Ok, I'm needing some help here because I can't figure it out. Let me say that before I touched anything, the car was idling fine /ubbthreads/images/graemlins/applause.gif
Last winter/spring I replaced the radiator, and I also moved the intercooler so it wasn't pushing on the bottom of my USDM bumper. In the process, I removed all of the intercooler piping, replaced the couplers with new ones from SiliconeIntakes, and put a HKS TB elbow on. After that, I did a boost leak test and I was getting leaks at the injector orings. The car has ECMLink and their SD setup that was installed by the previous owner and the MAP sensor was always just T'd into the brake booster line, which I didn't care for. I decided to remove the intake manifold and tap a new port on it for it. When I re-installed I used a new OEM gasket. Put in new injector o-rings, did the tb shaft seals. Did a boost leak test again and I didn't find any. Started the car, as its warming up, it idles fine, the second I touch the throttle it goes to crap.
A few days later I was driving the car and at this time, I got a check engine light for the coolant temp sensor. Drove it home and after I shut it off, it wouldn't start again. Check the wiring, and it had been soldered in several spots and had come loose apart. All the wiring was cracked and in bad shape at the thermostat housing and the O2 sensor (on the car side). I went to the junkyard, found some in good condition and replaced it. Started the car and now the coolant seems to be reading fine in link, but the idle surge is still the same.
Ohmed out the ISC and it checks out fine. I'm frustrated at this point, so I decided to remove the throttle body and make sure I didn't goof anything up. It still super clean, opens and shuts, nothing seems odd. I have it off so I decided to bottom out the FIAV, tapped and plugged the coolant lines on that, and installed a new ISC. Started the car, and its still the same.
So, not seeing any boost leaks, TB, FIAV & ISC should be okay, coolant and o2 sensor wiring should be good. I've attached 3 logs, one with the car starting this morning, quick one on the highway, and one in the parking lot at work. Things that I notice are off; I can't get my intake temperature to read correctly (it's not that cold here yet), my airflow per rev is high, and when I was idling in the lot, the front O2 doesn't seem to cycle correctly and it switches between closed loop and open loop.
I have to note, that at idle, the BOV is open and air is coming out. I would much rather it be closed, but it's on SD and I didn't change anything with the BOV so I'm assuming it was doing this before. It also seems to stay closed at initial startup until I touch the throttle.
Startup
Highway
Idle after Hwy
Last winter/spring I replaced the radiator, and I also moved the intercooler so it wasn't pushing on the bottom of my USDM bumper. In the process, I removed all of the intercooler piping, replaced the couplers with new ones from SiliconeIntakes, and put a HKS TB elbow on. After that, I did a boost leak test and I was getting leaks at the injector orings. The car has ECMLink and their SD setup that was installed by the previous owner and the MAP sensor was always just T'd into the brake booster line, which I didn't care for. I decided to remove the intake manifold and tap a new port on it for it. When I re-installed I used a new OEM gasket. Put in new injector o-rings, did the tb shaft seals. Did a boost leak test again and I didn't find any. Started the car, as its warming up, it idles fine, the second I touch the throttle it goes to crap.
A few days later I was driving the car and at this time, I got a check engine light for the coolant temp sensor. Drove it home and after I shut it off, it wouldn't start again. Check the wiring, and it had been soldered in several spots and had come loose apart. All the wiring was cracked and in bad shape at the thermostat housing and the O2 sensor (on the car side). I went to the junkyard, found some in good condition and replaced it. Started the car and now the coolant seems to be reading fine in link, but the idle surge is still the same.
Ohmed out the ISC and it checks out fine. I'm frustrated at this point, so I decided to remove the throttle body and make sure I didn't goof anything up. It still super clean, opens and shuts, nothing seems odd. I have it off so I decided to bottom out the FIAV, tapped and plugged the coolant lines on that, and installed a new ISC. Started the car, and its still the same.
So, not seeing any boost leaks, TB, FIAV & ISC should be okay, coolant and o2 sensor wiring should be good. I've attached 3 logs, one with the car starting this morning, quick one on the highway, and one in the parking lot at work. Things that I notice are off; I can't get my intake temperature to read correctly (it's not that cold here yet), my airflow per rev is high, and when I was idling in the lot, the front O2 doesn't seem to cycle correctly and it switches between closed loop and open loop.
I have to note, that at idle, the BOV is open and air is coming out. I would much rather it be closed, but it's on SD and I didn't change anything with the BOV so I'm assuming it was doing this before. It also seems to stay closed at initial startup until I touch the throttle.
Startup
Highway
Idle after Hwy