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After replacing a fuel filter on my car yesterday I took it for a spin around the block and everything seemed fine. A few hours later I got in and tried to start it and nothing happened. The lights are on and the digital display lights up and the fans come on but I get no start and no crank. I ran for error codes and it flashed a code 16, meaning optispark. I can hear a clicking noise coming from the passenger side dash. Side note: I had to replace my water pump a few months ago and the optispark may have gotten a little wet but I spotted the problem pretty quick and got the pump out of there fast and after that I had no symptoms of a failing optispark. It seems likely that somehow the busted water pump must have dumped a little onto the opti, but I just don't understand why this happened so suddenly months later and with no warning.
So basically with a code 16 can I just pretty much assume i need to replace the optispark and not have to worry about anything else? Should I be checking anything else just to make sure?
What type of clicking sound. Is the car manual(could be a clutch start cancel switch next to the clutch pedal)? How is the battery voltage(could be the battery, corroded wires or the alternator)? Is battery voltage good(could be the starter, fuse or bad connection)?
The lights are on and the digital display lights up and the fans come on but I get no start and no crank. I ran for error codes and it flashed a code 16, meaning optispark.
So basically with a code 16 can I just pretty much assume i need to replace the optispark and not have to worry about anything else? Should I be checking anything else just to make sure?
No.
Yes, you should be checking a lot else. Before replacing any parts, you should follow a diagnostic process. It will save you lots of money.
Regarding the situation at hand; the opti unit has absolutely no affect or bearing on the symptoms you're describing. That is not to say that there is no problem with your opti, but the no start issue that you're talking about is something else. The engine will crank regardless of the Opti's functioning.
I'd start by testing for power at the starter while the key is in the "crank" position.
Regarding the situation at hand; the opti unit has absolutely no affect or bearing on the symptoms you're describing.
I'd start by testing for power at the starter while the key is in the "crank" position.