Engine shuts off when idling

1998 NISSAN PRIMERA
106,000 MILES
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LOVEMARAVA
  • MEMBER
  • 1 POST
I hope I find you well. guys, I have the car listed above with a qr25de engine.the car just cuts off even when it's idling. I replaced spark plugs and the fuel pump. could it be the air flow sensor? I hear those cars are prone to air flow sensor problems.
Dec 17, 2019 at 2:33 AM
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JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
Hi,
This model isn't offered in the US, so my technical information is very limited. However, I'll try my best to help.

Often times this type of problem is caused by an engine vacuum leak or an idle air control valve (IAC). The IAC is located on the throttle body and allows air to enter the engine when the throttle plate closes. It is responsible for maintaining idle speed.

First, take a look through this link to see if it helps.

https://www.2carpros.com/articles/stall-at-idle

Next, here are a couple links to further help. One explains how to check for an engine vacuum leak and the other how to service the IAC.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

https://www.2carpros.com/articles/idle-air-control-valve-service

Let me know if that helps or if you have other questions.

Take care,
Joe
Dec 17, 2019 at 8:37 PM
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