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Jake, Nissan Technician
Category: Nissan
Satisfied Customers: 4290
Experience:  Experienced collision repair technician, Pulaski Tech graduate and DSM hobbyist.
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I have a 2.5 auto 2005, when cold it will start and rev, but

Customer Question

I have a 2.5 auto 2005, when cold it will start and rev, but when it gets to temp if you touch the excelerator it will conk out. If I dis the MAF sencor it will run and rev but it rattles like big end noise.
Submitted: 3 years ago.
Category: Nissan
Expert:  Jake replied 3 years ago.
Hi there, this certainly sounds like a bad MAF sensor that's out if spec.

When the engine is cold it's running on a fixed fuel trim an not using sensor inputs for closed loop operation.

So once the engine warms up the bad MAF is causing it to stall.
Customer: replied 3 years ago.

New MAF sensor tried still same, when at temp touch throttle and it conks out.

Expert:  Jake replied 3 years ago.
That's peculiar, do you have a way to monitor fuel trims? Can you read live data?