Question about 2003 Nissan Altima

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I bought a new battery and checked the starter and replaced the fuel pump. It will try and start but won't turn over.

Posted by Anonymous on

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  • Anonymous Aug 28, 2009

    The fuel pump includes the filter as one unit

  • Anonymous Aug 28, 2009

    The fuel pump and fuel filter are built into one unit. I replaced the fuel pump/ fuel filter. What else could it be?

  • Anonymous Aug 29, 2009

    Is it possible that the crank shaft sensor could be defective?

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4 Answers

Onifade Adewunmi

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Check the fuel filter for possible blockages.

the fuel system has some blockages.

Posted on Aug 28, 2009

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Remmy Moore

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Check the coil for a spark. The spark should arc between two points at least a half inch (give or take a 1/16th inch). If you aren't getting that much, you should begin you focus there. If the coil is too weak to do it's job, and the resistance in spark plug 3 is a little greater than the other plugs, it will lead to a miss. Based on what you have already done, replacing the coil would be my next course of action. The speed in which the coil fires is dependant on RPM of the motor. When cranking, the coil should only be firing roughly a few times a second since the motor is really only spinning at like a hundred RPM or so. If the arcs don't seem to be evenly timed apart, shorten the gap until you get a consistent rhythm, and if you are less than a half inch away at that point, the coils output is too low to run your engine effectively. The quicker the coil has to fire (higher RPMS), typically it has more voltage output, which may explain why the starting fluid trick worked, since starting fluid has a lower flash point. Another option would be to replace the distributor cap, and the rotor.

Posted on Aug 29, 2009

Testimonial: "When I checked the fuse box under the drivers side panel I didn't get any reading after I took the fuse out while I had the key turned on. Why ?"

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Ginko

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  • Nissan Master
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If starter motor does not engage , then check ignition, ignition switch and starter motor.

Ensure that fuses are ok.

If the starter motor is running, check if there is fuel pressure and if there is volts at spark plugs and injectors.

If there is no fuel pressure check fuel pump.

If there is no spark check distributor rotor.

If there is no spark and no power to injector check distribution coil.

A good thing to do would be scanning the car computer with an OBDII code reader, to pull down codes.
Fuel pressure can be read placing a pressure gauge between the fuel lines.

Often a faulty powertrain control module or ECM can also cause similar problems.

Posted on Aug 28, 2009

lee_annrozar

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  • Contributor
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This sounds like a electrical problem. This car has no distributor rotor, cap or traditional spark plug wires. It sounds like it could be a crank or cam sensor. Those 2 items control the timing of this engine and without one the ECM will not turn on the fuel injector's or the coil packs.

Posted on Sep 03, 2009

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Have you checked for correct fuel pressure? Most parts stores have a loan-a-tool fuel pressure gauge kit, and if you remove the plastic engine cover you will find a fuel rail port to attach the tester. Just because you replaced with new pump, don't assume it is good. Many cheap aftermarket pumps are noisy and fail often.

If pressure is good, insure you have spark to the plugs.

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if it wont turn over 1st check the ground s on the car and the battery 1st. your battery can be fully charged and the car will not start even over night this can happen. then look at the starter. Note: if you have over 109K on the car and the timing belt has never been replaced you will need to have this checked as well.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/tom_db3a51ff0ca57f20

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1990 Buick Century Limited 6cly wont start turn over or crank


Usually if the battery is dead, you will hear clicking. If the battery is good then I would check any Starter fuses/relays. If they are good then I would check for power to the starter solenoid. You can find many youtube videos on how to check this.


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My car won't start. The battery is good and the starter is doing it's job. The fuel filter has been replaced. The car will start with starter fluid and run when revved but won't start o


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I can't get my land rover discovery 1999 to start!I go to turn it over and it acts like it wants to start but it won't.I have replaced the fuel filter,the fuel pump,put a new battery in it,and a start


Sounds like a dead short between the starter and the battery. Check the cables under the hood for anything that has rubbed through.

However, it is more likely to be the control line to the solenoid that is shorting out. Trace that line from the solenoid up to the firewall first, than drop the panel under the steering wheel and look there. Use a multimeter set to ohms with one probe on a solid part of the frame and the other probe to the solenoid wire - there should NOT be any reading. If there is, the wire is earthing out

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Motor turns over won't start. Cleaned terminals, put in new battery, still won't start. Removed gas cap to vent air on hot day, still won't start. Lights all come on, all electrics appear to...


Your problem may be one of the following:
First check or just replace the fuel filter. Usually located under the car in front of the rear axle, drivers side.
Next, the fuel pump may be worn out. Usually they get loud or stop working (running).
Next, check the fuel pressure regulator. Usually located on the front fuel rail, drivers side.
Is the vacuum line attached? Not leaking or rotted?
Also, do you smell a strong fuel odor when it won't start? May be one or more stuck-open injectors, or the coil pack is bad.
Checking these in the order listed will more than likely fix your problem.
The clicking noise indicates the battery can no longer run the starter, which also means the fuel pump won't run either.

It could be a fuel issue. How old is the fuel filter? Can you hear the pump run for a few seconds when you turn the key on? Try turning the key to ON without trying to start engine three times waiting for the pump to stop running each time. Then try to start the engine. If it starts, Its a form of Vapor lock caused by the extreme heat we have had lately, and a weak fuel pump.

If none of this works, try a new fuel filter first. From there have someone check the fuel pressure regulator and then the pump. If you are in need of a new pump, take my word for it and spend the money to get one from a Dealer, and not from your favorite parts store. Most parts store parts are made in China and they are JUNK.

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Hello. My 1997 Chevy Tahoe refuses to start. The problems began with a bad fuel pump. I changed. It worked. The fuel pump died again. I changed it again and it has been working. I parked it for two weeks....


Now you have a good battery & a starter that turns over the motor

Have you cycled the key on & off with a fuel pressure gauge on the
fuel rail?

Do you have a fuel filter that isn't over 3 or 4 years old?

Have you checked for spark while cranking ? Use an old plug on the wires,
if you have ignition wires,don't ground the wire without resistance

If you removed the ducting & MAF Sensor it won't start

Tell us what you checked & exactly how that was done.

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