Thanks for that tested maf sensor on real time data code reader it's ok as is gas tank pressure to be honest my mechanic said it could be the oxygen sensor before cat
Just replaced mine. Throws the code P 0133. If this is the problem, you'll find a wide range of prices at different stores. The prices I got were from $59.00 to $157.00. I couldn't find the oxygen sensor special socket I had used at another time so I used an adjustable wrench. You use different names for your tools over there, so I don't know what you call it. I have a '96 1.9 L.
@t-tony knows exactly what size wrench it is. I put the car up on ramps and crawled under. I tightened up on the sensor and tapped the end of the wrench back and forth for about 5 minutes, gently, and it finally began to move. After that, it unscrewed easily. There were two bolts that held the 2 brackets that supported the wire (one bolt for each bracket, I think either 10 or 12 MM.). After I took off the bolts, the wire dropped down enough to separate the electrical connector. Putting it back was just the reverse. It is recommended that you coat the threads of the new sensor with anti-seize compound before attaching it to the exhaust pipe. I was reading on another forum that several people kept getting the same code after the sensor was replaced. They went through hell looking at everything else since that sensor was new. It turned out in each case that the sensor they installed was the downstream (post) cat sensor that was sold to them incorrectly, instead of the upstream (pre cat) sensor. Once the right sensor was in the correct place, the codes no longer returned. Just double check, it you're getting a sensor, that they're selling you the Pre-cat or upstream sensor. Frankie