shakly idle, low power ka24de - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

foreverdeath · 05-21-2013, 10:37 AM

ok guys so im stumped on my s13. every since i got it ive had an idle issue right now is the best i have ever got it. right now when you left of the gas it hang around 1200rpm and may climb upto 1400rpm then a a few seconds later it go down to the normal 750. ive been hunting a vac leak for ever and timing is on spot. now i dont think its a vac leak after i have latly be testing it by pressuizng the manifold and liseaning for leaks. today i evening tried cleaning the maf which didnt really help. one thin that confuses me is that if i on plug the maf the idle issue goes away. specs are as is: rebuilt KA24de (2600miles, 248/232 cams, p2r thermal intake gasket, egr/pair/emissions delete, no powersteering, obx header, and no name clod air intake. i have been looking at also with nissan datascan and im just out of ideas. would attach a NDS datalog but i cant find the file outside of NDS. i have no clue where the low power thing had come from but it kinda random and seems to cut power around 3-5k rpm almost like its pulling a shit ton of timing.

TailHappy13 · 05-21-2013, 08:12 PM

Have you tried cleaning out your idle air valves? You may also try a known good MAF. In my experience cleaning a MAF rarely helps...

foreverdeath · 05-21-2013, 10:02 PM

Idle air valve was cleaned during rebuiled. When i lookd at the idle at via consult its idleing at like 12 degrees of timing while idel air control vavle is shut. And tonight i looked at it again with the light and blower on with with each item i turned on it pulled less timing from idle with tells me its getting to much air somehow. By the way the idle air screw is almost all the way in.

foreverdeath · 05-22-2013, 01:02 PM

i found maf a picknpull today dirty outside but hella clean inside run a little better i guess, it reads slight higer then my old maf did. so im back to step one trying to find a vac leak leak any help guys?

i cant drift worth shit · 05-27-2013, 08:20 PM

Missfire or vacuum leak.

foreverdeath · 05-27-2013, 08:22 PM

figured it out already AUTOtragic ECU -.-. its shakey casuit pull timing to compansate for the lack of idle resistance (torque convertor), also runing 232/248 cams, poly mounts doesnt help...

i cant drift worth shit · 05-27-2013, 08:52 PM

Nice. Glad you got it figured out.

05-21-2013, 10:37 AM	#1
foreverdeath Zilvia Junkie Join Date: Sep 2012 Location: va beach Age: 28 Posts: 318 Trader Rating: (3) Feedback Score: 3 reviews	shakly idle, low power ka24de ok guys so im stumped on my s13. every since i got it ive had an idle issue right now is the best i have ever got it. right now when you left of the gas it hang around 1200rpm and may climb upto 1400rpm then a a few seconds later it go down to the normal 750. ive been hunting a vac leak for ever and timing is on spot. now i dont think its a vac leak after i have latly be testing it by pressuizng the manifold and liseaning for leaks. today i evening tried cleaning the maf which didnt really help. one thin that confuses me is that if i on plug the maf the idle issue goes away. specs are as is: rebuilt KA24de (2600miles, 248/232 cams, p2r thermal intake gasket, egr/pair/emissions delete, no powersteering, obx header, and no name clod air intake. i have been looking at also with nissan datascan and im just out of ideas. would attach a NDS datalog but i cant find the file outside of NDS. i have no clue where the low power thing had come from but it kinda random and seems to cut power around 3-5k rpm almost like its pulling a shit ton of timing. Last edited by foreverdeath; 05-21-2013 at 01:34 PM..

05-22-2013, 01:02 PM	#4
foreverdeath Zilvia Junkie Join Date: Sep 2012 Location: va beach Age: 28 Posts: 318 Trader Rating: (3) Feedback Score: 3 reviews	i found maf a picknpull today dirty outside but hella clean inside run a little better i guess, it reads slight higer then my old maf did. so im back to step one trying to find a vac leak leak any help guys? Last edited by foreverdeath; 05-22-2013 at 04:18 PM..

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05-21-2013, 08:12 PM	#2
TailHappy13 Join Date: Nov 2011 Location: California Posts: 15 Trader Rating: (0) Feedback Score: 0 reviews	Have you tried cleaning out your idle air valves? You may also try a known good MAF. In my experience cleaning a MAF rarely helps...

05-21-2013, 10:02 PM	#3
foreverdeath Zilvia Junkie Join Date: Sep 2012 Location: va beach Age: 28 Posts: 318 Trader Rating: (3) Feedback Score: 3 reviews	Idle air valve was cleaned during rebuiled. When i lookd at the idle at via consult its idleing at like 12 degrees of timing while idel air control vavle is shut. And tonight i looked at it again with the light and blower on with with each item i turned on it pulled less timing from idle with tells me its getting to much air somehow. By the way the idle air screw is almost all the way in.

05-27-2013, 08:20 PM	#5
i cant drift worth shit Join Date: May 2013 Location: ontario Posts: 39 Trader Rating: (0) Feedback Score: 0 reviews	Missfire or vacuum leak.

05-27-2013, 08:22 PM	#6
foreverdeath Zilvia Junkie Join Date: Sep 2012 Location: va beach Age: 28 Posts: 318 Trader Rating: (3) Feedback Score: 3 reviews	figured it out already AUTOtragic ECU -.-. its shakey casuit pull timing to compansate for the lack of idle resistance (torque convertor), also runing 232/248 cams, poly mounts doesnt help...

05-27-2013, 08:52 PM	#7
i cant drift worth shit Join Date: May 2013 Location: ontario Posts: 39 Trader Rating: (0) Feedback Score: 0 reviews	Nice. Glad you got it figured out.