97 vtec coil arcing
#1
97 vtec coil arcing
Lookin for a little insight
My boss bought a 97 ex coupe VTEC from auction for a friends foster daughter to have as a first car. Upon inspection i discovered the car had, among other things, a blown head gasket, and repaired it. After reassembly, i was surprised to discover that with key on, engine NOT running, the coil is discharging, arcing to the distributor body to the tune of about once a second. Unplug the distributor, it ceases, unplug the vtec solenoid, it ceases, unplug crank/TDC sensor, it ceases. When cranking, it doesn't discharge at all. The head was stripped and shaved so the distributor was removed, but was never dropped/kicked etc. The car ran well before being torn down, despite having a blown head gasket. What could cause a coil to discharge without a crank trigger to open and close it's primary circuit? Any help appreciated.
My boss bought a 97 ex coupe VTEC from auction for a friends foster daughter to have as a first car. Upon inspection i discovered the car had, among other things, a blown head gasket, and repaired it. After reassembly, i was surprised to discover that with key on, engine NOT running, the coil is discharging, arcing to the distributor body to the tune of about once a second. Unplug the distributor, it ceases, unplug the vtec solenoid, it ceases, unplug crank/TDC sensor, it ceases. When cranking, it doesn't discharge at all. The head was stripped and shaved so the distributor was removed, but was never dropped/kicked etc. The car ran well before being torn down, despite having a blown head gasket. What could cause a coil to discharge without a crank trigger to open and close it's primary circuit? Any help appreciated.
#2
Is this a 4 or 6 cylinder accord?
The only way to fire the coil is to ground the negative lead. The wire you want to inspect is the blk/wht wire that goes from the negative side on the primary coil to the ignition control module.
Strange electrical problems can come from bad or disconnected grounds. Make sure that you reconnected all grounds in the engine bay. There are some by the upper timing belt cover.
The only way to fire the coil is to ground the negative lead. The wire you want to inspect is the blk/wht wire that goes from the negative side on the primary coil to the ignition control module.
Strange electrical problems can come from bad or disconnected grounds. Make sure that you reconnected all grounds in the engine bay. There are some by the upper timing belt cover.
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