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How long could a diesel run with a failed alternator?
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CarGuru > Volkswagen > How long could a diesel run with a failed alternator? 31 January 2005 05:47:51
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How long could a diesel run with a failed alternator?

Rob Guenther 31 January 2005 05:21:57
 Well this is just a hypothetical question brought on by a friend of mine
telling me he made it 20 minutes after his alternator died on his Lumina...
I was thinking, with no spark plugs and much less of an electrical load, how
long would a diesel engine run without any alternator?

Seems to me only the ECU would need power (no electric fuel pumps on a
diesel right?), lights could be disabled by switching them off and pulling
the parking brake up far enough to activate the DTRL shutoff - but not
enough to apply the parking brake.


Add comment
Joseph Meehan 31 January 2005 05:43:27 [ permanent link ]
 Rob Guenther wrote:> Well this is just a hypothetical question brought on by a friend of> mine telling me he made it 20 minutes after his alternator died on> his Lumina... I was thinking, with no spark plugs and much less of an> electrical load, how long would a diesel engine run without any> alternator?> Seems to me only the ECU would need power (no electric fuel pumps on a> diesel right?), lights could be disabled by switching them off and> pulling the parking brake up far enough to activate the DTRL shutoff> - but not enough to apply the parking brake.

It all depends. I would not expect a new electronic injection to do as
well as an old mechanical model. The old ones could do hundreds of miles.
I don't think they needed electric for anything other than holding the fuel
kill switch open.

--
Joseph Meehan

26 + 6 = 1 It's Irish Math


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Tony Bad 31 January 2005 05:47:51 [ permanent link ]
 
"Rob Guenther" <robertguenther@nos­pamsympatico.ca> wrote in message
news:VKfLd.1744$Ck1­.332312@news20.bellg­lobal.com...> Well this is just a hypothetical question brought on by a friend of mine> telling me he made it 20 minutes after his alternator died on his
Lumina...> I was thinking, with no spark plugs and much less of an electrical load,
long would a diesel engine run without any alternator?

Not sure about a TDI, but I once was on my way from FL to NY, and my
alternator crapped out about 200 miles into a 1100 mile trip...made it the
whole way. It was quite without a radio!

--
Tony Bad
--------------

02 Jetta Wagon
01 Eurovan MV
91 Jetta 1.6 Diesel
86 Jetta
79 Rabbit 1.5 Diesel (semi-retired for now)
Schwinn Continental 10 Speed
Radio Flyer Pedal Car (my daughter made me add this)


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CarGuru > Volkswagen > How long could a diesel run with a failed alternator? 31 January 2005 05:47:51
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