Thread: TPI Tech gauges

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Does anyone know the ohm spec or where to buy a replacement? I understand TPI Tech is out of business and my temp sending unit has spun free inside the housing. I have their quad gauge set.

Originally Posted by old ford

Does anyone know the ohm range the TPI Tech temperature gauge operates within? When I called thier so called tech line the east Indian tech wouldn't give me the information and quickly hung up on me. Thanks,
Old Ford

Originally Posted by PA_Hotrodder

Does anyone know the ohm spec or where to buy a replacement? I understand TPI Tech is out of business and my temp sending unit has spun free inside the housing. I have their quad gauge set.

Welcome to CHR. In post #2 Marks914 shared that your ohm range should be 450 to 29.6, where 450 ohms is cold, 29.6 ohms is full range hot, and 175F is 99 ohms. I believe that's the "standard" range for US gauges. If it were me I would visit my NAPA store and check out their universal sender with an ohm gauge at the counter. Failing there I'd call Classic Instruments and see if they either have a sender that works, or can guide you to someone who might. Another option might be calling Summit Racing - they list about a dozen different senders, but their catalog does not give the ohm range.