96 240sx Sporadic idle, and bucking when warm - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Jukebox · 06-26-2012, 12:44 PM

Problem started when i hit 100mph, then drove home. Not sure if that helps at all, but ever since then ive been having these problems.
PROBLEMS ONLY OCCUR when the car is warm (30min drive)

-Sporadic Idle, fluctuates from 100-800, completely random. One redlight it will act up the next it will idle perfect
-When pulling out it will bog down and if you dont rev it past 3k it will start bucking.
-When cruising the bucking will sometimes happen, and the rpms will drop a little when it happens (only seems to happen under 2.5k-3k rpms)

Any ideas?

Edit: Forgot to mention that no codes are being thrown.

Jukebox · 06-28-2012, 01:53 PM

Bump. Anyone?

silviaks2nr · 06-28-2012, 02:51 PM

You probably need to clean or replace your mafs or primary o2 sensor. Check for vacuum leaks too.

Jukebox · 07-01-2012, 04:03 PM

Quote:

Originally Posted by silviaks2nr

You probably need to clean or replace your mafs or primary o2 sensor. Check for vacuum leaks too.

Primary O2 sensor was just replaced earlier this year, maf is clean and no vacuum leaks. Still happening

06-26-2012, 12:44 PM	#1
Jukebox Join Date: Mar 2011 Location: Pittsburgh, PA Posts: 23 Trader Rating: (2) Feedback Score: 2 reviews	96 240sx Sporadic idle, and bucking when warm Problem started when i hit 100mph, then drove home. Not sure if that helps at all, but ever since then ive been having these problems. PROBLEMS ONLY OCCUR when the car is warm (30min drive) -Sporadic Idle, fluctuates from 100-800, completely random. One redlight it will act up the next it will idle perfect -When pulling out it will bog down and if you dont rev it past 3k it will start bucking. -When cruising the bucking will sometimes happen, and the rpms will drop a little when it happens (only seems to happen under 2.5k-3k rpms) Any ideas? Edit: Forgot to mention that no codes are being thrown. Last edited by Jukebox; 07-03-2012 at 12:00 PM..

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06-28-2012, 01:53 PM	#2
Jukebox Join Date: Mar 2011 Location: Pittsburgh, PA Posts: 23 Trader Rating: (2) Feedback Score: 2 reviews	Bump. Anyone?

06-28-2012, 02:51 PM	#3
silviaks2nr Nissanaholic! Join Date: Nov 2004 Location: SC Posts: 2,105 Trader Rating: (10) Feedback Score: 10 reviews	You probably need to clean or replace your mafs or primary o2 sensor. Check for vacuum leaks too.