code 0340

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July 2nd, 2010, 10:16 PM

4greens

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code 0340

1998 express 5.7 throwing 0340 code
replaced cam position sensor and crank position sensor
still getting code
getting misfire in engine when cruising at a steady speed
don't notice anything during acceleration or deceleration
thanks

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July 2nd, 2010, 11:07 PM

maxxman04

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maybe check connections and wiring, make sure it's good. i've also HEARD a blown fuse could cause this. also defective computer might.

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November 20th, 2010, 11:32 AM

4greens

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checked wiring and connections.stumped, took to local shop .
turned out to be the computer.

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