MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: Llew on August 31, 2012, 07:07:39 pm

Title: Help needed
Post by: Llew on August 31, 2012, 07:07:39 pm

In the past four weeks I have been driving 100 miles a day round trip to work I had no problems with the car until when I went to start it as I was going home yesterday it turned over then the battery died I jumped started it first time no problems I drove it home left it till this morning and it started no problems I didn't drive it to work but came home and it did the same thing tried to start then dead battery  I did a scan and it said there was an electrical fault with my glow plug could this be the reason for the battery drain

Title: Re: Help needed
Post by: W8 Performance on August 31, 2012, 07:39:46 pm

Sounds a bit daft but have you checked the wiring in the bay and the alternator?

If its started then the glow plugs should be fine.

Title: Re: Help needed
Post by: Llew on August 31, 2012, 10:45:29 pm

I,ll check it and post back

Title: Re: Help needed
Post by: Llew on September 01, 2012, 10:52:14 am

I checked the wiring all is well but I suspect it's either the alternator or the battery as I have done a rescan and I am getting a lot of faults due to low voltage I just can't figure out wether it's the battery or alternator -- any ideas  would be appreciated

Title: Re: Help needed
Post by: Baz300 on September 01, 2012, 11:18:11 am

Do you have a multimeter?

Check the voltage on the battery with the car off (should be 12v)

Then check what the voltage is when the car is running (should be 13-14v)

If there is no increase in voltage when the car is running the alternator will be the problem

Title: Re: Help needed
Post by: Llew on September 02, 2012, 10:45:04 am

What I don't get is that there is no warning light to indicate low battery