Re: 1998 explorer cranks but wont start. does this abt...
Had similar problem recently, turned out to be the fuel pump in the tank.
The garage can come out and check the fuel pressure should be around 40 psi without that it won't start, of course in your case it could be something different, just thought I'd pass this information on.
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The problem may not be with anti-theft but with a bad fuel pump,cam/crank sensor etc. Also, you may try unlocking the drivers door with the key. On most cars that is the standard method for disabling the security system.
you need wiring diagram as it look's that some wire has been damaged and and locate the wire and the exact location from where the wire is damage go to the given link and the repair manual with diagram http://toolsnyou.com/
if you have not changed the camshaft position sensor you need to do that sounds exactly like my problem got the new fuel pump and filter in there and it was fine for a month then same thing started happening again, been fine for 7 months since I changed my camshaft position sensor
Usually means the sensor in the lock cylinder is not reading the code in the key. If the pass key system does not get the right signal from the key the truck will not start. You might try taking the key off your ring - put it in the lock and turn the switch on - but don't crank it for at least a minute. There are procedures to reset the anti-theft online - - if you do a search for resetting anti-theft F150 you can read them.
Whats happening is your PATS (Passive Anti Theft System or security system) is not programmed and can't read the code that is being transmitted from inside your key. There is only 2 solutions to this and one is going to cost you money... sorry. We'll start with the free solution.
1. First thing is that you will need 2 keys that are or were programmed to your vehicle. You are going to have to cycle your keys and you cant fool the system by using only one. Insert the first key and turn it to the run position for approximately 6 seconds then remove it and within 5 seconds insert the second key and do the same thing. Pull that key out. Now your vehicle should start with both keys and the theft light should be back to normal.
If this doesn't work option 2 is you have to take it to a Ford dealership and they will have to fix it for you. Hopefully this isn't the road you have to take. I work at Ford and am one of the few in our dealership who program keys. All the best and I hope solution 1 works for ya.
The ECM or "computer" Thinks that the car is being tampered with. Therefore it has temporarily disabled the engine. All of this is controlled by the sensor in the ignition switch. Either this sensor has failed or the connection is bad. Be careful who you take this to because if there not familiar with this then it will rack up a huge bill just in diagnosis alone. That's before you figure in the price of the switch. Hope this helps. Good luck.
It sounds like the vehicle is in theft mode,did you use a different key? Does the theft light blink really fast with the key off?If the passive anti-theft system has been activated the computer will have to be reset in order to get the vehicle running again.
What does anti-theft light do when this happens with the key in the on position.Does it come on for a sec then turn off or does it flash rapidly? If it is flashing then anti-theft is not seeing your key for some reason.This could be a bad key or a transponder for the anti-theft.
Second thing it could be is maybe computer isn't seeing the crankshaft position sensor. When you first turn on the ignition your check engine light should come on.It should go out while cranking but if vehicle doesn't start after a few seconds of cranking,while the engine is cranking it should come back on. If it does then computer sees the crankshaft position sensor.If it does not come on while cranking then it does not see it and it will not start.If this is the case you can try and wiggle the wires to the sensor(it will be located next to the front crankshaft pulley and it reads the teeth on the back of the crankshaft pulley.