Stuble, stall, hesitation and power loss

[boostedpb03]

My cars SES appeared today and I obtained the codes,P0101,P0121,P0137 and I know the definition to them, my car literaly popped thes codes over night, running excellent the previous day, but now is running very rough with the above subject and including S/C boost gauge now rests at 0 and doesnt drop to -10 at idle and noticed a small exhaust leak, I have some leads and have know how my only problem at this point is I live at an apartment, my question to you guys is, how could this have happened overnight? any one have suggestions where to start first?

Any help would be much appreciated, thanks

[myfirstbonnie]

The boost gauge reading zero all the time is telling me you need to check the vacuum lines. Especially the tee under the SC snout. and at the map sensors between the SC and firewall.

[2000Silverbullet]

Blowing off a pressure/vacuum line is very common and usually happens under high boost situations.

[Archon]

As you know the definition of the codes, it would be helpful for you to post them so we don't have to go look them up.

[boostedpb03]

As you know the definition of the codes, it would be helpful for you to post them so we don't have to go look them up.

My apologies.

P0101

BORO or MAF/VAF sensor condition

P0121

TPS, sensor opened or shorted internally

P0137

circuit condition (heated O2 bank 1 sensor 2)

[00Beast]

Clean your TB and sensors, and replace your o2.

[Archon]

The PCM will be looking for certain values for the MAF and O2 sensors based upon the position of the throttle position sensor. If those values are out of range, due to unmetered air being sucked in because of a vacuum leak, those codes could be set. Couple that with your boost reading, the vacuum lines that Mike suggested would be a good place to start. If those appear good, check around the boost control actuator, and the multi-port vacuum connection on top of the supercharger.

[boostedpb03]

Thanks for the help, it was a vacuum line, fixed and running good again.

[Archon]

Great! Glad that it was an easy fix. Which line was it?

[boostedpb03]

Great! Glad that it was an easy fix. Which line was it?

It was the vacuum T under the S/C snout

[2000Silverbullet]

Was it the rubber tee itself, or one of the plastic lines that connects to it?

[boostedpb03]

Was it the rubber tee itself, or one of the plastic lines that connects to it?

Yes it was the tee itself, it was rotted and broke apart easily.




No mods other than a drop in K&N filter and a gutted air box,visual mods include tinted windows,an engine style red vinyl supercharged decal just above the embossed pontiac logo on the rear bumper and a red vinyl arrow head just below the XM receiver on the backlite,pirelli p zero nero 235/55ZR17 on an all optioned ivory white 2003 SSEi

[2000Silverbullet]

Very interesting. I'll have to check mine. I have an intermittent loss of MAP reading.

[Hawk1]

Great! Glad that it was an easy fix. Which line was it?

It was the vacuum T under the S/C snout

What is the S/C snout..???

Hawk1

[2000Silverbullet]

The snout is what the pulley is attached to and contains the coupler and the rotor gears/bearings.