My idle problem *video clip included* - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Realnez · 10-03-2006, 09:46 PM

Ok this is my annoying idle problem. This has been going on since I've done my KA DOHC swap (around 7000km ago). Since the swap I have changed MAF, ECTS, thermostat, 02 sensor, Air filter (hks mushroom), Water pump, fuel filter, and engine got a full rebuild before I swapped it in. Its only a KA24DE with CAI and nothing else done. Now the problem is whenever the rpms are dropping it will stop at 2000RPM and stay there for about 5 seconds. I can even just slightly tapp the gas and it will jump up to 2000rpm and slowly come back down to a normal idle. This also I think has been effecting my fuel eff, and sometimes I can smell the car running rich. I checked my ecu diagnostic and it threw out code 34 (knock sensor) but I haven't changed that yet. If anyone has had this problem or thinks they know hoe to fix it I would really be happy haha.

Bigballin · 10-03-2006, 10:00 PM

i have the same problem and i also have a bad knock sensor. only thing that i have done that i saw a difference was when i got a full catback (with no cat.) it didnt do that as much. also i held the rpms to 2k for about 2 minutes then "raced" the engine to about 5k.

it still does that idle shit ocassionaly but not as much

91rps13 · 10-03-2006, 10:17 PM

Check for vaccum leaks specially on intake.... buy some intake cleaner and spray it in the smallest hose (close to throttle body) connected to your intake...
your IAC valve is dirty.

search!!!!!!!!!!

91rps13 · 10-03-2006, 10:17 PM

oh i had same prob...

Realnez · 10-03-2006, 10:24 PM

thanks i'll do that tomorrow. DO you recommend any brand of cleaner?

91rps13 · 10-03-2006, 10:30 PM

it doesnt matter just dont buy carb cleaner... ithink i bought it at pepboys.. use like half can... then it should be ok... if after awhile it does it again use the rest...

10-03-2006, 09:46 PM	#1
Realnez Zilvia Junkie Join Date: Jan 2006 Location: Burnaby Posts: 322 Trader Rating: (0) Feedback Score: 0 reviews	My idle problem video clip included Ok this is my annoying idle problem. This has been going on since I've done my KA DOHC swap (around 7000km ago). Since the swap I have changed MAF, ECTS, thermostat, 02 sensor, Air filter (hks mushroom), Water pump, fuel filter, and engine got a full rebuild before I swapped it in. Its only a KA24DE with CAI and nothing else done. Now the problem is whenever the rpms are dropping it will stop at 2000RPM and stay there for about 5 seconds. I can even just slightly tapp the gas and it will jump up to 2000rpm and slowly come back down to a normal idle. This also I think has been effecting my fuel eff, and sometimes I can smell the car running rich. I checked my ecu diagnostic and it threw out code 34 (knock sensor) but I haven't changed that yet. If anyone has had this problem or thinks they know hoe to fix it I would really be happy haha. __________________

10-03-2006, 10:17 PM	#3
91rps13 Zilvia Member Join Date: Sep 2006 Location: El Paso, TX Age: 38 Posts: 202 Trader Rating: (4) Feedback Score: 4 reviews	Check for vaccum leaks specially on intake.... buy some intake cleaner and spray it in the smallest hose (close to throttle body) connected to your intake... your IAC valve is dirty. search!!!!!!!!!! __________________ No more 240

10-03-2006, 10:17 PM	#4
91rps13 Zilvia Member Join Date: Sep 2006 Location: El Paso, TX Age: 38 Posts: 202 Trader Rating: (4) Feedback Score: 4 reviews	oh i had same prob... __________________ No more 240

10-03-2006, 10:24 PM	#5
Realnez Zilvia Junkie Join Date: Jan 2006 Location: Burnaby Posts: 322 Trader Rating: (0) Feedback Score: 0 reviews	thanks i'll do that tomorrow. DO you recommend any brand of cleaner? __________________

10-03-2006, 10:30 PM	#6
91rps13 Zilvia Member Join Date: Sep 2006 Location: El Paso, TX Age: 38 Posts: 202 Trader Rating: (4) Feedback Score: 4 reviews	it doesnt matter just dont buy carb cleaner... ithink i bought it at pepboys.. use like half can... then it should be ok... if after awhile it does it again use the rest... __________________ No more 240

10-03-2006, 10:00 PM	#2
Bigballin Zilvia Member Join Date: Sep 2005 Location: Purple Oillll,TX Posts: 222 Trader Rating: (0) Feedback Score: 0 reviews	i have the same problem and i also have a bad knock sensor. only thing that i have done that i saw a difference was when i got a full catback (with no cat.) it didnt do that as much. also i held the rpms to 2k for about 2 minutes then "raced" the engine to about 5k. it still does that idle shit ocassionaly but not as much

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