Losing volts

[brian perri]

I have a 1971 penn yan with a 302 merc. put new gauges in it. Now every time I give it gas I lose volts I can watch the meter go from about 12 to 0 every time I give it gas ?

 

[KaGee]

Re: Losing volts

You have to get yourself a hand-held digital volt/ohm meter. Measure voltage at the battery for your true reading. My best guess, you wired it wrong or have a bad connection.

 

[Peter J Fraser]

Re: Losing volts

Or the gauge and tank unit dont match. Some tank units have the reverse winding of the coil so it must match the head unit.<br /><br />Regards<br /><br />Peter

 

[brian perri]

Re: Losing volts

DO not understand what tank unit is please explain

 

[Dunaruna]

Re: Losing volts

Brian, Peter is referring to the fuel gauge/fuel sender. Could you tell us what gauges you replaced, specifics please.<br /><br />Aldo

 

[MBDETAIL]

Re: Losing volts

geez I didn't think the gas sending unit had to match for the voltmeter to work??

 

[brian perri]

Re: Losing volts

I replaced water, oil, volts,rpm's there is no gas gauge thanks for all your help in this matter

 

[Dunaruna]

Re: Losing volts

5.7Lomc_bayliner, <br /><br />When I first read Brians' post I took it to mean that "give it gas" meant filling the tank, Peter probably thought the same.<br />Brian said in his first post "put new gauges in". Peters' reply assumed that included the fuel gauge - a fair assumption.<br /><br />Brian, I agree with KaGee, wiring is screwed up somehow. Use a digital volt meter to test your connections including any earth connections.<br /><br />Aldo