My '98 Windstar (3.8L Engine) has a code P0174. The guy at Autozone says it needs a new oxygen sensor. Before I continue, I want to make sure I'm doing the right thing.
The van runs fine, but has been been a little hard to start since the CEL came on.
The van recently had the head gaskets changed and upper/lower intake manifold gaskets changed. This was due to coolant getting into the cylindars (white smokey exhaust). Wiswind said on an earlier thread that coolant can ruin the oxygen sensors.
Since the P0171 code was NOT present, should I go ahead and change out the oxygen sensor? I've not done any other preventative maintenance (cleaning the MAF, changing the PCV valve, etc.).
Thanks a ton!