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Chat General Discussion About The Nissan 240SX and Nissan Z Cars |
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06-16-2009, 07:28 PM | #1 |
Leaky Injector
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SR20DET Stalling in neutral/decel - IACV?
I've been researching for over a week now, trying to avoid posting YET ANOTHER THREAD on this subject, but have given up.
When I first start the car (cold), the idle is steady and does not stall. Once the engine is warm, the idle drops to ~800 rpm. If I blip the throttle, the rpm's drop down real low ~500 and sometimes stalls. If I rev up 3k+ and let off the gas, it will definitely stall coming down. The engine appears to be running REALLY rich when it stalls. I can't start the engine back up unless I give it gas... I am running a TD-06 turbo and it does not make any boost revving in neutral. Here is what I have tried up til today: -new plugs -TPS voltage is right (.43 closed and 4+ open) -dumped a lot of intake cleaner down tube to IACV -dumped a lot of carb cleaner -dumped a lot of seafoam -tried decel-air setting on afc-2 -removed iacv to clean with degreaser (brake cleaner and oil eater) -removed iacv again to clean with superclean -disconnected battery to reset ecu in hopes of having ecu relearn -sprayed starter fluid on couplers/vac lines -checked for vacuum leaks -adjusted idle (using tb set screw and iacv adjustment knob while tps and iacv disconnected) -pulled vacuum off bov and plugged -filled coolant The IACV is adjusting when I turn the screw, however the idle drops too low and often stalls. Even with a blip it will seek around for idle and stall unless I very lightly hold the rpms and slowly let off. 740cc injectors hks ssqv (open atmosphere) td06 turbo z32 maf greddy intake manifold nismo fpr hks step 2 cams enthalpy rom safc-2 (no longer installed) I never had this problem with a smaller turbo running the same BOV open atmosphere. Is my IACV dead? I was unable to find how I could test if the spring was working or if it was sealing properly when the unit was removed. I really appreciate anyone taking the time to read this. Please help me! |
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