Re: 2.0l 1995 Cavalier with the X20XEV ecotec 16v engine (badge in grill version) After cleaning my Idle Air Control valve out yet again I am still getting the engine warning coming light on (most of the time, especially hot days). I pulled the code 92 with the trusty paperclip which states that it is an "incorrect signal from the camshaft sensor". I have found that by restarting the engine once it is warm that I can make it go away and then rev above 4500 rpm. The Haynes manual that I have states that the camshaft sensor is located "on the end of the cylinder head in the position normally occupied by the distributor". Since I have no distributor please can somebody point me to a picture of where this sensor is located on the ecotec engine. A search of ebay suggests that the camshaft sensor that I need is the new modified (bigger hole) part no 93171450 but there are only old 90458252 ones for sale just now. I expect that my sensor is fine and its the wiring that's gone, but until I can locate it I can't check that out. Can I buy just the clip on lead for the sensor? Also the warm air intake shield over the exhaust manifold has rusted so that the bottom support has come loose and is rattling while the top mounting star? bolts look rusted. If I try to undo them they are bound to shear off. The rattling is annoying, but from the noise the exhaust manifold could be leaking too. Any tips for a repair? Thanks Al