Sims or Sensors

[ellik]

Ok, time to fix the SES light. I have pacesetter headers, highflow cat and magnaflow exhaust, w/ o2 sensor bungs welded in the correct spots. Right now, they have plugs in them cause the threads to the sensors were stripped off getting them out. Need to get rid of the code because new emissions standards are based on codes, not a sniff test anymore. Should I

A) get a pair of sims (If so, give me source and brand)
B) get a new set of O2 sensors (source and brand)

which is going to be the cheapest, most likely cure to the problem?

[98Camaro3.8]

You say it plural, so are you running no O2 sensors at all?? You should only need 1 simulator, for after the cat. Before the cat, you must have the sensors installed.

[ellik]

why "must" I? there isnt one there at the moment? its plugged.

[Tru2Chevy]

The computer uses the sensor before the cat to determine how rich/lean the car is running. If you don't have one there, the car is prolly just pulling this data from default tables (not exactly sure of this) and you will not be making max HP.

The sensor after the cat is only used by the computer to make sure that the cat is working. They just compare readings from the two to make sure levels are lower on the second one.

Buy a new O2 for the front, and buy a sim for the rear (if ya wanna run w/o the cat) and all should be well.

- Justin

[ellik]

are the O2 sensors genaric (as in it doesnt matter if I put the post cat in the pre cat) or do you have to order it for the specific location? I think its the front one I messed up, so can I put the rear one in its spot?

[Lord_Verminaard]

Nope, they are all different. My rear O2 Sim didnt work, by the way. Still throws a SES. Oh well, just did emissions, wont have to do it again for four years. [img]smile.gif[/img]

Brendan
2000 Camaro L36 M49
84 Volkswagen Scirocco 8v

[ellik]

what brand sim did you use? I need to get this worked ot at least by end od summer since I will have to pass emissions which is now based on codes :rolleyes:

[2002firebirdguy]

I got the casper o2 sim and it didn't work