2 (two) Oxygen Sensor codes and a IACV code?
 

I am getting these codes on my car. I have a crx with a z6 in it with a 93 EX computer. I tried to find a vac leak with starter fluid but I came up with nothing. When it is really cold it will idle like it has a huge vac leak. But when it is warmed up it idles fine for a while. THen a little while later it idles really low. I have to advance it really far so I can have it idle at 600. I think that is due to the oxygen sensor codes but I have no idea what to do. it could be my wiring. Any thoughts?

Re:2 (two) Oxygen Sensor codes and a IACV code?
 

well i sort kinda fixed my idle. I found this little screw that stops the butterfly and I just screwed it in. It kinda bypasses the IAVC. It still warms up like usual but now I have a steady idle. I also turned my tps to the drivers side. I need to fix the codes. I hate going around stuff because I know I am loosing horsepower.

Re:2 (two) Oxygen Sensor codes and a IACV code?
 

the iacv cel could be a vacuum leak somewhere, i had that problem, have you messed with any vacuum hoses or your t.b. lately???

Re:2 (two) Oxygen Sensor codes and a IACV code?
 

Oh yeah :-\ I had a real bad vac leak when I first got it running. So I wen to go get a throttle body gasket but they didn't have one so I made one out of gasket material. I think it worked but it is a homemade gasket so that could be my problem. Also I was just messing around with my oxygen sensor wires and I am getting the codes for the oxygen sensor and the oxygen sensor heater. I put a test light up to the wires and I got power from only one. I knew that wast the heater but how am I suppose to know what other wires go where. And the guy at hodna today said that my IACV could be acting up cause of a bubble in the lines. I dont no. I wish my car would run right.

Re:2 (two) Oxygen Sensor codes and a IACV code?
 

dude, i had the same problem with my iacv, i took my t.b. off and reused the gasket (it was in perfect shape), but just the tiniest vac leak will cause it to act up. go order a t.b. gasket, it's like 2 dollars at advanced auto parts, they can usually have it the next day,i'm almost positive this is your problem. a bubble in your lines? you mean your coolant, if you think this may be it also (i doubt it), just burp your coolant, it only takes a minute, get a new t.b. gasket though, i'm almost positive that's your problem ;)

Re:2 (two) Oxygen Sensor codes and a IACV code?
 

Is there anything you have done to the motor?

Re:2 (two) Oxygen Sensor codes and a IACV code?
 

(((Update))) Today I found that my radiator was leaking and I put some of that stop leak in it. I used this kind that my friend used in his and his motor is fine so I used it. It stopped the surging. For some reason I think that if the coolant system doesn't have pressure it does that or something. But I did have to burp the upper radiator hose to get that stuff in so that could have fixed it. I havent reset my ecu yet but I am going to after I write this. I hope my IACV isn't bad. I will try to get my idle set right and then plug the plug in the IACV. Hopefully that will work!!!!

Re:2 (two) Oxygen Sensor codes and a IACV code?
 

Yeah I have rebuilt the whole motor. Bearings,polished crank, three angle valve job, new gaskets, and a mild port job(pretty much a clean up of the casting line and smoothing out).