Question about 1998 Ford Explorer

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Engine turns over wont start

Is crank sensor failed

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  • creet1976 Dec 10, 2008

    engine does not turn over, but all of the lights and gauges work. Have replaced battery and starter. what could this be?

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It could be a number of problems .it could be a fuel problem. it could be the it does not have spark (the cylinders are not firing up. it could also be electrical problems. such as the coil, several sensors. you should have the car scanned. They will do a free scan at Autozone stores.the catch ? You have to buy the parts there.

Posted on Nov 02, 2008

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IF crank sensor is unpluged will engine start


No! If the crank sensor fails the engine will not start. The ignition module must receive a crank sensor signal for the engine to run.

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Wont start after running for a while. service lights work, radio, headlights but wont crank. just replaced starter, got new battery about a month ago. after 5-8 hours car starts with no problems.


Hot does make a difference. You say it won't start, but does it crank and not start, or not even crank? If cranks but will not start, any electrical part may fail as it heats, and when you shut it off the engine gets much hotter since coolant is no longer circulating. Thus, a marginal crank or cam sensor, or coil/ignition module may work while cold of while engine is running, but fail when you first turn car off.

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Typical of failing electrical motors or components. It does crank, just won't start? Likely gas or ignition related. Does the fuel pump still turn on when it won't start? Every time you cycle the key from off to on, the pump should come on for a couple of seconds, then turn off until engine is cranked or running. Bad pumps can stop when heated up. Check if you have gas up to the engine-have the fuel pressure checked. Correct fuel pressure is critical for easy starts.
Also check for spark when it wont start. If no spark, suspect the ignition control module or the crank position sensor.
Post back with what you find. The ignition module can be taken off and tested for free at a parts store. Some testing of the crank sensor circuit can be done on the vehicle, but requires a multi meter.

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Wont start it cranks but nothing happens.wont turn over. put a new what you would call distributor. still nothing.


If the Starter isn't turning the engine over, but you hear a clicking sound, you may have a bad Starter.
If the Starter is turning the engine over, but you are getting no Spark, you may have a failed Camshaft or Crankshaft Position Sensor, or your Timing Belt may have jumped or broken(common on the neons).
If the Starter is turning the engine over, but you are getting Spark, you may have a failed fuel pump, fuel pump relay, or fuel pressure regulator.

Before you start replacing sensor, double check the Timing belt to ensure it hasn't broken or jumped, and check to see if you are getting a spark or not.

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being 94' im sure it has high miles, cam and crank sensor common to fail over time do to wear and heat exposure. check the basic, make sure you getting fuel and sparks. fuel pump only work as long the engine is turning over due to the crank sensor sense the flywheel turning. crank sensor may be faulty. no sparks, check coil make sure is good and putting out 12v, auto zone can test it for free. good coil, than check cam sensor, cam sensor senses the cam turning and tell the ecu to tell the coil to disperse the sparks to the plugs. cam and crank sensors, there no way of testing it but replacing the unit unless you have the special equipment to test it; both is fairly cheap to replace, check ebay.

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