Our Explorer has been starting but occasionally won't start. We replaced the battery, the fuel pump, the starter, the alternator, had it on the diagnostic two weeks ago after it wouldn't start for 3 days, they said it was the positive battery terminal, replaced it, but it wouldn't start again today.
When it doesn't start have you tried to see what is missing , spark or fuel ? Pull a spark plug wire off of a plug an get a spark tester at the auto parts store . Hook up a fuel pressure gauge an test fuel pressure . When you find out what's missing look on youtube for video's on how to test ,fuel system or ignition system . Or Take your vehicle to a qualified repair shop.
SOURCE: Engine turns over but won't start / 1995 F-150
Sounds alot like the ignition sensor. In my old Chevys it was under the dist cap, mounted on the dist itself. Mine was flat, slightly curved rectangle shape, with two flat prongs coming out both sides. If it would get an internal break in it, you cant see it. I would have the same problem as you, part was only about $12. And comes out with unscrewing two screws.
Might want to give it a shot.
Your alternator might be bad also, or the crank sensor
Hello
The engine
and transmission in this cars drive train are fully
electronically controlled by a computer called the PCM (Power Train
Control Module). Whenever a problem like this occurs the computer
stores a record of the problem (there are of course some exceptions
to this, like the fuel pump, engine coolant temperature sensor and
MAF sensor for instance) in the form of a fault code in its memory,
to read these fault codes you must have the systems memory scanned
with a special tool. Once the fault code(s) are read you then must
perform the appropriate diagnostic testing to find and resolve the
problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN
HAS DIAGNOSED THE PROBLEM TO AVOID SPEDING YOUR HARD EARNED MONEY ON
PARTS THAT MAY NOT CORRECT THE PROBLEM
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