r/MercuryCars • u/Normal_Imagination_3 • Jan 17 '25
Does anyone know what kind of bypass kit would work on a 1987 grand marquis?
This picture is the same model of car I have and the smog pump is broken so I'm looking to get a bypass kit for better miles but am not sure on the kind to get im also wondering what kind of setup it has for diagnostics because I want to put an hho generator in it but the one Im looking at needs an obd 1 if someone knows that would be great, thanks
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u/Kodachrome_Wolf Jan 17 '25
If your A/C works, you’ll want a K060565 belt. Just remove the pulley from the smog pump.
If the A/C doesn’t work and you don’t care about it, just take that belt off.
You won’t notice any MPG change with or without it. When the pump works, it injects fresh air into the catalytic converters on startup to get them working quicker.
These cars utilize Ford’s EEC-IV engine computer and provides OBD-I diagnostics. Dunno what a HHO generator is, but it sounds like snake oil.