89 300e. Could someone point me in the right direction? I need to know where the following two parts are located: engine temp control sensor (I've been told rear of engine, drivers side, but I can't seem to find it) and idle control sensor. Also, does the OVP simply unplug from its harness, or is it held in by a screw or anything (on the harness end)? Thanks in advance.

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1989 300E 144K