Buick lesabre stumbled, and i just bought it what's wrong?

Question:
i just bought a 90 buick lesabre roadmaster today. i test drove it yesterday and today it was fine. on my way home it started to stumble and almost acted like it wanted to die when I stopped twice. What could it be? it has 103,500 miles, new brake lines, gas lines, alternator. everytime i start it it starts fine. one thing i noticed was at first it said it was almost empty, but when I push on the gas pedal the fuel needle goes up to a quarter. is it out of gas? would that affect it only when it is stopped. please help.

Answers:

Is it possible for an altinator to provide to much power to the battery and if so how do you fix it?

I'm going to assume it's a LeSabre since I'm not aware of any Roadmasters made in 1990. Engine size? First, is it stumbling/almost stalling only when stopped? If so, have a look at the transmission fluid and go from there. Over/under the level could be a problem or anything on the dipstick will tell you something. Other things -fuel filter changed with gas lines? You could look underneath at the gas tank and see if their is a dent in it, I suppose if you were running below 1/2 full that could do something similar. More info would result in more conscise theories.

Colorado Will a old carburator 750 Honda run ok at altitude?

No...stopping your car shouldnt change what your gas gauge raeds...you have 30 days by law to return it (Lemon Law)...............RETURN IT!!!
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