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vwnewton, VW Owner,ASE Master and L1 Advanced
Category: VW
Satisfied Customers: 307
Experience:  25 years of VW obsession turned into a job, last 15 years as a VW Tech.
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Danny, Helvio here.. 2000 Jetta TDI. started surging

Customer Question

Danny, Helvio here.. 2000 Jetta TDI. started surging (electrical surge) noticible in low RPMs
Submitted: 1 year ago.
Category: VW
Expert:  Tim Mohr replied 1 year ago.

Hi, my name is ***** ***** do you mean by an electrical surge?

Customer: replied 1 year ago.
hi Tim, i say electrical because if idling the engine try to stall, (once every minute or so) the radio and the head lights flash off. just now, it did taking off from a traffic light and the ABS flashed and buzzed, the glow plug light started to fash and check engine light came on
Customer: replied 1 year ago.
also noticeable due to the blow motor speed variation when it happens
Expert:  Tim Mohr replied 1 year ago.

ok, this is usually caused y a bad alternator, do you have a voltmeter? It is easy to verify?

Customer: replied 1 year ago.
Alternator?? it would not cause the radio to shut down and the head lights don't you think? it has a brand new powerfull battery.. it should hold unless the alternator is in short circuit
Expert:  Tim Mohr replied 1 year ago.

the symtoms your are having sound all like a low voltage situation, do you have a volt meter? we can check ?

Customer: replied 1 year ago.
no i do not have one here with me
Expert:  Tim Mohr replied 1 year ago.

I will opt out and see if another expert can help,Tim