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Posted on Aug 07, 2009
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Have code p1391 and p0340, replaced both sensors and still have same problem. lots of backfiring and hesitation and raw gas out the tail pipe. Put oscilloscope on crank and cam sensor signals. loosing crank signal intermittently tried another sensor from dodge and still have same problem. replaced sensor plate in between flywheel and engine crank. Still have same code and problem. Took reading on sensor wire on the sensor itself before the connector to the engine harness. Still loosing signal. 5v ref steady .Help me plz. Joe

  • Anonymous Mar 25, 2014

    Truck threw a P0340 Code replaced Cam Position Sensor now getting P0016 code saying that Crank and Cam misaligned?
    2010 Dodge Ram 1500 4X4 5.7 Hemi 69,990 mileage and has run perfect up to this point.
    Don't want to start replacing crankshaft sensor if a Timing chain issue

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david4411

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  • Expert 98 Answers
  • Posted on Aug 07, 2009
david4411
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Had similar problem with 99 ram. i made holes in crank sensor a bit bigger,removed rubber seal that sensor goes through in trans,installed 1 bolt and adjusted sensor back towards firewall and tightened that 1 bolt and its worked fine ever since

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0helpful
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I have a 03 ford ranger 3.0L flex fuel. Won't accelerate. Step on the gas and it just bogs.backfires no power and won't idle. IAC New .cam, crank sensors all new. Fuel pressure is 55 psi. Thank you.
It sounds like a clogged catalytic converter .
From what you said you have checked all the right things and did the right tests and it all sounds good.
But if the exhaust gas can't get out the engine will not run over 20 to 30 miles an hour .
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Apr 06, 2018 • Ford Ranger Cars & Trucks
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How do I fix my car?
Code 340 is a cranking code for the cam sensor that's not working and the1391, it shows intermittent signal. Check the connections and change sensor, make sure it doesn't touch the cam. If your belt is old you should check it too. Good Luck
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Code P1391 & P0340
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    What are these codes? P1391 and P0340?
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    I have a 03 ford ranger 3.0L flex fuel. Won't accelerate. Step on the gas and it just bogs.backfires no power and won't idle. IAC New .cam, crank sensors all new. Fuel pressure is 55 psi. Thank you.

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