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View Full Version : shakly idle, low power ka24de


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.