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Matt, Engineer
Category: Nissan
Satisfied Customers: 21707
Experience:  BEng hons Mech engineering, worked in auto industry for 22 years on engine, transmission and suspension design
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350z rough idle, Runs great but at red lites etc..rough

Customer Question

350z rough idle
JA: Thanks. Can you give me any more details about your issue?
Customer: Runs great but at red lites etc..rough (skip) at idle, usually after engine is warm
JA: OK got it. Last thing — Nissan Mechanics generally expect a deposit of about $20 to help with your type of question (you only pay if satisfied). Now I'm going to take you to a page to place a secure deposit with JustAnswer. Don't worry, this chat is saved. After that, we will finish helping you.
Submitted: 1 year ago.
Category: Nissan
Expert:  Matt replied 1 year ago.


can you tell me what year the car is please?

also how many miles are on it and when it was last serviced?

Customer: replied 1 year ago.
2003, 43k, svcd in July 2015.,
Customer: replied 1 year ago.
It also has a recently installed pop charger type air cleaner
Expert:  Matt replied 1 year ago.



have you tried putting the intake back to standard ? as often an aftermarket intake can upset the MAF meter and so produce the issues you describe?

Customer: replied 1 year ago.
I think there is a piece of cap or something in the maf...does this sound feasible?
Expert:  Matt replied 1 year ago.

very possible

try cleaning the airflow meter by removing it from the car and spraying the exposed sensor wires inside the tube with a brake or switch cleaner - ensure that the cleaner is one of the old fashioned, non Eco type that does not leave a residue

On no account touch the sensor wires with anything physical as they are extremely fragile