Gsmblue Posted February 1, 2019 Share Posted February 1, 2019 Today was an annoying day. For the last few weeks my tacho has been working, then when driving today it stopped working and the fuel gauge stopped working! All the other gauges work as normal. Where on earth do I even start. I have been looking at the 85 EVTM and I have cleaned the C208A connector with no change. So i am wondering what wires should I be tracing through which connectors or what components I should be testing if any. Any advice welcomed, as always! Link to comment Share on other sites More sharing options...
Gary Lewis Posted February 1, 2019 Share Posted February 1, 2019 I’m out and about, so a quick response now and another later. On the fuel gauge, pull the wire at the sender, ground it, and turn the key on. The gauge should slowly peg. If it does then you have a sender problem. Link to comment Share on other sites More sharing options...
Gsmblue Posted February 1, 2019 Author Share Posted February 1, 2019 I’m out and about, so a quick response now and another later. On the fuel gauge, pull the wire at the sender, ground it, and turn the key on. The gauge should slowly peg. If it does then you have a sender problem. It pegged! So I dug out the contact cleaner and gave the 208A connector a good wipe down, then pulled the nuts on the tach and cleaned the printed tracks, cleaned the nuts and put them back on making sure they got good contact. All working again! Thanks for the help!!! Link to comment Share on other sites More sharing options...
Gary Lewis Posted February 1, 2019 Share Posted February 1, 2019 It pegged! So I dug out the contact cleaner and gave the 208A connector a good wipe down, then pulled the nuts on the tach and cleaned the printed tracks, cleaned the nuts and put them back on making sure they got good contact. All working again! Thanks for the help!!! Yippee!! Glad it worked. Link to comment Share on other sites More sharing options...
1986F150Six Posted February 4, 2019 Share Posted February 4, 2019 Yippee!! Glad it worked. Just wondering. When the gas gauge and tachometer stopped working, you said all other gauges worked normally. Does your gauge package include dummy lights? Link to comment Share on other sites More sharing options...
Gsmblue Posted February 5, 2019 Author Share Posted February 5, 2019 Just wondering. When the gas gauge and tachometer stopped working, you said all other gauges worked normally. Does your gauge package include dummy lights? I’m not sure what dummy lights are... Link to comment Share on other sites More sharing options...
Gary Lewis Posted February 5, 2019 Share Posted February 5, 2019 Just wondering. When the gas gauge and tachometer stopped working, you said all other gauges worked normally. Does your gauge package include dummy lights? I think "dummy lights" are the PC way to say "idiot lights". Link to comment Share on other sites More sharing options...
1986F150Six Posted February 5, 2019 Share Posted February 5, 2019 I think "dummy lights" are the PC way to say "idiot lights". Gary is correct. The reason I asked re: idiot lights is that gauges which suddenly go dead can sometimes be caused by a sticking ignition switch. If the dash has idiot lights rather than gauges, this would not be so readily apparent. Link to comment Share on other sites More sharing options...
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