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89 spark after head gasket change.

2204 Views 1 Reply 2 Participants Last post by  ImperialCrown
Really...I drove this car in my garage, changed a head gasket, put her all back together and no spark...WTH? new magnetic pickup under dist. Still nothing.
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Welcome to Allpar. Is the camshaft and distributor turning OK? Is spark the only missing ingredient?
Try this wiring diagram at Fig 62:
Make sure that you have the 12 volts at the Dk.Gn (or turns into Gy/Bk) out of the ASD relay to the ign coil with the engine cranking and battery 12 volts at the red wire to the ECM.
There should be either 5 or 8 volts to the various sensors and distributor pick up.
This is kind of a generic 1989 diagram, but the wire colors and ECM pinout should be pretty much the same. The Omni/Horizon is the AL-body.
Review all underhood wiring and connectors to make sure that nothing got unplugged or pinched during the head gasket change.
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