Evan Purple240zt Posted June 16, 2008 Share Posted June 16, 2008 Your welcome, good luck with everything. I am not sure how to do the diagnostic actually. I use an apex'i power FC so I can see everything on a laptop. Evan Quote Link to comment Share on other sites More sharing options...
Ben Posted June 29, 2008 Share Posted June 29, 2008 All RB 02 sensors seem to be the same except for RB26. .............. Except that's the picture of the factory Cat overheat sensor... The O2 sensor is located right up near the engine, and it is the same for all RB25ET's at least (22690-83T10). Quote Link to comment Share on other sites More sharing options...
Careless Posted June 30, 2008 Share Posted June 30, 2008 yeah it just said "sensor" as part of the description, but I'll trust you know more than I do about the factory system. Quote Link to comment Share on other sites More sharing options...
getoffmyinternet Posted November 10, 2008 Share Posted November 10, 2008 Wow, sounds like we had the same problem. Any new info, is it all squared away now? One of my mafs was connected wrong like yours and it was hunting and running very rich. After I fixed the wiring, it ran better but my plugs were all fouled up. That maf is running like the other, so I think it survived the faulty wiring. I'm thinking the o2 sensors may be fouled as well since I ran it for a while at such a rich state. Now it's running slightly lean. I trust my fuel pump, but I did take off the aac once too, so I'll have to check for vacuum leaks as well. Quote Link to comment Share on other sites More sharing options...
Canadianz Posted November 10, 2008 Author Share Posted November 10, 2008 Hey, yeah we have the car running great now, it was in the end the MAF was incorrectly wired. Also we shot the car with a timing light and it was a bit retarded so we advanced it and it helped a ton too. If I were you check first that your MAF's are clean and wired correctly. Next check for any boost leaks and make sure your vacuum lines are set up correctly. We had a POS china blow off valve that was leaking too and caused some trouble. Next make sure your FPR isn't set too high and that it has the correct vacuume reference too. Finally check your O2 sensor. A couple guys on this board mentioned to me that the MAFs are used when on boost. So if your AFR is okay under boost then that means they are functioning ok. The other thing is make sure that your idle air control is wired correctly and has the correct hose/ vacuume line routing. Good luck ! You'll track it down its just a matter of time Chris Quote Link to comment Share on other sites More sharing options...
getoffmyinternet Posted November 10, 2008 Share Posted November 10, 2008 Yeah, I wasn't sure how to check for vacuum leaks but I learned a new trick for it. I'll definitely have to check my bov because it is generic, I don't think it is this problem but would be very inefficient if it were leaking as well. That's interesting about the mafs, I'll have to look into it. BTW, you said you were looking for a way to read trouble codes earlier right? If you have the odb1 plug still in your harness (or you can buy one if you find the wires) you can get the nissan consult cable and the datascan software to not only read codes but troubleshoot, test, and somewhat tune from a laptop. I'm at the end of wiring everything and looked into getting the check engine light to work just the other day and found the cable on ebay for under $200. Quote Link to comment Share on other sites More sharing options...
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