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1999 Nissan Altima won't turn over. When key is in the run position there is a hum coming from the area where the engine and transaxle meet (seems to be more above the engine than below), and when the key is in the start position there is a buzz (I'm not sure where because I can't turn the key and be under the hood at the same time). The starter isn't turning at all, but the lights, radio, and everything are working. I tried to charge the battery with jumper cables from a running vehicle for over half an hour and it still didn't start. Autozone tested the battery and it's fine.
Re: 1999 Nissan Altima won't turn over. When key is in...
Check your starter. It could be that or the starter solenoid, or the ignition relay. Also check to see if the battery cable is connected tight to the starter.
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Could be a long list of things. A mechanic would take a test drive and listen under different conditions. Causes could include transaxle problems, exhaust rattles, worn motor mounts, even valves in the engine. The difference in idle and moving is a load on the engine and transaxle and the engine shifting position.
it is a fuel pump mostly but first check the fuel pump relay . then make that test for the pump to make sure it is bad unplug the fuel line (hose) from the throttle body tell a friend to make the key on position(not to turn it ) if the hose fail to squirt a dose of fuel then sure the fuel pump is dead
1997 Nissan/Datsun Altima 2.4L SFI DOHC 4cyl: the Throttle Position (TP) sensor
is a potentiometer. It is mounted on the side of the throttle body and
is connected to the throttle plate shaft. The sensor monitors throttle
plate movement and position, and transmits an appropriate electrical
signal to the ECM. These signals are used by the ECM to adjust the
air/fuel mixture and spark timing according to engine load. The TP
sensor is adjustable on some models. Automatic
transaxle/transmission TP sensors contain position switches. These
switches provide a signal to the ECM when the engine is at idle and wide
open throttle.
Very good possibility that the Fuel Pump has gone out.
Find the Fuel Port on the Fuel Rail going to the Fuel Injectors. Remove the cap. Pack plenty of rags or paper towels around that area. Wear goggles to protect your eyes from Gas Spray! Using another wadded rag or paper towel partially covering this port and a small screw driver - depress the stem inside this port. Have a partner turn the Key over attempting to start the vehicle. A strong stream of gas should come out.
If no gas is coming out: check the Fuel Pump Relay/Fuses. Use a Voltmeter to check for voltage at these locations. The reading should be 11+ to 12 -volts.
If there is Voltage: Again with a partner behind the wheel, remove the gas cap. Place your ear up very close to the Gas Filler Tube (where you put gas in). Have your partner turn the key over to the On (not Start) Position which is the position just before Start. You should faintly hear the Fuel Pump humming. Have your partner turn the Key to the Start Position, again you should hear a very faint humming (over the car cranking).
If there is not indication of humming: Jack-Up and properly support the rear of the vehicle with jack stands. Once again with a partner behind the wheel: go under the vehicle and place your ear up close or on the gas tank. Have your partner turn the Key to the On Position. You should hear the humming.
If not, have your partner turn the Key to the Start Position. There should be humming.
If no humming there is a great chance your fuel pump has gone out.
Based on your year (1994) this is highly probable.
HOWEVER: If there is humming, change out your Fuel Filter and recheck for fuel at the fuel rail.
Let me know if this helped or if you have additional information or questions. Feel free to contact me at Fix Ya.com!
The crank sensor is only a reference and shouldn't cause it not to start. I would look elsewere for your problem ie camshaft position sensor which is built into the distributor. This is amore likely cause of your no start condition.
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