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Re: how do i replace pick up coil on 89 chevy suburban
I believe you will have to disassemble the distributor and shaft assy to replace. honestly may be cheaper and easier to replace whole distributor (minus module) with good rebuilt. will at least save time and frustration if that is in fact what is wrong with it
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There isn't a camshaft sensor. The distributor has a control module and a pick up coil inside of it, 1 or both could be bad, it's usually best to replace both. Some parts stores can test them. The is also an Electronic Spark Control Module. I would check the pick up coil and control module.
The ignition modulator may have to be replaced, you can pick one up at Auto Zone and it's still pretty expensive so you may want to try the Salvage yards. The ignition modulator's are common interchangeable part for the GM line so you can get one from a newer car then your 89 cavalier. Good luck and hope this helps. I believe Auto Zone can also test the ignition modulator too, the modulator is what the coils sit on.
There are 3 possibilities. 1 the coil. 2 the ignition module. 3 the pick up coil. In my experience the ignition module is the most common cause. It is in the distributor held in with 2 screws. The coil and module can be tested at any parts house. Good Luck
check the voltage of the b+ terminal of the ignition coil (primary side) with a cheap multimeter while cranking. low voltage to the primary will cause low voltage on the secondary. also recheck all ground paths from the ignition module. ensure good connection from coil to module. note: new parts are not "known good parts" until it runs.--> IG.MOD.