Tip & How-To about 2002 Nissan Altima

Check Engine Light-Diagnose for FREE!

Here is a great tip to save you major bucks on diagnosis and repair! All late model automobiles are computerized. The fuel delivery systems, the spark control systems, the transmission, the anti-lock braking system, the electronics...and on and on are controlled by sensors, selenoids and computers. That troublesome light comes on, the car doesn't act quite right, the transmission is acting up...90% of the time, when you don't have a clue what is happening with your car, it can be diagnosed for free!!! Most national parts chains, such as Advance and Auto Zone, will read the codes and interpret them for $0 in an effort to sell you the sensor or the selenoid, or the part that is causing your issue!!! Most people RUN to their dealer and pay out major $$$ for a diagnosis and repair that you could take care of yourself for a fraction of the cost! So if you are having issues with your car or truck and need some help, try this simple and FREE diagnosis advice first and you will save yourself money and heartache!

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1 Answer

It will start, but dies when I try to increase speed.


It should go without saying that you will need to include the YEAR, MAKE, and MODEL of your vehicle in order for a diagnosis to be suggested.

That being said, I suspect a fuel delivery issue. Have you changed the fuel filter lately?

May 13, 2015 | Cars & Trucks

1 Answer

injectors


There is basicaally only three things that can cause this:

>FUEL
>IGNITION
>COMPRESSION

he fuel system consists of two major systems: The fuel DELIVERY system and the fuel INJECTION system..Unless we are talking about an old vehicle that is equipped with a carburetor. (You did not mention what type of vehicle - which would be nice if you actually expect somebody to help you).

The ignition system is the spark plugs or glow plugs and all the other related components like the coils, wires distributor cap, rotor, distributor etc. Again, what components your vehicle is equipped with depends on the vehicle.

Compression is pretty much a mechanical issue - bent, burnt, broken valve train components, worn out piston rings, blown head gasket, broken timing chain or belt, etc.

The first thing you must do is determine which of the three basics is missing. Most modern automobiles have computers that control the fuel and ignition. To properly diagnose those systems on most vehicles, it is necessary to scan the onboard engine control computer.

Apr 11, 2012 | Cars & Trucks

1 Answer

I have already checked the fuses & banged on the motor to no avail...what next?


You could try diagnosing and repairing whatever problem you are having by using methods prescribed by automobile repair industry standards. (Which, incidently, do not include "banging on motor")

1. Define the nature of the problem: What is the vehicle doing or not doing that indicates that the vehicle is malfunctioning?

2. Isolate the system: Which major system is malfunctioning? Is the problem being caused by the ignition system, The fuel delivery system, The fuel charging system, the brake system, Suspension system, etc.

3. Pinpiont the cause: What is wrong with the system that is causing it to malfunction?

4. Repair the malfunctioning system: Perform repairs to correct the cause of the system malfunction.

5. Verify the repair: Retest system to verify that the repairs performed were effective in correcting the malfunction that the vehicle was experiencing.

Apr 26, 2011 | 2003 Ford ZX2

1 Answer

engine was running fine and shut it off 5 min. Tried restart and engine cranks but won't fire. Dual tanks 1 new fuel pump.Switch tanks still no start, tried next day, runs fine???????


Step #1 in any automobile diagnosis is "Isolate the system"
Switching fuel tanks may have seemed like a good idea, but it did not definitively determine whether the the fuel is getting to the fuel rails, so you are no closer to eliminating the fuel devery system than you were when the engine died.
If it does it again, you should do the easiest things first.
Pull a spark plug wire and check to see that you have good spark reaching the spark plugs. Good spark will eliminate the entire spark control system.
Only if you have good spark should you suspect a "part-time " fuel system problem. The Fuel delivery system can be eliminated if actual fuel pressure is checked at the fuel rail. (although you could still have injectors not firing for one reason or another)
You are losing one of these systems. (spark or fuel) only once you have determined which one, can you continue diagnosis to pinpiont the failure.

Oct 10, 2009 | 1991 Ford F150

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