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Re: Frustrated Technician - 2+3 Misfire 2001 4wd
Check the exhaust manifold for cracks. The manifold cracks quite often and SOMETIMES causes a misfire. Not quite sure why that happens but I've heard of it occuring at least twice.
You may need to check the primary wires to the coil to insure the ECM is pulsing it. The ECM itself provides the ignition pulse source.
If that's not the problem then other things to check are compression and fuel delivery.
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