Hey Metro,

Sorry to post about this issue again, but its still unresolved and I could really use all the help I can get.

The problem is:

I swapped my car (2005 Drive by Cable) from turbocharged back to NA and now my car is throwing a P0122 Code (Throttle Position Sensor/Switch A Circuit Low Input). I swapped everything back in stages and at one point, I don't know how, but I had the car running on a NA setup (intake and exhaust) with the 550cc injectors and 255 walbro fuel pump. The car seeemed to run fine at that point. I know it was dumb, but I had the car running like that for a few days. Anyway, the problem arised the minute I changed my 550CC injectors to OEM injectors. At this point, the car currently has a K&N Short Ram Intake, Tanabe Aftermarket Exhaust, and 255 Walbro Fuel Pump.

All current symptoms relate to a TPS related problem:
Rough/Low Idle
Surging
Stalling
No/Little Acceleration

So far I have done the following to remedy the situation:
Tested 2 sets of OEM Injectors
Replaced TPS with new TPS (Currently Reads: .35@Idle and 4.5@WOT)
Cleaned all wire connections
Checked throttle cable tension
Checked all vacuums lines

I have no clue what the problem is. I feel like I have a bad ECU or throttle body.

I haven't driven my S for weeks now and I'm dying of stress. I also need to use the S to commute on somedays of the week so I'm caught in a really tough situation. Please, if anyone has any insight or help it would be much appreciated. Thanks in advance.

 

PMed...ill likely be up your way this week...

 

It was a tough battle, but its finally over!!!

We narrowed it down and it turned out to be an o ring to the MAP sensor!

Thanks Billman, you are the best!

3 weeks of S2K withdrawal. I'M DRIVING THE S NON STOP MUAHAHAHAHA

 

Don't you hate that? All that headache for a stupid $2 item.

 

^Seriously lol, smh

 

Was the O-ring missing, ripped, or just out of place?

 

^It was missing...fell out when I moved MAP sensor back to stock location

 

good stuff