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1987 Nissan 300ZX - Page 2 Questions & Answers
No power to fuel pump relay
There is an emergency fuel pump safety shutoff in case of an accident that will automatically shut fuel pump off so fuel does not keep pumping out at the scene of a crash. The reset button is usually in the trunk depending on what vehicle you have. Your manual will identify location for you.
Low voltage
Clean all connections and make sure they are sound on both the battery and alternator. Electricity does not like to flow properly through dirty and poor connections.
If your alternator is not pushing charge at over +13V(sometimes over 14V, all depends) when the engine is running, then it is faulty. Take it back to where you bought it from and exchange for another.
If the alternator is fine whilst running and the battery shows 9V when the engine is stopped, then your battery is not holding the charge and is faulty. Take it back, same as if the alternator were faulty.
By rights, all things being equal, once started, your engine should run without the battery being connected at all, if your alternator is operating correctly. Your battery is only a storage device to initiate engine ignition. They are rated by CCA, which is simply crank power to turn the engine over and start.
Door rubber leaks
check the door frame rubbers. and the glass goes up full into the frame.
I have a 1987 300zx
It's possible the fuel filter is clogged up. If it has been a while since you changed the fuel filter, it may need to be changed. It is either located in the tank or between the tank and carbeurator. You may also have gotten bad gas or water in the gas. Check this also.
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