idle on sr - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Carson · 07-19-2003, 02:14 PM

is there any way to adjust the idle on a red top sr20? I idle at about 1100, and I want it lower; or is this a good idle speed?

uiuc240 · 07-19-2003, 02:43 PM

the idle control valve is adjusted by a screw that can be accessed between the intake runners on the left hand side of the engine. it's a plastic screw...look for it. loosen to raise idle, tighten to lower it. there's more to it than that though...search.

Eric

srpowereds14 · 07-19-2003, 03:09 PM

Plastic??? mine is metal... well turn it clockwise to lower the idle its in between the intake mani runners in the middle big screw.

Fibercus · 07-19-2003, 06:33 PM

Quote:

Originally posted by srpowereds14
Plastic??? mine is metal... well turn it clockwise to lower the idle its in between the intake mani runners in the middle big screw.

Go thru the set timing process, verify the timing is correct... IACValve would be a last resort wouldnt it? Becuase you also have the throttle body adjustment

uiuc240 · 07-20-2003, 12:01 AM

timing, yes.

but the IACV is the proper method for setting idle. the throttle body should be CLOSED at idle. that's the whole point of the IACV...it takes air and routes it AROUND the throttle plate.

Eric

Fibercus · 07-20-2003, 12:45 AM

Quote:

Originally posted by uiuc240
timing, yes.

but the IACV is the proper method for setting idle. the throttle body should be CLOSED at idle. that's the whole point of the IACV...it takes air and routes it AROUND the throttle plate.

Eric

Well, his idle is above the target. TB should be closed, thats why im saying to check it out... maybe its open some *shrug*

uiuc240 · 07-20-2003, 02:02 AM

Quote:

Originally posted by Fibercus
Well, his idle is above the target. TB should be closed, thats why im saying to check it out... maybe its open some *shrug*

word.

but my $5 just says the IACV needs some tightening.

E

Cheng · 07-20-2003, 08:11 AM

Yea, Mine is at about 900-1200 majority of the time its a 900...can any help me out here that why it would variey. Timing everything is ok...But, hey when you mess with the throttle position don't you mess up the timing as well?

07-19-2003, 02:14 PM	#1
Carson Join Date: Jul 2002 Posts: 24 Trader Rating: (0) Feedback Score: 0 reviews	idle on sr is there any way to adjust the idle on a red top sr20? I idle at about 1100, and I want it lower; or is this a good idle speed?

07-19-2003, 02:43 PM	#2
uiuc240 Nissanaholic! Join Date: Apr 2002 Location: Naperville, IL Age: 46 Posts: 2,093 Trader Rating: (0) Feedback Score: 0 reviews	the idle control valve is adjusted by a screw that can be accessed between the intake runners on the left hand side of the engine. it's a plastic screw...look for it. loosen to raise idle, tighten to lower it. there's more to it than that though...search. Eric __________________ 2002 Mazda Protege5 1989 S13 w/SR20DET (sold)

07-20-2003, 12:01 AM	#5
uiuc240 Nissanaholic! Join Date: Apr 2002 Location: Naperville, IL Age: 46 Posts: 2,093 Trader Rating: (0) Feedback Score: 0 reviews	timing, yes. but the IACV is the proper method for setting idle. the throttle body should be CLOSED at idle. that's the whole point of the IACV...it takes air and routes it AROUND the throttle plate. Eric __________________ 2002 Mazda Protege5 1989 S13 w/SR20DET (sold)

07-20-2003, 08:11 AM	#8
Cheng Leaky Injector Join Date: Mar 2002 Location: MN Age: 40 Posts: 103 Trader Rating: (0) Feedback Score: 0 reviews	Yea, Mine is at about 900-1200 majority of the time its a 900...can any help me out here that why it would variey. Timing everything is ok...But, hey when you mess with the throttle position don't you mess up the timing as well? __________________ 90' 240sx fastback Mods: Sr20DET: (BLITZ: FM/IC, BOV, DOWNPIPE, INTAKE) (5zigen Fireball 3" Exhaust) (Bee R testpipe) (Walbro Fuel Pump)

07-19-2003, 03:09 PM	#3
srpowereds14 Zilvia Junkie Join Date: Jul 2003 Location: nor cal Posts: 448 Trader Rating: (1) Feedback Score: 1 reviews	Plastic??? mine is metal... well turn it clockwise to lower the idle its in between the intake mani runners in the middle big screw.