TheSecondTB

Hey everyone, i have a 96 Civic EX with a obdii d series "zc" stamped block with a d16z6 vtec head.. tried to take it in for emissions and they said the ecu was not ready and that i needed to try and find the drive cycle and complete it in order to pass. i searched the other forums but could not find any other on this topic. thanks for the help.

andyz

Get an OBD II scanner or have somebody scan it, and find out exactly which monitor is not ready.

EVAP seems to be a bear to get to test itself. Theres a ridiculous procedure I can paraphrase.

Fill gas tank between 60 and 90 percent full. NOT FULL
Let sit for 8 hours.
Make sure outside temp is between 20 F - 95 F
connect scan tool, then start and drive for 15 minutes.
keep speed between 50 - 70 mph, keeping a steady pedal foot, for 1 minute.
stop, leave engine idling
repeat, from start and drive.
check for EVAP ready to test with scan tool.

TheSecondTB

Alright thanks man, ill try to find someone with a scope

andyz

theyre like $20 - 50 on amazon. especially if you have a computer with a bluetooth, you can bluetooth into the adapter so theres no screen on the adapter itself. suuuper cheap...

TheSecondTB

What kind of scanner exactly sould i look for.. or are they pretty much all the same>>? sorry guys im new to all this. Again thanks for all the help!

andyz

OBD II, that's it. Any OBDII compliant machine will be able to read any codes , and report on whether the Monitors are ready.

It's probably easier to get one that has a screen, then you don't have to fiddle with the computer part. AFAIK, except in California, you can get Advance Auto, Oreillys, to scan it for you for free.

TheSecondTB

oh ok cool ill head to an auto store today.

TheSecondTB

went to Oriellys, the scan came up with nothing. then i drove it on the interstate and city for about 3 hours like the guy and everyone has told me to, went to try again and still the catalyst evap system and o2 sensor are not ready. what next?

TheSecondTB

ill attempt the evap as you stated before, in the morning. what about the other two?

andyz

catalyst and o2.

both tests: outside 20 f - 95 f.
warm engine, hold at 3000 until radiator fan on.

catalyst: drive 10 minutes on hghway, in high gear drive at 50 - 60 mph for 30 secs, close gas pedal 1-2 secs, then repeat 30s, close, FOUR times
check for ready.

o2: idle 5 secs, in high gear drive steady speed 50 - 62 mph for 2 mins
in high gear, close gas and decel for 5 secs, gas closed.
check ready

TheSecondTB

whats weird is that the guys at the auto store's scanners say that theres nothing wrong with the car. thanks tho, hopefully ill be able to pull it off

andyz

if there is nothing 'wrong' then it will pass emissions immediately.