engine serging/ hunting after warming up - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

fishstix · 11-18-2013, 08:11 PM

I have a 95 240 with an auto trans. For the past month it has been progressively getting worse. After warming up, the engine will have a rough idle and rev up a little speraticly but frequently. When I'm at a stop light the car will want to move if I don't hold the brake firm and it will serge, the car will lift up against the brakes being held; blub a blub idle funny. Its not a vacume leak and I just replaced both o2 sensors. How can I test the iacv or maf? Its not throwing any codes either. Any ideas?

11-18-2013, 08:11 PM	#1
fishstix Join Date: Jun 2013 Location: sacramento Age: 37 Posts: 31 Trader Rating: (0) Feedback Score: 0 reviews	engine serging/ hunting after warming up I have a 95 240 with an auto trans. For the past month it has been progressively getting worse. After warming up, the engine will have a rough idle and rev up a little speraticly but frequently. When I'm at a stop light the car will want to move if I don't hold the brake firm and it will serge, the car will lift up against the brakes being held; blub a blub idle funny. Its not a vacume leak and I just replaced both o2 sensors. How can I test the iacv or maf? Its not throwing any codes either. Any ideas?