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09-02-2008, 02:02 AM
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#1 | |
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AF Newbie
Join Date: Sep 2008
Location: Bismarck, North Dakota
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1993 Lumina won't shift down into first gear.
My 1993 Lumina won't shift down into first gear. At stoplights it starts in 2nd. Really cuts into the old fuel mileage. Great for icy roads in the winter but I'd like to fix it. Reaaly like the car. Any ideas. When it first did this I immediately changed fluid. I started shifting down then. But a couple weeks afterwards it quit working correctly. I've been running like this for years. It will NOT manually shift in either. Tried a hundred time but I swear I can hear a click coming from somewhere. Any and all help is greatly appreciated. Car has 120 K on it.
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09-02-2008, 03:39 PM
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#2 | |
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A990 racer
 Join Date: Mar 2002
Location: Chestertown, New York
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Re: 1993 Lumina won't shift down into first gear.
Is this the only issue, you have4th and lock up convertor operation, 4sp o/d I assume?
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09-02-2008, 08:19 PM
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#3 | |
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AF Newbie
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Re: 1993 Lumina won't shift down into first gear.
Yes sir thats the only problem. It is a 4spd trans.
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09-02-2008, 08:32 PM
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#4 | |
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A990 racer
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Re: 1993 Lumina won't shift down into first gear.
Start by checking vacuum to the modulator on the l/s front of the trans, after that it may be internal.
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09-03-2008, 12:53 AM
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#5 | |
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AF Newbie
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Re: 1993 Lumina won't shift down into first gear.
Is there supposed to be vacuum there all the time? What does the modulator control? Thanks
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09-03-2008, 07:15 AM
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#6 | |
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A990 racer
Join Date: Mar 2002
Location: Chestertown, New York
Posts: 17,051
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Re: 1993 Lumina won't shift down into first gear.
Yes vacuum is always present, controls shift points, usually this will not cause what you describe though.
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