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Throttle cuts in and out on highway. fuel pump has good pressure. mechanic says possibly the fuel regulator.

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when the car is hot? or cold? lights on? codes? what size is the engine? –  cinelli Jun 27 '13 at 21:21
There's also the possibility of throttle sensor, MAP/MAF sensor, coil, timing... need more info here –  Drake Clarris Jul 10 '13 at 5:13

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