You need a good diagram of the ignition related components and a description of how they work together from a cold crank through to starting and running. The computer monitors the crank and start sensors and allows the proper signal triggers to the ignition module. A technician would use an oscilloscope to check for the proper signals at the ignition module input during cranking. You might consider changing the ignition module with a known good module. See if http://www.autozone.com has troubleshooting diagrams for your ignition system. Also check your public library for Motors and Chiltons repair manual diagrams and troubleshooting procedures. If all else fails, you can join the http://www.IATN.net professional technican network and search their data base for your make year model and all the ignition problems that have been solved.
Note that in general you can't crank the engine with the spark plug wires disconnected from the spark plugs because the high voltage spark doesn't have anywhere to go and gets reflected back into the coil and ignition module which can burn out both. Always use a spark tester and terminate all the spark plug wires before cranking the engine.
You need a good diagram of the ignition related components and a description of how they work together from a cold crank through to starting and running. The computer monitors the crank and start sensors and allows the proper signal triggers to the ignition module. A technician would use an oscilloscope to check for the proper signals at the ignition module input during cranking. You might consider changing the ignition module with a known good module. See if http://www.autozone.com has troubleshooting diagrams for your ignition system. Also check your public library for Motors and Chiltons repair manual diagrams and troubleshooting procedures. If all else fails, you can join the http://www.IATN.net professional technican network and search their data base for your make year model and all the ignition problems that have been solved.
Note that in general you can't crank the engine with the spark plug wires disconnected from the spark plugs because the high voltage spark doesn't have anywhere to go and gets reflected back into the coil and ignition module which can burn out both. Always use a spark tester and terminate all the spark plug wires before cranking the engine.
You need a good diagram of the ignition related components and a description of how they work together from a cold crank through to starting and running. The computer monitors the crank and start sensors and allows the proper signal triggers to the ignition module. A technician would use an oscilloscope to check for the proper signals at the ignition module input during cranking. You might consider changing the ignition module with a known good module. See if http://www.autozone.com has troubleshooting diagrams for your ignition system. Also check your public library for Motors and Chiltons repair manual diagrams and troubleshooting procedures. If all else fails, you can join the http://www.IATN.net professional technican network and search their data base for your make year model and all the ignition problems that have been solved.
Note that in general you can't crank the engine with the spark plug wires disconnected from the spark plugs because the high voltage spark doesn't have anywhere to go and gets reflected back into the coil and ignition module which can burn out both. Always use a spark tester and terminate all the spark plug wires before cranking the engine.
You need a good diagram of the ignition related components and a description of how they work together from a cold crank through to starting and running. The computer monitors the crank and start sensors and allows the proper signal triggers to the ignition module. A technician would use an oscilloscope to check for the proper signals at the ignition module input during cranking. You might consider changing the ignition module with a known good module. See if http://www.autozone.com has troubleshooting diagrams for your ignition system. Also check your public library for Motors and Chiltons repair manual diagrams and troubleshooting procedures. If all else fails, you can join the http://www.IATN.net professional technican network and search their data base for your make year model and all the ignition problems that have been solved.
Note that in general you can't crank the engine with the spark plug wires disconnected from the spark plugs because the high voltage spark doesn't have anywhere to go and gets reflected back into the coil and ignition module which can burn out both. Always use a spark tester and terminate all the spark plug wires before cranking the engine.
