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Fuel Pump Upgrade

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    Definitely more work than is involved with the fuel pump upgrade this thread covers. Although an '89 TC would only involve physical modifications to mount the tank (including fuel line reroute) and the '90+ pump/sending unit electrical connector.

    Correct, the resistance range runs opposite for '90+ compared to '89-.
    Also for '88- digidash the high resistance value is something like 220 ohms instead of 160 for '89 TC and all '90+.

    From that post:
    Based on EVTM for '89 CV/MGM and '91 CV/MGM and some prior research

    For Analog clusters on '89 and down panthers (excluding '89 TC):
    Low fuel = high resistance = 60-86 ohms
    Full fuel = low resistance = 8-12 ohms.

    For all clusters on '90+ panthers (including '89 TC):
    Empty = 15 ohms
    Full = 160 ohms

    IIRC, '88 and down TC with digital cluster is something like:
    Empty is about 15-20 ohms
    Full is about 220ish ohms
    Last edited by VicCrownVic; 07-05-2017, 11:29 AM.

    ~ 1998 Mercury Grand Marquis LS - new DD
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