car bogging down low/stalling when hot need help - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Trixunlimited · 07-10-2012, 09:21 PM

I just picked up a 89 nissan 240sx that ran good when I bought it but seemed to have a slight bog only when the car was hot/or after i drove moderately hard. After a couple of days the bog got worse so now i had to give the car about 1/20th throttle from a stop just to keep the car from bogging but after the car is moving it is fine. I was like ok let me change some stuff and after all the changes i list now(, spark plugs, wires, cap, rotor, fuel filter, fuel pump,) nothing has gotten better

So my next ideas were 02 sensor/ignition coil/maf sensor.

Any help is welcome I just cannot seem to figure out the issue. But like I said when the car is cold it runs good but when its hot it acts like doo doo butter and even idles bad.

Trixunlimited · 07-10-2012, 09:22 PM

Or even injectors but I do not think they would get worse over time with heat issues i dunno

Trixunlimited · 07-11-2012, 05:17 AM

Bueler anyone

Trixunlimited · 07-11-2012, 09:51 AM

Changing the oxygen sensor and the ignition coil now, otherwise the last two things are injectors and maf

Trixunlimited · 07-11-2012, 09:54 AM

This is also on a stock ka sohc, automatic.

Chugpuppy · 07-11-2012, 06:13 PM

take a look at my thread, see if it's similar to your problem:

#/f/tech-talk/463937...hing-idle.html

s13drob · 07-12-2012, 11:35 PM

Check the base idle and base timing. I bet your base idle is too low and wouldnt hurt to check the timing for the poor performance. This is for KA24DE, but i think its the same procedure.

KA-T.org - The Home of 1000+ whp/7 sec Turbo KA's

07-10-2012, 09:21 PM	#1
Trixunlimited Join Date: Jul 2012 Location: Queens ny Age: 34 Posts: 19 Trader Rating: (0) Feedback Score: 0 reviews	car bogging down low/stalling when hot need help I just picked up a 89 nissan 240sx that ran good when I bought it but seemed to have a slight bog only when the car was hot/or after i drove moderately hard. After a couple of days the bog got worse so now i had to give the car about 1/20th throttle from a stop just to keep the car from bogging but after the car is moving it is fine. I was like ok let me change some stuff and after all the changes i list now(, spark plugs, wires, cap, rotor, fuel filter, fuel pump,) nothing has gotten better So my next ideas were 02 sensor/ignition coil/maf sensor. Any help is welcome I just cannot seem to figure out the issue. But like I said when the car is cold it runs good but when its hot it acts like doo doo butter and even idles bad.

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07-10-2012, 09:22 PM	#2
Trixunlimited Join Date: Jul 2012 Location: Queens ny Age: 34 Posts: 19 Trader Rating: (0) Feedback Score: 0 reviews	Or even injectors but I do not think they would get worse over time with heat issues i dunno

07-11-2012, 05:17 AM	#3
Trixunlimited Join Date: Jul 2012 Location: Queens ny Age: 34 Posts: 19 Trader Rating: (0) Feedback Score: 0 reviews	Bueler anyone

07-11-2012, 09:51 AM	#4
Trixunlimited Join Date: Jul 2012 Location: Queens ny Age: 34 Posts: 19 Trader Rating: (0) Feedback Score: 0 reviews	Changing the oxygen sensor and the ignition coil now, otherwise the last two things are injectors and maf

07-11-2012, 09:54 AM	#5
Trixunlimited Join Date: Jul 2012 Location: Queens ny Age: 34 Posts: 19 Trader Rating: (0) Feedback Score: 0 reviews	This is also on a stock ka sohc, automatic.

07-11-2012, 06:13 PM	#6
Chugpuppy Leaky Injector Join Date: Sep 2009 Location: ME/MA/NY Posts: 99 Trader Rating: (0) Feedback Score: 0 reviews	take a look at my thread, see if it's similar to your problem: #/f/tech-talk/463937...hing-idle.html

07-12-2012, 11:35 PM	#7
s13drob Zilvia Addict Join Date: Jan 2008 Location: socal Posts: 774 Trader Rating: (29) Feedback Score: 29 reviews	Check the base idle and base timing. I bet your base idle is too low and wouldnt hurt to check the timing for the poor performance. This is for KA24DE, but i think its the same procedure. KA-T.org - The Home of 1000+ whp/7 sec Turbo KA's