new one in around an hour.

replaced battery and started the car charge fault gone but battery light still on

.

Can anyone advise or shed any light

on this problem.
Thank you
Jt

dave lincs · 9th April 2022, 16:32

What voltage is at battery now with engine running?

mgzrjake · 9th April 2022, 16:45

Not checked it yet

simondhopkins · 15th April 2022, 22:40

I had similar. Replaced the regulator and still charge light on, was the actual alternator that had failed not the regulator. Bought a replacement from eurocarparts and didn't check the part properly when I bought it as was a landrover part number and didn't fit (bottom casting is slightly different).

MSS · 16th April 2022, 00:05

It's not unknown for the rotor to go open circuit on the Valeo alternators. If the regulator is off, you could check it using a low voltage and light bulb.

The rectifier diode pack is robust but can fail. Checking this is more involved and one really needs to understand how the diode configuration works.

I had my Valeo rebuilt by an automotive electrician with new rotor, bearings, regulator pack. It cost just under £100.

SD1too · 16th April 2022, 07:10

Quote:

Originally Posted by mgzrjake

Not checked it yet

Any update on this Jake or have you solved the problem?

Simon

mgzrjake · 16th April 2022, 14:59

No Dmgrs have sent another to try that in case the 1st was faulty. Not really feeling this will sort it so it will be a new one.

9th April 2022, 15:53	#1
mgzrjake Loves to post MG ZTT 135+ diesel, MGZS 180 saloon MK2 Join Date: Mar 2016 Location: stockport Posts: 435 Thanks: 137 Thanked 72 Times in 53 Posts	Zt alternator regulator Hi all hope we are looking forward to the Easter break. I had the red charge fault appearing in the ipk screen. Checked it out alternator pushing 11.5. Looked at a few posts and you can buy a regulator be it 2 pin or 3. Mine is 2 pin so I purchased one and after turning my hands and lower right arm black and blue I removed and refitted the new one in around an hour. replaced battery and started the car charge fault gone but battery light still on . Can anyone advise or shed any light on this problem. Thank you Jt

16th April 2022, 00:05	#5
MSS This is my second home Rover 75CDT, Jaguar XF-S 3.0V6, V'xhall Omega V6 Estate, Twintop 1.8VVT, Astra Estate and Corsa 1.2 Join Date: Dec 2007 Location: Suffolk Posts: 7,083 Thanks: 283 Thanked 624 Times in 440 Posts	It's not unknown for the rotor to go open circuit on the Valeo alternators. If the regulator is off, you could check it using a low voltage and light bulb. The rectifier diode pack is robust but can fail. Checking this is more involved and one really needs to understand how the diode configuration works. I had my Valeo rebuilt by an automotive electrician with new rotor, bearings, regulator pack. It cost just under £100. __________________ Member of the Peasant Underdog Class, Grade 1

16th April 2022, 14:59	#7
mgzrjake Loves to post MG ZTT 135+ diesel, MGZS 180 saloon MK2 Join Date: Mar 2016 Location: stockport Posts: 435 Thanks: 137 Thanked 72 Times in 53 Posts	Re reg No Dmgrs have sent another to try that in case the 1st was faulty. Not really feeling this will sort it so it will be a new one.

9th April 2022, 16:32	#2
dave lincs Posted a thing or two Rover 75 Saloon Join Date: Mar 2014 Location: Louth Posts: 1,409 Thanks: 380 Thanked 986 Times in 476 Posts	What voltage is at battery now with engine running?

9th April 2022, 16:45	#3
mgzrjake Loves to post MG ZTT 135+ diesel, MGZS 180 saloon MK2 Join Date: Mar 2016 Location: stockport Posts: 435 Thanks: 137 Thanked 72 Times in 53 Posts	Not checked it yet

15th April 2022, 22:40	#4
simondhopkins Loves to post Vauxhall Vectra C Join Date: Jul 2016 Location: Burnley Posts: 445 Thanks: 179 Thanked 88 Times in 62 Posts	I had similar. Replaced the regulator and still charge light on, was the actual alternator that had failed not the regulator. Bought a replacement from eurocarparts and didn't check the part properly when I bought it as was a landrover part number and didn't fit (bottom casting is slightly different).