I'm going to install a jetchip programmer
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2000 Mercury Mountaineer
Question: were is the engine control computer located
Answer #1Andy Y January 05, 2009, 13:23Master
Jet has instructions on their website to use their programmer.
You will need to copy/paste that link. The programmers plug into the Diagnostic port, most likely somewhere under the steering wheel on the lower dash.
I think the PCM is in the engine compartment near the battery. You can probably find some good info about the Jetchips from a Mountaineer/Explorer forum. Many people make good how-to write-ups on mods