i plan on buy an Rsx tomorrow and we agreeded that the seller would clear out the check engine light, he was told that it was his primary o2 sensor, he ordered a new sensor and had it replaced, but guess what the engine light is still there. he claims they checked everything out and its still throwing the same code even with the new sensor, btw he does have an aftermarket exhaust. any1 ran into a similar problem? car runs fine and vtec still kicks in. you guys think i should purchase the car and take it to my mechanic?

 

People still do guess work? I probably wouldn't buy it; it sounds like he doesn't know what he is doing. If you really want it, take it to your mechanic and have the seller pay your mechanic to really fix the CEL.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AznInvasion &raquo;</TD></TR><TR><TD CLASS="quote">we agreeded that the seller would clear out the check engine light</TD></TR></TABLE>
Or he simply reset the ECU. Primary O2 is expensive.

 

unplug battery wait a couple minutes, drive like 20 minutes and see if it turns back on

 

That happen to me when i put my DC race headers but i put two defoulers and it fixed the problem there is a guide on club rsx

 

He still needs to reset it.

 

Whats a defouler(s)? Because I have a check engine light on in my ep3 and it says its the bank one sensor one, but I havent replaced it yet1 Is there a different sollution?

 

Look for this on the header. If it's not there, refer to my last post about the (lack of) knowledge the current owner has.

 

i had a dcrh also, put on a defouler and check light still stays on even on reseted ecu. I guessing my o2 can be bad, not sure but o2 is pricey.

 

One defouler or 2 like the picture I posted?