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The computer uses Ion sensing to determine when the spark was fired. This takes the place of a camshaft position and ignition failure sensor to let the computer know where the piston and camshaft is in its rotation.
This is used to fine tune when the spark plugs are fired.
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Yes they are fairly common to fail as they have to be sensitive and be able to handle a secondary spike at the same time.
Do you have a code for the module? Ignition module?
That is pretty clear for the module. With the expense be sure you follow all the troubleshooting in the chart below
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Part number for the module is(NNN) NNN-NNNN/p>
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This is the ignition module you can see in the procedure below
On top of the intake at the rear of the engine
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If you have bogging on acceleration you can have a fuel delivery problem that is causing the misfire or it could be an ignition problem.
Do you have any test equipment? It is certainly cheaper to test than to install parts.
If you are not equipped with a way to test this it would be the least expensive route to pay an hour or two of labor to a shop that is equipped.
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