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I have a 260z thats wiring wise all stock. My fuel, clock and tach(sometimes) gauges all work. My voltage is stuck somewhere in negative so I'm not sure if thats electrical issues involving alternator but i don't mind that one not working. My oil and water gauge does not work. I have a newly bought oil sender, the bullet type water temp sender(is this the sender) with single bullet connector connected but the sensor next to it with two wires coming out isn't connected because they were cut completely off. I took off gauge and put battery + terminal to ign(G) and the black wire to ground. i then grounded my oil wire(Y/B) and it only moves to the 0 position. i thought it was supposed to move all the way? Is the gauge bad? Any help is appreciated as i really can't afford one right now and don't want to run my car without either of these gauges. Also how can i tell if my water pump is working? I have no leaks but i feel the engine gets very hot very quickly. I took the radiator cap off and i thought bubbles would come out or you would see the coolant flowing or moving but it was very still. I'm afraid thats also bad.
Inspired by the Head cooling on cylinder #5 thread (http://forums.hybridz.org/topic/59029-head-cooling-on-cylinder-5-solutions/), I decided to make my own diagrams of the cooling system for US Z/ZX L6 engines. I had to exaggerate and diminish a few proportions to maintain decent flow while using a flat layout. These charts are as accurate as far as my knowledge and research have shown so far. I will gladly accept any corrections and update accordingly. The year cutoffs are approximate and do not reflect all of the small month-to-month changes of course. On the ZX diagrams, some cars got the throttle body heaters while others didn't. I left them in both diagrams just to cover all the bases. I did spend a fair bit of time on these, so if they do happen to find their way elsewhere on the web, make sure at the very least to cite where they came from. Red = oil passages Blue = water passages and flow direction Yellow = direction of water flow in flexible hoses 1970-1974 240Z / 260Z 1975-1978 280Z 1979-1980 280ZX 1981-1983 280ZX