How to change a pick up coil on a 1989 chevy 1500 350 5.7L
I have never chang a pick up coil before. I remove the distributor cap and rotator and I see the iron rod that the rotator sit on but I don't know what to do from that point. and will I need any special tools to do this. I have another question? I'm not getting any spark I change my coil, I change my distributor and rotator. Now I,m changing my pick coil. Do you see any other problems that is going on to stop spark.
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I had a 96 tahoe 5.7 that gave me hell with the Distributor sparking to the wrong terminal. These Vortec engines use computer controlled timing, but still use a rotating distributor to determine which cylinder the coil's spark goes to. Twisting the distributor does not set the timing like it did for older engines, instead it just sets where the rotor is pointing relative to the cap when the computer decides to fire the coil. Aligning the rotor to the cap's electrodes at the instant of spark is called having the cap "indexed" to the rotor.
In my case the distributor was a few degrees off after an intake gasket change. The engine ran fine for a while, but was always sparking off to one side of the electrodes in in the cap due to mis-alignment. After a while, that side of each electrode became corroded, and rather spark around to the far side of the electrode, it was actually a shorter path to the clean side of the next electrode over. This resulted in stumbling and misfires.
I rotated the distributor a few degrees toward the corroded side and changed the cap and rotor. The next cap and rotor went about 10k further before acting up. I rotated towards the corroded side again, and the same cap and rotor have been running ever since.
Scribe a mark on your distributor and intake for reference and twist the distributor a few degrees towards the corroded side of the electrodes in the cap as the cap sits on the distributor. Don't forget if you take the cap off and flip it upside down, then you need to reverse the direction you twist. You want to twist the distributor cap towards the corroded side with the cap sitting in place on the distributor. This will help move the cap's electrodes closer to the center of the spark-range (as the computer jockeys the timing around, where the rotor electrode points at the instant of spark moves).
look for the distributor,remove the 2 screws holding the black cap on, carefully pick the cap up and out of your way,don't remove plugwires from cap,as they can be mixed up easily. remove the rotor button on the top of distributor,it may just pick up or you may have to remove one screw at bottom of button to remove it.after you've removed the rotor button you will see a round plate that just sits in the bottom part of distributor pick the plate up gently,you will see an electrical plug that plugs it up, unplug it,you may have to pull up the rubber grommet that holds that set of wires in, just make sure when you install new one the rubber grommet will need to go back into that slot,it keeps water out of your distributor. the plate that you have removed is the pickup coil. thank you for choosing fixya.com
Sounds like an ignition module and/or a pickup coil. If there is injector pulse the pickup coil is working.
The ignition module is located on the side of the distibutor. The make a wrench that has both the socket and the torx bit all in one just to install one of these. The wrench should be available from the autoparts store you get the ignition module from. It will make install a lot easier.
Sometimes you have to rotate the distributor a little to get at the two bolts that hold the module to the distributor. Make sure you mark the location of the distributor before you rotate it so that you can but it back in exactly the same place.
Once the two bolts are removed gently push down on the module to disconnect it from the pick-up coil. Sometimes its nice to remove the cap to help line up the new one with the pick-up coil connector and make sure the pick-up coil connector is in tacked. It is not uncommon for them to crumble when replacing the module.
he pick-up coil/stator assembly is located under the distributor cap, and once the distributor cap is removed from the distributor, just remove the ignition rotor, and then simply un-plug the wire connector to the the pick-up coil/stator and then lift it straight up and away from the distributor, and when re-installing the pick-up coil/stator be sure to align the square tab and the rounded tab on the pick-up coil/stator to match with the distributor housing and with the distributor cap and install the ignition rotor and the distributor cap, and then re-connect the wire connector to the pick-up coil/stator.
You can change pick-up coil, you need to remove distributor (mark where rotor is pointing first) Then you need to remove pin in cam gear on end of shaft to remove gear so you can remove shaft from housing. Then you can replace pick-up coil. Install in reverse. Note when removing distributor rotor will move to the right as you lift distributor out, move rotor to right of mark you made when installing distributor back in.
Remove distributor cap, ( two screw ) remove rotor, sit under rotor, look's like a black cover, disconnect harness going to distributor, come right out, two hole's on pick up is what hold pick up in place with distributor cap screw's.