KAE: How do you install resistor to remove CEL (code 35)?

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TDS
Posts: 291
Joined: Wed May 18, 2005 8:18 pm
Car: 2008 G35

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Ok i posted this in the KA forum but I never got a reply.

EGR was removed and hole plugged. I got the check engine light (its a calif. car) and just to confirm, did the diagnosis on the ecu which only threw code 35 (egr sensor)

I did a search and most posts were unclear. The only post that provided some details said to cut out the connector from the egr sensor and splice the wires to each end of the resistor. I am not very knowledgeable when it comes to wiring so maybe i missed something?

1/4 watt Resistors

Connector and wires that lead to EGR sensor

I took each end of the resistor and spliced them to each wire and then used black tape

I connected this back into the wiring harness and took off my neg. cable to erase the codes but I still have a CEL. Did i do this right

Thanks for the help


User avatar
TDS
Posts: 291
Joined: Wed May 18, 2005 8:18 pm
Car: 2008 G35

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bump

Explodicide
Posts: 14
Joined: Mon Aug 06, 2007 7:00 pm
Car: '95 240sx
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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.

Enlefo
Posts: 107
Joined: Fri Mar 25, 2005 2:03 am
Car: s14 zenki, black on black.

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I've had a 100k ohm resistor installed in my 95 with the EGR system completely removed and plugged for about 6 months now and it works great. No CEL's no problems. He's right, you need to reset your ECU to clear the codes.

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TDS
Posts: 291
Joined: Wed May 18, 2005 8:18 pm
Car: 2008 G35

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Thanks guys! I have 100-ohm so I guess I didn't pay enough attention to see that I needed 100K-ohm instead. I will try again and see if that works as well as properly erasing the codes.


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