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Old 09-22-2010, 09:25 PM   #12
David 93 SL2m
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Join Date: May 2000
Location: North America
Posts: 3,594

2004 VUE 2.2L
2007 ION-3 Sedan
Happy Re: Changed 4-cylinder engine oil, now have ticking noise

Oh, I just remembered something! A few months ago I had an idiot light come on and the code indicated the upper oxygen sensor was failing. I reset the code and after a few weeks the idiot light came back on. After doing this another two times, I replaced the upper oxygen sensor on the back of the engine at the exhaust manifold under the heat shield (and reset the code). No more idiot light.

I will check the heat shield above the exhaust manifold, the 3 bolts that hold it in place, and the new oxygen sensor. It could be that I disrupted something while changing the oxygen sensor. For whatever it is worth I loosened the old O2 sensor and tightened the new O2 sensor with a flare-nut wrench. It wasn't too hard to do, just a bit of a stretch from above due to its location.

I just think it is odd this diesel-like engine noise came out of the blue and coincided with the oil change.

∙ 2004 VUE 124K
∙ 2007 ION3 112K
∙ 1993 SL2 212K
∙ 1993 SC2 140K
∙ 1996 SC2 157K
∙ 1996 SC2 126K
∙ 2001 SC2, 145K
∙ 2002 L200 20K
∙ 2002 SL1 129K


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