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I have replaced head gasket, plugs , wires and catalytic converter and under load or in Park when you give it gas it losses power

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Location: Oregon
what is your fuel pressure? have you scanned for codes? what are your fuel trims looking like? What are your o2 sensors showing? Injector pulse width?

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Same exact problem i have. you figured it out?? Could it be a vacume leak clogged fuel filter injectors plugged i dont get it just can not figure it out

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