Question about 1998 Ford Windstar

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98 Windstar 3.8l code p0340 keeps coming

Code p0340 keeps coming up on my windstar. i've changed the cam sensor three times checked the voltage on the wiring and the car runs fine any ideas on what it could be

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  • ultvampslr
    ultvampslr May 07, 2013

    i work for autozone and have replaced the sensor because oe was melted also replaced the fuel pump because the pump died just trying to get the light off for inspection but after clearing the code it comes back on after about 25-30 miles

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  • Ford Master
  • 21,873 Answers

I'm pretty sure that sensor is a two wire, which produces an AC volt signal back to the computer. You would test it with an analog volt meter while the engine is cranking or running.
It could be a problem with the object the sensor is supposed to be "watching" such as the end of the cam shaft.

Posted on May 07, 2013

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Posted on Jan 02, 2017

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SOURCE: 2001 ford windstar code P0340 cam shaft sensor malfunction

You most likely have a 3.8 liter motor. You need to have a obd-2 diagnostic performed. Pep boys, Autozone, Aamco etc. can do this. (Ford also, but costly). If cam sensor failing, code will be stored in e.c.m, and data stream will prove out. The cam sensor failure is common on fords and they are usally available aftermarket (save a few dollars over O.E.M.) . If there is another problem, the diagnostic will help determine. Windstars are also prone to fuel pump failures and ignition switch problems.

Posted on Mar 14, 2009

motor1258
  • 6674 Answers

SOURCE: MY 98 FORD WINDSTAR STALLS WHEN I IDLE OR COMING

I'd be looking at removing IAC valve, and cleaning it out with throttle body spray cleaner, and checking mounting gasket as well. Usually some success with cleaning it & spray ports it came out of, but if not you may need to replace it.

Posted on Oct 12, 2009

bikinimechan
  • 220 Answers

SOURCE: 1998 windstar 3 litre number 3 misfire ,changed

did you leave your battery hooked up while you were replacing the spark plugs and coil and such? try resetting your ECM.

Posted on Jan 15, 2010

toneman2121
  • 775 Answers

SOURCE: I have a 98 Fordwindstar 3.8 . It failed emission

the input to the sensor must also be checked. this link provides some diagnostic procedures. diagnosis for camshaft and crankshaft sensors are similar, as stated in the article.

http://www.aa1car.com/library/crank_sensors.htm

Posted on Jun 10, 2010

  • 5522 Answers

SOURCE: 2001 ford windstar lx too much gas odor ,changed

You have an Intake manifold leak or a leak in the fuelpressure regulator or fuel line. Most likely you need to check the Intake gasket with a water mist or Carb cleaner spray on the seams. Either one will produce a change in the RPM while the engine is running.

Also clear your computer, which I hope you did after changing all the parts you put on the van. When you get a Vacuum leak in the Intake, the fuel is not drawn into the cylinders properly and the ECU thinks the engine is running lean. The ECU orders more gas and the fuel regulator keeps dumping more gas in the engine.

Now you smell the excess gas, but the priority sensor overrides any secondary sensor saying its rich. The Evaporative Emissions system is flooded trying to reduce the fumes. In the end, you smell the excess gas.

Now both Autozone and Oreillys do free scans and their scanner may suggest more than what your scanner is showing. Check your Intake first, then scan it.

Posted on Oct 20, 2010

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You most likely have a 3.8 liter motor. You need to have a obd-2 diagnostic performed. Pep boys, Autozone, Aamco etc. can do this. (Ford also, but costly). If cam sensor failing, code will be stored in e.c.m, and data stream will prove out. The cam sensor failure is common on fords and they are usally available aftermarket (save a few dollars over O.E.M.) . If there is another problem, the diagnostic will help determine. Windstars are also prone to fuel pump failures and ignition switch problems.

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for which code you want for you car model given by you.

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