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I have a 94 Mercury Topaz that recently was exhibiting that symptom, but it didn't start until after a mechanic replaced my fuel pump. Apparently he installed a universal pump and may have damaged it upon installation. I put up with that for about 6 months until the car also started dying on hot days. A new mechanic installed a better quality pump, and now my car runs fine.

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Q: Why does your 1994 Mercury Topaz sputter at initial idle but run good after speed up I changed plugs and rotor and am going to change injectors next i also changed fuel filter?
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