What all could cause a manifold pressure fault code?

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Engine has a really rough idle.I've already replaced the fuel pressure regulator, cleaned the throttle body, and replaced plugs and wires.

Weldernotmechanic1983 in Newport KY

Apr 12, 2015

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Tuffy Tire & Auto Service Center - Grandview

4.7

(85)

2.39 mi

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Closed

Opens 8:00 AM Tue

Call