WebAug 3, 2006 · After about 1 hour underway, the tach stopped. What happened is that the plastic tube came in contact with the manifold & melted. This in turn damaged some of the wiring it contained. I replaced the damage sections of wiring & solved the problem. Your wiring may be similarly damaged or they may have some corrosion. Check that out 1st. WebNov 17, 2024 · Issues with insufficient voltage can create a lot of problems for your tachometer. So, if your Mercury Outboard Tach is not working perfectly, start by checking the power output from the battery terminals. You just have to grab a multimeter and check the power output on the battery terminals.
Working on the Tach on my boat (Part 1) - YouTube
WebMay 3, 2014 · Make sure the outer ring has a good ground on it. Turn your key to run to power up the gauges. (you don't have to run the engine, just turn the key to run). Then, take the wire off the center post and ground it out by touching the outer ring. Remember low resistance to ground causes the gauge to read full. WebMar 4, 2024 · If the tach is working , but the wrong one (not a 20 pole tach) and it's hooked up correctly, it will work but it won't indicate the correct RPM. If it doesn't work at all, then I would suspect that maybe the tach wire is not hooked up, or like Jerry suggested, loose or corroded wires, or a bad tach. hyundai suv new launch
5 Simple Ways to Check a Tachometer - wikiHow
WebJan 16, 2024 · If your speedometer isn’t working properly, there are a few things you can do to test it. First, check the fuse. If the fuse is blown, replace it with a new one and see if that fixes the problem. If not, check the speedometer cable to make sure it’s connected properly. Finally, check the speedometer itself to see if it’s working properly. WebThe TACHOMETER gauge needs three things to work: 1. Source of pulses from engine sender; 2. Wiring connecting sender to gauge; 3. Gauge. It is unlikely, given your apparent unfamiliarity with the circuit, that you will be able to make repairs to the gauge portion, nor would most. These leaves two areas to inspect: the sender unit and the wiring. WebDec 23, 2024 · Installing and calibrating an outboard tachometer. Watch on. If the wires are melted, burnt, damaged, or frayed, it needs to be rewired with a new wiring system. When … hyundai suv price south africa