Having problems with your 1994 Saturn Sl ?
1994 saturn sl 2 oxygen sensor light came on replaced it. now the code is saying the upstream oxygen sensor input volage above normal operating range???? and theres a bad odor coming from car???
It could be the oxygen sensors but when you said there is a bad odor I would bet that you have a bad EGR valve. It will send a code for the oxygen sensor if there is problems with the EGR valve. A lot of the time the smell is like rotten eggs when you have a bad EGR.
Repair Help & Product Troubleshooting for 1994 Saturn Sl
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