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Explodicide »
https://forums.nicoclub.com/explodicide-u72976.html
Mon Feb 18, 2008 3:00 pm
I've had the same problem on my '95 for a while. I was trying to fix the EGR system, but it turns out that the last owner was doing something weird, trying to bypass it but still pass a visual inspection (and messed them damn thing up), so I had to scrap the whole assembly.
I just found the wires in the wiring harness ('95 FSM page EC-7) that the EGR temp sensor runs through and installed the resistor between the 2 wires inside the harness sleeve right next to my ECU. Saved me a bit of trouble digging around in the engine compartment looking for the right connector (which, it turns out, the last guy pulled out).
Everyone's been saying to use a 100K ohm resistor, and that looks to be about accurate, according to the EGR temp sensor diagnostics part of the FMS (so 100 ohm probably won't work).
I can't say for certain if it worked yet, as it's only been a day since I installed it, and my car hasn't thrown a code yet. I know it WILL throw a code, as I'm missing my cat-back O2 sensor, so when it does throw a code, I'll be able to see if my fix worked.
Oh yeah, and you have to clear your ECU errors to get it to re-run the diagnostics. With the ignition 'on', go into diagnostic mode by turning the screw in the ECU, and then once it starts showing the codes, turn the screw for 2 seconds again to reset the diag. codes. This will remove all of the error conditions from the ECU, and you'll have to drive it a while to get the codes to show up again.
My suggestion: get your FSM, look in the section that covers the ECCS, and find out more about how the temp sensor is wired, and go from there. I'll post the results of my fix once I get some results.