FEOA Forums banner
1 - 10 of 10 Posts

·
Registered
Joined
·
618 Posts
Discussion Starter · #1 ·
I was just wondering if my car is OBDII compliant or not? I´ve heard that all 95´s are, I´ve heard that OBDII started in ´96 for our cars, and I´ve heard ´95 was a split year (OBDI at first, then halfway through the year OBDII was implimented).
 

·
Registered
Joined
·
94 Posts
On the inside of the driver´s side of the car, just under the dash, there should be a small trapezoid black connector. If you have one there, (most likely on the left side) then your car is OBDII.

93 LX, 16x7´s, Alpine head, Polk Speaks, JL 12´s

[ This message was edited by: Type_R on 11-12-2002 23:23 ]
 

·
Registered
Joined
·
389 Posts
Can anyone explain what OBDII means an also OBDI?
You lost me, and I´m sure not everyone knows.
Thanx!
 

·
Registered
Joined
·
618 Posts
Discussion Starter · #5 ·
OBDI - On Board Diagnostics ~generation~ one
OBDII - On Board Diagnostics ~generation~ two

Basically it´s a way to monitor and reduce the harmful gasses your car lets out through its emissions. OBDI cars have only one Oxygen sensor, before the cat, while OBDII cars have two O2 sensors, one before the cat and one after.

That´s the short version anyway.
 

·
Registered
Joined
·
389 Posts
Hey, does having the OBDII interfere in any way with going to a cat-back exhaust? Is that 2nd sensor located within the cat? If you removed or disabled either/both oxygen sensors, would that effect how the engine ran? Would the computer need a new chip or something to compensate for it?
Thanx.
 

·
Registered
Joined
·
34 Posts
The second O2 sensor needs to come after the cat. Eliminating this will cause your ECU to throw an error code. It will most likely cause your car to negatively adjust your A/F ratio. On my car I just lengthened the O2 sensor harness and placed it directly after the cat. It works fine like this and the ECU is happy.
 

·
Registered
Joined
·
389 Posts
Thanx AR. Doesn´t matter on my OMDI 94, but I was just wondering. Hopefully the next scort I buy will be a 96. Only if I sell one of these tho.
Again, really like your ride!
 

·
Registered
Joined
·
709 Posts
Ya know everyone tells me that taking that cat off will throw out a code but I drove my 94 gt around for two weeks with an open manifold. no codes and a heck of a lot more top end power.
 
1 - 10 of 10 Posts
Top