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How Fast Should A Starter Turn The Engine? Is It Getting Old
by
AudiVWguy
on 18 Mar, 2009 21:24
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I was just questioning when a starter is past its prime. It turns the engine over, I just can't tell if its just a little slow. Timing seems fine, but it takes about 6 to 8 seconds of cranking, with the engine warm, to start.
Anybody ever pulled the starter apart? How bad was it? Probable causes? Suggestions? I've got a couple of spares, one I know isn't so good.
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#1
by
the caveman
on 19 Mar, 2009 06:43
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Well on a TDI the starter must turn the engine at at least 300 rpms for the ecm to be able to fire the injectors, and when I were troubleshooting starting issues, I would often see 400-500 rpms. When you are cranking it should be turning quickly enough that you can almost can't count the compression impulses.
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#2
by
saurkraut
on 19 Mar, 2009 07:01
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Try running a nice thick wire from the negative battery terminal to one of the bell housing bolts. It might wake up your starter. The OEM grounds on these things suck.
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#3
by
AudiVWguy
on 19 Mar, 2009 07:18
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Sorry, forgot to mention welding lead fot the cables.Seperate ground on starter. Battery seems good, doesn't matter if I have a fresh batt jumped to it. I can easily count the turns as it cranks. Is the 1.9 starter more powerful than a 1.6? Compatiblity?
Thanks
-JB
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#4
by
saurkraut
on 19 Mar, 2009 10:20
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I seem to recall that a Eurovan starter will work. Its supposed to be the HD replacement for a diesel starter.
Oh, and change the starter bushing in the bell housing.
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#5
by
subsonic
on 19 Mar, 2009 11:08
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I seem to remember the older 1.6 starters turned over faster while the newer ones had some sort of gear reduction to give it more torque but less rpm. Anyone else recall this?
Ditto on the heavy guage wire to the starter and grounds. Solder the connections etc. Bushing while its out-yep.
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#6
by
AudiVWguy
on 22 Mar, 2009 19:31
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I found a guy on Ebay that has good used starters from 1.9. Can anyone confirm that this a better one than the 1.6. Otherwise, I have a used 1.6 of unknown age. Like everybody, if I have to replace a part, it would be nice to "upgrade" while I'm at it.
Thanks,
--JB
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#7
by
theman53
on 22 Mar, 2009 19:47
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I went to the parts store after many rebuilds and what a difference. Make sure to put the new bushing in ala Vince Waldon style.
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#8
by
AudiVWguy
on 25 Mar, 2009 21:24
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I had one extra starter laying around, put it in, starts way better. Thanks for everybody's help.