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Car Forum / Nissan / Nissan Z Cars / July 2005Electrical problem?
Heres the back ground to my problem. I purchased a 1985 300ZX in great condition in 1986 from a friend. Every fall I stored it and removed the battery and placed it in my cellar on a wooden board. Every spring I hooked up the battery and off I went never having a problem. This spring I hooked up the battery and nothing happen so I charged up the battery and finally got it started but none of my gages worked including the tachometer. I drove it up and down my street and they would work occasionally. I had the battery test and it is in good condition. Im not sure if this is associated with the problem but the womans voice who tells your your fuel level is low or the doors are opened worked occasionally since I purchased the car. Consumer Reports (when they listed the car) always had a poor dot in the electrical system. Im sure that there are a number of things that could cause this but Im wondering if its the alternator is gone or a short in the wiring? Someone indicated that it could be a fuse link. Any one care to suggest whats could be the problem. I appreciate your help. I am not the expert on this but I will try to help as I am new to Nissan as well. 1/ Measure the voltage across the batt terminal with engine off. Record the voltage. 2/ You can measure the voltage across the batt terminal while the engine is running. If you have something like 13.5- 14 volts. 3/ If there is an increase in voltage while the engine is running, you alternator is still okay that means no short and all electrical wires relating to the charging system is okay. I have read and spoken to other who has reported the problem as well described here. They often said it is relate to the charging system or power supply for digital dash. So make sure focus in this area first. Coincident but I am having an alternator problem as well. I don't have digital dash so I can't share my experience with you. > Here's the back ground to my problem. I purchased a 1985 300ZX in > great condition in 1986 from a friend. Every fall I stored it and [quoted text clipped - 16 lines] > > I appreciate your help. Paul Thanks for responding. I will try what you have suggested. Even though the car does not have a digital dash I'm sure they both wired the same way. I would like to read your experience since we both have non digital dashes. If I get any information on this I will forward it to you. I hope you will do like wise. >I am not the expert on this but I will try to help as I am new to Nissan as >well. [quoted text clipped - 33 lines] >> >> I appreciate your help. Not a problem, I have confirmed that my alternator is bad. The two brushes are well worn out that is no longer making contact to my rotor. I have tested and confirmed that my stator and rotor isolation to ground are still good. I have two options. 1/ to buy another alternator and discard the old one. Cost is an issue. 2/ Replace the two brushes then have the alternator bench test or install in teh car and test. Remove the alternator is not a bad job. If you are organize and have few simples tools, you can remove it within 1 hr max. Paul > Paul Thanks for responding. I will try what you have suggested. Even > though the car does not have a digital dash I'm sure they both wired [quoted text clipped - 39 lines] > >> > >> I appreciate your help. What's the one thing all your gages have in common? They're grounded ,,,right? Is it probable that all your gages hot signals are bad at once? Or could you have a bad ground connection? Just a thought...... Randy, '87 non turbo auto w/digital dash > Here's the back ground to my problem. I purchased a 1985 300ZX in > great condition in 1986 from a friend. Every fall I stored it and [quoted text clipped - 16 lines] > > I appreciate your help. I have repaired my alternator. Had to replace the two brushes, a bit of cleaning and it is as good as new. The brushes part number is DA60 or DA45. DA60 is the right one (according to alternator repair shop. DA45 is slightly larger but can be filed down. These two brushes will cost you about 5 dollars. If someone needs instruction as how to test or to replace the brushes, let me know. > What's the one thing all your gages have in common? They're grounded > ,,,right? Is it probable that all your gages hot signals are bad at once? Or [quoted text clipped - 25 lines] > > > > I appreciate your help. |
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