What does code P1133 mean: 98 Saturn SW2?

Hi thee:
Check this possible causes:
- Air leaks present in the exhaust manifold or the exhaust pipes
- Fuel pressure is too high (i.e., causing a rich air fuel mixture)
- HO2S may be contaminated (due to improper fuel or silicone)
- HO2S signal high or low reference circuit has high resistance
- HO2S heater element has failed, or the heater circuit is open
- PCM has failed

Test wires and harnesses. Hope helps.

First, I wouldn't let that guy work on your car. P1133 is "O2 Sensor Slow Response - Sensor 1" Anybody that has been in the auto repair business for more than a week should know that Sensor 1 is ALLWAYS the FRONT sensor.

Note: O2 sensor codes do not necessarily mean that an O2 sensor needs to be replaced. Most O2 Sensor codes are caused by something other than the O2 Sensor itself. (there are several different possible O2 Sensor codes for your car. P0131, P0132, P0133, P0134, P0138, P0171, P0172, P1133, P1134)

The most likely cause of DTC (Diagnostic TroubleCode) P1133 is contamination of the O2 Sensor. Replacing a contaminated O2 Sensor without repairing the source of the contamination will only result in a repeat repair. It could be caused by bad fuel, improper use of RTV sealant, engine oil or engine coolant. I have seen this caused many times by engine oil leaks that run down the exhaust and clog the holes in the side of the sensor shield. (The sensor must "breathe" to work properly)

Then on the other hand, if your vehicle has a lot of miles on it, the sensor could be just chemically worn out. In any case, the FRONT sensor is the one that is setting the code.

try changing you crankshaft position sensor

YOU COULD BE RITE, ARE IT CAN BE MAP,OR AIR TEMPERTURE SENSOR OR OXYGEN SENSOR . IS THE CHECK ENGINE LITE COMING ON IF IT'S ONE OF THESE OR CATLYTIC CON. IT SHOULD BE THROWING CODE. INJECTOR'S MAYBE . IF ENGINE LITE ON PULL CODE'S FIRST.IDLE'S GOOD AFTER WARM?

the first thing you need to do is figure out what engine you have. there are only two saturn engine blocks 91-99. one is a DOHC for you a SW2 and the other a SOHC for you a SW1. The transmissions for the two engines are different, common mistake you should not make, different final gear ratios. When you find that out call a junkyard and they have interchange numbers to tell you which year saturn transmissions will fit, probably a 95-98 will go in.

P1133 is the code that tells you that your HO2S (Heated oxygen sensor) is not performing correctly. This can mean that sensor has failed to function correctly at least twice in a row and so the computer will store the data that occured the first time it failed and turn on the Check engine lite. Most likely you need a new Heated oxygen sensor.

Your O2 sensor is starting to go bad .recomend replacement before it gets worse

It is pretty straight forward. You need to drop the front portion of the exhaust, and remove the brace and torque converter dust shield. There is not a gasket. Just rtv. Honda bond works very well, about a 6mm bead all the way around.

your speed sensor is unplugged or defective

A jumper and a voltmeter u have to count the blips of voltage.
You can find it in any service manual.
Let me know i can get the info if u still need it?