hi guys, my father's neon got some problems, few months ago we disable the O2 sensor, it was death and we just unplug the wire, the car was running fine, and a few weeks ago the car when im on WOT, dont run smoothly, and rarely but it happens the car do sum kind of explosion on the air filter! is a sohc what can be?

 

Can you explain the "exploding air filter" in more detail? Is it like a backfire that reaches the air filter? I'd fix the O2 sensor as a start. The car needs it to run completely "fine."

 

yeah, the backfire reach the air filter, but dont send me any error code!

 

I agree on fixing the O2 sensor and then see if that explosion happens again.

 

well i cant find the O2 sensor anywhere, this country is a crapp X_X.... but the car only have one O2 sensor!, my 1g 98 do not bringed the O2 sensor, and never did that!

 

hmmm I thought there were 2 sensors on the CAT. well on mine there is.. Now I really don't have much experience with the 1 gen neons though.. DarthRoush might know more on this one...

 

I think he knows where it is on the 2002 since they unhooked it, but I think he means his '98 didn't come with one? If it didn't come with one, then I'm sure it would be fine as the computer wouldn't need that information to run correctly.

If I am understanding correctly, you can't find a replacement O2 sensor in your country? You might just have to look around online and see who ships to your country. A backfire occurs when the A/F ratio isn't correct, which could be caused by not having the needed O2 sensor hooked up. The ECU uses the O2 sensor to determine what the A/F ratio is, and then make any adjustments necessary based on that information.

 

yeah bro i know that bro... in my 98 i change 3 pcm, 2 soch and now this one that i got is dohc, and nothing, no problem!..... yeah i cant find it, i live in venezuela and in here we dont find dollars, and just buy a o2 sensor, is more the ship cost that the sensor cost!... my dad dont changed the spark plugs.. do you think that the plugs are the problem?

 

I've already mentioned what I think the problem is. Just because the part is next to impossible to find, or expensive to get, doesn't make it not the problem anymore.

It wouldn't hurt to change the plugs, amongst other things. Preventative maintenance should be done at all times, to prevent a problem, not after a problem has occurred.

 

i gonna do dad! i bought the rc9yc but my dad didnt use it!, he say "bosh 4 electrodes are better" xD he is headstrong xD... thanks a lot bro!