Plain Jane OEM nothing to see here rebuild

JustJeff · 06-19-2013, 11:16 PM

Here's the update and it couldn't happen in anyone else's build thread than mine.

I test my AFM and find that the IAT sensor within it is dead to the world. I have a spare N350 so I test it as good and pop it on. It's like night and day. Idle sounds much better. After a mile or so drive afr are sitting at 11.7 or so. I'm all happy and take it out for a long drive of blissful thoughts.

And then I burn up my EGI fuse a mile from home. I tried swapping bigger fuses just to get it home and burned up all of those. I ended up towing it home. So now I have to find my short. I've always been suspicious of the electronics in this car...and now I have some confirmation on it.

vrracing · 06-20-2013, 12:22 PM

Yes, the FSM refers to the connector I'm referring to as the "test connector" in chapter 4. If you search the club site for "initial set connector" you'll find lots of hits but it is referred to as "initial set coupler" as you can see in this thread.

And yes, you ground the ISC whenever you are adjusting your idle or setting your timing. Otherwise the ECU will fight with you.

Good to hear about the AFM. Bummer about the short.

Pete_89T2 · 06-20-2013, 02:52 PM

Quote:

Originally Posted by JustJeff

And then I burn up my EGI fuse a mile from home. I tried swapping bigger fuses just to get it home and burned up all of those. I ended up towing it home. So now I have to find my short. I've always been suspicious of the electronics in this car...and now I have some confirmation on it.

Definitly have a short. Look first for it in the areas you've messed with last. Sounds like you've spent lots of time under the hood and may have recently yanked the UIM a few times. One dumb mistake I made when removing the UIM was forgetting to reconnect the harness plug back into that ASV (air supply valve?). ASV is the PITA to get to one on the backside of the UIM, close to the firewall. When unconnected or not ziptied out of the way, that part of the harness is long enough to dangle down & hit the hot DP - instant 12VDC short on the EGI circuit when it hits the DP and melts the connector. In my case, the short was permanent since the melted plastic "welded" it to my DP, so it was pretty easy to find & figure out. If yours is just dangling, it might just be making intermittent contact as you drive around.

06-20-2013, 12:22 PM	#2
vrracing Rotating Assembly Join Date: Oct 2008 Location: TX Posts: 102 Rep Power: 18	Yes, the FSM refers to the connector I'm referring to as the "test connector" in chapter 4. If you search the club site for "initial set connector" you'll find lots of hits but it is referred to as "initial set coupler" as you can see in this thread. And yes, you ground the ISC whenever you are adjusting your idle or setting your timing. Otherwise the ECU will fight with you. Good to hear about the AFM. Bummer about the short. __________________ 90 S5 Vert. JDM Tii with BNR Stage1 turbo. Pineapple Racing street port. Bonez cat-forward. Corksport cat-back with Vibrant UltraQuiet resonator. RTek 2 wZeitronix w/b. HKS EBC. Vis CF Tii hood. 3000GT wing. Ground Control coilover kit with KYB AGX shocks. Red and Black leather RX8 seats. Corksport Odura lip & bumper caps, OEM Tii skirts