Can a MAF be bad even if the code don't come up,and can it screw with the idling of car??? I sucked in some water threw mine,it put 33 code up..But the next day,it didn't show code again.It's been a week and still no code..Any way to check to see if it's working correctly.I have a scanner tool too.Also,code 42 (electronic Spark Monitor) is in the system.I have unplugged the timing connnecter several times to set base idling..Is that causing the code to come up??

Thanks