So Ross, the current owner of 4FOXSN8X, is having an issue where when he or the mechanic goes to start the car it won't start. He has some small parasitic draw that is lowering battery voltage past 12v and then he's getting no spark. Does VEMS stop sending spark after a certain voltage point? Can that be disabled?
Thanks dudes. I can't find anything online, or at least on my phone, that talks about this but I vaguely remember it being a thing.
Yes... I know a charger for ten minutes or a battery tender would "fix" the low voltage until the draw was found.
VEMS no spark while cranking with low voltage
VEMS no spark while cranking with low voltage
Matt
18 Silverado 1500 work pig, roof rack and tonneau cover
11 Jetta sedan TDI DSG, rear muffler delete
GONE :( 87 4ktq - 4 FOX SNAKES

18 Silverado 1500 work pig, roof rack and tonneau cover
11 Jetta sedan TDI DSG, rear muffler delete
GONE :( 87 4ktq - 4 FOX SNAKES

- ringbearer
- Posts: 1282
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Re: VEMS no spark while cranking with low voltage
I don't know but you are a great car seller, still helping years later 

Re: VEMS no spark while cranking with low voltage
The answer is that NO this doesn't exist. Thumbs up.
Matt
18 Silverado 1500 work pig, roof rack and tonneau cover
11 Jetta sedan TDI DSG, rear muffler delete
GONE :( 87 4ktq - 4 FOX SNAKES

18 Silverado 1500 work pig, roof rack and tonneau cover
11 Jetta sedan TDI DSG, rear muffler delete
GONE :( 87 4ktq - 4 FOX SNAKES

Re: VEMS no spark while cranking with low voltage
Won't spark or losing trigger signal?
Re: VEMS no spark while cranking with low voltage
Any chance you related the starter signal wire? I had this happen and it was the signal wire I ran that rubbed through on the axle and shorting out!
1991 Audi 200q Holset
1991 Audi 200q Felbaum'd
1988 Audi 5000 TQ
1991 Audi 200q Felbaum'd
1988 Audi 5000 TQ
