280zdude
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Everything posted by 280zdude
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Good news I cleaned all the connections to the starter I first checked the voltage to the starter and was getting 0 to maybe 9 volts. checked the wires and connected to the starter one probe on the battery and the other on this wire. And saw low voltage cleaning them made the voltage go to 12.45. I took off each wire used some pb blaster and cleaned the mating surfaces, bolts, and washers. now I’ll be looking into why the coil resistor is not getting any power.
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Yup that’s the diagram I’ve been using to check the wires. Let’s see I’m trying to tackle one thing at a time first spark then fuel. Any suggestions on how to check efi if it’s connected properly. The tank is rusted bad sooo I was seeing if the car starts with some starter fluid before getting into that.
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Ok thanks for the reply’s I’ll do everything you guys are saying and try to take pics. and get back to you! At the coil there is no voltage. Red prob to the + of coil and black probe to strut tour. at the ignition switch. I connect the red and white wire to the red probe and the black probe to the body such as the door hinge bolt any bear metal under the car. Same goes for the black and white on the ignition relay.
I’m new to the z cars found an old barn find. Anyways I have no spark and this system seems like it would fix any wiring issues ups in the car. Question 1) does this basically delete the ignition relay? Question 2) with a multimeter i checked the (black and white wire) on the ignition relay and the (red and white wire )on the ignition switch and they are showing -12 volts. Does that seem off to you? Shouldn’t it be +12 volts. Question 3) The black and white wire which connects to the resistor is not getting voltage. Where should I check for continuity? or how do you think I should go about that? im guessing if I do the HEI it will allow me to by pass all the wiring that’s been messed with trying to figure out this situation to find spark. Sorry for reviving an old thread but you guys seems like you know a lot!
Hello everyone I had a question about voltage. I am a newbie when it comes to wiring and electrical but I did my research and read the forums. I have a 1977 280z and it looks like someone’s been in there trying to figure out the issue. Missing bolts etc. anyways with my multimeter I tested the coil and the resistor and voltage. the voltage was off.. well there was none with the key on the on position, testing on the first terminal on the resistor. so this is what I checked, I went to the battery and checked the cables those are good, car turns over. I looked at the wiring diagram and found the black and white wire that leads to the ignition relay. That wire read at -12.45 volts. As if I I had my wires crossed on my volt meter. Then I searched and found the red and white wire that leads to the battery. And again same thing that wire read -12.45.. I went back to the battery terminals and tested there and that was +12.45. Sooo my question is why is it reading as negative in the wires? Is this normal? Andy ideas as to why the black and white wire that goes to the resistor is getting no power..
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