Not much happens on the Renault side, so Ill try here as I need to know ASAP before anything else happens... however, it covers majority of cars...
Problem: Flat battery...
Battery state indicator showing green, an apparently ok battery.
Another known good battery fitted, car back to life, engine running a nice 14.2v into the battery, however, with ALL electrics on thats Lights and full beam, heater blower on full, rear heated screen on, rear fogs on.. engine idleing the Volts are now ALL over the plave, from 0 to 15v, 10v 12v 11v 15v 8v 0v etc etc....
Looks like altinator to me?? Correct??
Paul
Altinator ISSUE, wrong car, but in general any car
Moderator: RichardW
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- My Cars: M reg Xm S2 2.1td Auto Exclusive. 269k and rising
L reg XM S1 V6 12v Manual SEi
L 94 XM 2.1 TD auto total resto
2008 Peugeot 207 Sw 1.6 16v hdi. 217k and rising
2010 Peugeot 207 SW 1.6 8v HDi 161k and rising - x 70
Altinator ISSUE, wrong car, but in general any car
Sharing a pug 207 1.6 hdi Sw 16v.
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project
A very sad...
1994 XM 2.1 d auto
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project
A very sad...
1994 XM 2.1 d auto
Probably nothing wrong, I had that once when measuring with an el cheapo digital multimeter.
At idle with everything switched on, most of the current from the alternator goes into the load and the battery can’t smooth the pulsating alternator voltage.
Say that it’s a metering fault, not a measuring fault and an analogue or upmarket digital meter wouldn’t show that.
At idle with everything switched on, most of the current from the alternator goes into the load and the battery can’t smooth the pulsating alternator voltage.
Say that it’s a metering fault, not a measuring fault and an analogue or upmarket digital meter wouldn’t show that.
2002 C5 2.0i AL4 230,000 km 76372389
Another wellknown issue is a bad earth on the alternator.
Sounds duff, but the problem is light alloy parts mixed with steel mounting bolts & nuts, which inherently calls for white-corrosion on the alloy parts.
The result is a high ohmic earth path.
The solution is to run a separate earth cable from any generator housing bolt to the battey minus pole - or a tested/serviced good earth point on the gearbox earth cable bolt.
This separate earth cable must of course be the same gauge as the charge cable from the alternator.
Sounds duff, but the problem is light alloy parts mixed with steel mounting bolts & nuts, which inherently calls for white-corrosion on the alloy parts.
The result is a high ohmic earth path.
The solution is to run a separate earth cable from any generator housing bolt to the battey minus pole - or a tested/serviced good earth point on the gearbox earth cable bolt.
This separate earth cable must of course be the same gauge as the charge cable from the alternator.
Anders (DK) - '90 BX16Image
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- Posts: 8061
- Joined: 30 Dec 2004, 23:10
- Location: Somewhere in North Wales, Anglesey
- My Cars: M reg Xm S2 2.1td Auto Exclusive. 269k and rising
L reg XM S1 V6 12v Manual SEi
L 94 XM 2.1 TD auto total resto
2008 Peugeot 207 Sw 1.6 16v hdi. 217k and rising
2010 Peugeot 207 SW 1.6 8v HDi 161k and rising - x 70
Thanks guys...
I was gussing diodes too... I didn;t beleve for ONE moment a varying voltage was normal! Thats Not a job of an altinator!
Paul
I was gussing diodes too... I didn;t beleve for ONE moment a varying voltage was normal! Thats Not a job of an altinator!
Paul
Sharing a pug 207 1.6 hdi Sw 16v.
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project
A very sad...
1994 XM 2.1 d auto
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project
A very sad...
1994 XM 2.1 d auto