any ideas? I changed the o2 sensor last night. I had to strip the wire and solder the two wires together, and then wrapped them in etape.

I pulled the codes this morning
13,25,30,31,32,33,34,38


BTW: emissions are removed, as is ps/ac, Solenoids not hooked up. BAC removed, along with thermalwax. ect

EDIT:
13- Pressure Sensor [ why, its hooked up to the LIM and has vacuum??]
25- Pressure Reg Solenoid [expected]
30- Split Air Solenoid [expected]
31- Relief 1 Solenoid [expected]
32- Switching Solenoid [expected]
33- Air Bypass Solenoid [expected]
34- BAC [expected]
38- AWS Solenoid [expected]


So it appears that it had nothign to do with the o2 sensor at all. Its the pressure sensor thats kicking it limp mode?? Its hooked up though and shouldn't be causing a problem. Its hooked to one of the nipples on the passenger side of the LIM. The nipple faces the passenger front tire.

Thanks guys.

It appears as though the car is stuck in limp-mode. The solenoid that activates the 6port hasn't come online since the CEL started to come on.

The CEL comes on at half throttle, but at full throttle will blink intermittently.


BTW: TPS and timing was adjusted before a 1200 mile roadtrip last weekend. I had absolutely no trouble (or CEL's) until a couple days after I got back.

EDIT2: 90 GTU 5speed swap, no emissions n/a

 

Am I psychic or what? I told you it was the pressure sensor before I even saw this.

 

Alright... so how do i fix it. It goes directly from the LIM Vacuum nipple...

 

replace the sensor

 

mehhhhh

 

Reset CPU, added a couple solenoids back to the harness to keep them from flashing back

Results: Same, still getting intermittnent CEL
Codes:

13- Pressure Sensor [meh...]
30- Split Air Solenoid [expected]
31- Relief 1 Solenoid [expected]
33- Air Bypass Solenoid [expected]
34- BAC [expected]
38- AWS Solenoid [expected]


EDIT:

found the rest of the old solenoids, and PVC thing. Disconnected my e-aux ports (was using 6port solenoid) and reinstalled old solenoids (don't actually switch any air... all just hanging there).

Hoping that getting rid of some of these codes temperarily will get rid of some of these issues.


EDIT2:
disconnected battery and will take for a drive when she cools down, see how many codes are left. Stupid pressure sensor has me stumped though

 

I don't know 'bout the S5's, but the boost sensor code doesn't put an S4 in limp mode...AND, it comes on every time I dog it; with the open exhaust I have on the car (I'm guessing), it just trips it out, but it doesn't cause any prob's with the car...

 

It appears to be causing the 6port solenoid harness not to have its switching ground at 3800 (1/2+ throttle). I figured this was what was considered part of the limp mode. I didn't have this problem up until a couple days ago, really has me baffled. before the CEL would seldom come on... now its on between 1/2 and ~2/3 throttle... at WOT however the CEL blinks intermittently...

 

Put more stuff back on...:

13- Pressure Sensor [meh...]
30- Split Air Solenoid [expected]
31- Relief 1 Solenoid [expected]
34- BAC [expected]

Getting there...