opti spark
Re: opti spark
Took it back apart and very carefull rotated the shaft until it fell in without a bump from my hand started the car for a sec without the water pump this time it ran. Put front back on engine runs great thanks.
Re: opti spark
I did the same thing installed OPTI -SPARK .Car started without WPump on .Put it back together cranks won't start .No spark .PCM ok Cannot find anyone to help 1995 LT1 also no code show either . 3 weeks now no car ..
Re: opti spark
How did you scan it for codes? The 16-pin ALDL connector with the OBD-1 PCM can cause problems scanning it.
Did you check the harness connector for the Opti, damaged pins, damaged insulation, etc?
Did you check the harness connector for the Opti, damaged pins, damaged insulation, etc?
Re: opti spark
never unplugged the harness after it started
Re: opti spark
Just thought there might have been a chance you bumped it reinstalling the water pump.
Did you check for spark at both the plugs, and at the coil wire?
Did you check for spark at both the plugs, and at the coil wire?
Last edited by Injuneer; Aug 19, 2015 at 04:38 PM.
Re: opti spark
Faulty optical cam position sensor in the Opti would set codes DTC 16 and or DTC 36. 16 shuts down the fuel system and does not turn on the SES light.
If the rotor fell off (did you loc-tite the rotor screws?) you would have spark at the coil, but not at the plugs.
If the rotor fell off (did you loc-tite the rotor screws?) you would have spark at the coil, but not at the plugs.
Re: opti spark
thanks for reply


