pierce1 Posted June 27, 2011 Share Posted June 27, 2011 I have a 92 ls 400, the front y pipe needs replacing, which I haven't done yet. Several days ago my started to vibrated very bad at the gear shift and acted like it was missing. It does this at mostly low speeds. I thought it was the type of gas (using lower octane) so I filled up with premium and put fuel injector cleaner in it. It ok for a day or so and then started it again. I just put new brake rotors, and pads on the vehicle. Does this sound like a oxygen sensor problem? I'm going to get another ypipe from Rock Auto, my mechianc said to get a oxygen sensor also. What type of oxygen sensor do I need to get. Looked on the Rock Auto site, and am totally confused. Quote Link to comment Share on other sites More sharing options...
steve2006 Posted June 28, 2011 Share Posted June 28, 2011 Before buying parts at random,read the fault codes then you will have more of an idea. A faulty O2 sensor will not cause a misfire. If no codes are found a common misfire cause is one of the coil packs failing but again you will need to confirm before replacing. Quote Link to comment Share on other sites More sharing options...
pierce1 Posted July 16, 2011 Author Share Posted July 16, 2011 I bought 4 new tires and so far, (knock on wood) no shaking. Quote Link to comment Share on other sites More sharing options...
pierce1 Posted July 19, 2011 Author Share Posted July 19, 2011 Well I found the vibration problem. It was my drivers side brake caliper, the brake was locking up when hot. Quote Link to comment Share on other sites More sharing options...
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