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Could be a bad coil, bad Ignition Control Module (what controls the ignition coil as commanded by the engine computer), or a bad crank position sensor, or cam position sensor. Or the wiring and circuits to all the ignition parts.
Often it is the crank sensor (CKP sensor)-The pcm must have this information from the crank sensor to determine spark timing. If no good signal from the crank sensor, there will be no spark.
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No Start No Spark Case Study 1997 Lincoln Continental 4.6 How to test a VR type crank sensor. (VRS) This ...
How do you know it needed a crank sensor ? Does it have spark , did you pull a coil if it has coil on plug ignition or plug wire an see if it has spark ? If there is spark you do not need a crank sensor ! Try spraying carburetor cleaner in the intake an see if it fires , if it does you have a fuel delivery problem ! An when you change a crank sensor you need to have a crank relearn done with a scan tool. not a code reader !
well if ur not getting spark and u changed all of the ignition components lets think about the computer in order for the ignition to work you have crankshaft position sensor that fires the fuel injectors and the spark change that and if still nothing then change the camshaft postion sensor that sensor tells the computer that the 1 piston has came all the way up and it tells the crankshaft sensor to do its thing
When it dies you need to figure out what is missing, ie fuel pressure, spark, tour are probly losing spark when it occurs pull of on of the plug wires at the coil and have someone crank the engine while you hold that wire 1/4 inch away from being plugged in not touching but close, see if the spark jumps this gap, of not you have either a failing coil pack, or a bad crankshaft position sensor, I would start with the coil, please rate or leave feedback good luck
Did you replace the coil because it wouldn't start before? If it ran before, there must be a mis-connection somewhere. I assume by your stating that 'it turns but will not crank', to mean that the engine will crank over with the starter but won't start and run. True?
. Make sure that the distributor rotor is moving when it cranks. check the cap and rotor for cranks. If all is well then change your module inside your distributor.
check the crank sensor. no signal from the crank sensor causes a no spark condition. best way to check is to put a scanner on and check for rpms.
the crank sensor is differnt from the cam sensor
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