What is the problem with my 1995 automatic Nissan Pathfinder?

in order for an engine to run, you need compression, fuel, and spark. you are probably missing one of these 3. remove your air tube from the air filter box .eand spray starting fluid, or brake cleaner into the throttle body. if it starts, you pave a fuel problem. i e fuel pump of pump control

Engine system needs inspection on case of backfire:-----

Check out related help links to troubleshoot the vehicle backfire issues:-----

Feels like backfire from engine when decelerating?

http://schematicsdiagram.blogspot.in/2012/02/feels-like-backfire-from-engine-when.html

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Jeep Backfires?

http://technoanswers.blogspot.in/2012/02/jeep-backfires.html

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Nissan Pathfinder stalls and bucks on Acceleration?

http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html

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Nissan Pathfinder Backfires?

http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-backfires.html
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These will help.
Thanks.

Anytime the check engine light comes on, you check the computer for trouble codes. The codes will not tell you what to replace, but rather what to check.
Let me know what you find out.

Automatic or manual trans?
If the engine does not accelerate and just basically stays at a fixed RPM when you push on the gas then it sounds like your catalytic converter is clogged and choking the engine. I had this exact problem on a Isuzu impulse. If the engine races but the car doesn't go anywhere then it's your transmission.

you most likely have abad/binding universal joint in one of the driveshafts.

You have to re-set the obd via using Nissan's approved drive-cycle which is;

1. Start the engine when the engine coolant

temperature gauge needle points to C. Allow

the engine to idle until the gauge needle

points between the C and H (normal operating

temperature).

2. Accelerate the vehicle to 55 MPH (88

km/h), then quickly release the accelerator

pedal completely and keep it released for at

least 6 seconds.

3. Quickly depress the accelerator pedal for a

moment, then drive the vehicle at a speed

of 53 to 60 MPH (86 to 96 km/h) for at least

5 minutes.

4. Stop the vehicle.

5. Accelerate the vehicle to 35 MPH (55 km/h)

and maintain the speed for 20 seconds.

6. Repeat steps 4 through 5 at least 3 times.

7. Accelerate the vehicle to 55 MPH (88 km/h)

and maintain the speed for at least 3 minutes.

8. Stop the vehicle and turn the engine off.

9. Repeat steps 1 through 8 at least one more

time.

If step 1 through 7 is interrupted, repeat the

preceding step. Any safe driving mode is acceptable

between steps. Do not stop the engine

until step 7 is completed. If you cannot or

do not want to perform the driving pattern, a
NISSAN dealer can conduct it for you.

sounds like torque converter problems needs to be check by shop. berrydalewolf

check the drive shaft between the intermediate transmission and the front transmission for miss alignement and defectivness of the telescopics system of this shaft. we had about the same problem on our 1996 same model...

You'll probably have to change the clutch plate on the flywheel. You'll have to get a floor jack, but a transmission jack is easier to remove the transmission. To remove the transmission you'll have to remove the tortion bars on both front wheels. Also, you'll have to remove the crossmember aft of the transfer case. You'll also have to remove the front and rear drive shafts. The manual says you should keep the transfer case from leaking oil out the back. but, you can just top it off after you're done. Be careful not to damage the seal seal for the rear drive shaft. Anyway, once you get the transmission and transfer case out (you'll have to remove the shift and transfer case levers), you should have enough space to remove the clutch plate from the flywheel on the engine. You should have an alignment tool to make sure the clutch plate is aligned with the crankshaft so you can put the transmission back on.

It's your MAP, MAF OR TPS sensor Do you have a check engine light?