'96 I30 cranks but won't start up.

[djsalducci]

Every time I try starting it up, it just shuts off. What could be some possible reasons this is happening?

[loystock]

There are so many posts about this issue but how they were fixed varies. Please do a search and you will find lots of information.

You may have a clogged fuel filter, defective fuel pump/controller, ignition problem, vehicle security lock, etc. Below is a post I've done a while back and how I've fixed it. In my case, it was fixed after cleaning the fuel injector ground points (to the rear of the oil filler cap) and application of dielectric grease on starting and fuel system connectors.

...I have a 99 I30 (4th gen. Maxima) with 64,400 miles. Car has completed the 60K Maintenance last Nov’ 06 where plugs, belts etc., were replaced. Yesterday, the car died after the first start. Subsequent starts only crank the engine but won’t run (fuel tank more than half full). I did some preliminary work but car still won’t run. BTW, all replacement parts are OEM and mostly bought from Joe (Infiniti of Scottsdale).1. Battery is good (2-1/2 years old) and connectors are clean and tight. No load voltage 12.53 VDC and cranking voltage between 11.5 to 11.9 VDC. Jump-start didn’t help.2. Starter is good since it cranks the engine and is just 3 years old.3. Alternator is just 1 year old with output of >13 VDC. 4. Air and fuel filters are relatively new but replaced them anyway.5. Cleaned MAF sensor and throttle body.6. All fuses in engine compartment and kick panel checked out Ok.7. Fuel pump connections and input voltage Ok. With ignition switch ON pump has an output of 43 PSI (measured downstream of the fuel filter thru a gauge on a T-fitting).8. Pulled out 3 spark plugs in front and all are in good condition (not wet on removal). Spark plugs fired when doing ‘spark’ test.9. No CEL code indicated after hook up of OBD II scanner.10. Wiggled the wiring harness on top of the engine, pax side to check for loose connections.-Problem fixed after cleaning of fuel injector ground points and application of dielectric grease on most connectors related to starting and fuel control system.

Good Luck,Rod

[djsalducci]

thanks a lot man, i'm still trying to troubleshoot this problem...I had my mechanic come and scan it and he concluded it was the crank sensors since the scan is giving off no codes...I changed the crank sensors out as well as the spark plugs but i still have no start...I am about to reset my ecu to see if the computer is not giving out bad codes....is there a proper way to do this? where exactly is the location of the ecu?

[loystock]

Have you done anything else aside from replacing the crank sensor? I didn't get a code too when I had this problem. You can download a copy of the FSM to help you in T/S. Did you clean the ground leads-contacts, connectors and applied dielectric grease? You may have a loose connection in the main harness hence the recommendation to wiggle it.

Rod