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Car will start but shuts off after three seconds?

Tiny
GARNETALBRIGHT
  • MEMBER
  • 2003 NISSAN X-TRAIL
  • 2.5L
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
The flapper in the throttle body is not opening so only the air in the chamber is being used, I changed the throttle body and the same issue. There are no codes in the ECU and the Throttle relay is closing when I turn the key. There are no blown fuses, and the car has been working perfectly for years.
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Tuesday, March 14th, 2023 AT 3:38 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Is the security light flashing? if so the alarm system is activated, you can try a hard system reboot which is done by removing the negative side of the battery, with the cable loose from the negative side of the battery, hold it to the positive terminal for 1 minute this will discharge the memory capacitors in the BCM and PCM allowing the system to reboot.

Please check out this guide:

https://www.2carpros.com/articles/step-by-step-guide-performing-a-hard-system-reboot-for-your-vehicles-electronics-systems

and

https://www.2carpros.com/articles/how-to-reset-a-security-system

Please go over this guide and report back.

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Wednesday, March 15th, 2023 AT 11:59 AM

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