HONDA CRX 88 SI Posted April 26, 2009 Share Posted April 26, 2009 I cant get rid off the code one thats been poping up in my car lately. Before with my other p28 chipped ecu it dint matter cause it dint need but now that i have a stock ecu it needs it i try putting in a new denso o2 sensor but still no signal. I checked all the wiring if it was correct and it is so i dont know what could it be one of my theories is that maybe i shouldnt put it in the front instead i should put it in the back at the end of the header. any input would be helpful. thnxz Link to comment Share on other sites More sharing options...
Kastigir Posted April 26, 2009 Share Posted April 26, 2009 O2 sensor belongs in the header/manifold at the collector. Is this a swapped engine? And just for clarification, you have cleared the code already...right? Link to comment Share on other sites More sharing options...
HONDA CRX 88 SI Posted April 27, 2009 Author Share Posted April 27, 2009 yeah i cleared the codes but they pop back up and what it is a mini me d16a6 block and a d16y8 head i though it could have been my ecu but i swapped them out and same thing so i dnt know it is kinda getting in my nerves lol. Link to comment Share on other sites More sharing options...
Kastigir Posted April 27, 2009 Share Posted April 27, 2009 Here is the procedure the Haynes manual gives me to test and resolve this problem. Turn the ignition switch to OFFRemove the Hazard fuse in the main fuse box Check the fuel pressure to make sure it's within spec If fuel pressure is ok, warm the engine to normal operating temperature Block the rear wheels and set the parking brake. Raise the front of the vehicle on jackstands With the engine warmed up, put the transmission in 2nd gear, and run the engine at 2k for 15 minutes If the check engine light comes on, or the LED flashes code 1, check for poor groundwire connections at the thermostat housing, or a loose connector at the O2 sensor If those are good, continue below Unplug the electrical connector at the O2 sensor, and connect a voltmeter between ground and the O2 sensor connector Warm the vehicle to operating temp, then hold the engine at 4k for 10 seconds, then allow it to return to idle. The voltage should stay at .6 volts while at 4k, then should not drop below .4 volts with a closed throttle If readings are too high or low, replace O2 sensor If O2 sensor tests correctly, have the system checked at the dealership Link to comment Share on other sites More sharing options...
HONDA CRX 88 SI Posted April 28, 2009 Author Share Posted April 28, 2009 Kool ill try that when i have time c whats up with it Link to comment Share on other sites More sharing options...
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