1996 Mercury Mystique Pulsing Engine

1996 MERCURY MYSTIQUE
48,000 MILES • 4 CYL • FWD • AUTOMATIC
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JLMATHIEU
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When holding the engine RPM's up, the engine pulses high to low. At idle the engine runs smooth.
Jun 18, 2008 at 9:18 AM
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BLACKOP555
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i would suspect a possible vaccum leak, maybe a faulty fuel filter.

hows the air filter looK?
Jun 18, 2008 at 9:59 AM