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View Full Version : SR rough Idle and running Lean


Syclone916
08-26-2011, 08:32 PM
I've been trouble shooting my SR for about a week now and still haven't came up with anything. It's a S13 Blacktop with a redtop harness and a #62 tuned ecu from central(SPL),have HKS step 1 cams,walbro 255,greddy bov not rec.,external W/G and AFPR set to 40psi. My problem is at Idle it will rev fine but when it sits for abit Idling it goes Lean (21.9a/r) and is rough like it wants to die. Driving its fine A/R's are normal and at wot its about 12.0-11.5 when i can see it. I've searched and check all sensors I can check,set TPS to .45,.46,.48. set throttle plate closed. Cleaned IACV twice and swapped it. Cleaned MAF and swapped with another(KA DOHC). Check FP and set to 40psi and 45psi. Checked timming 2-3 times its 15* and set it to 13* too. I know having the BOV not rec. can mess things up but I'v been running it like that with no problems. This all just started when I was setting my BOV, It was not popping off(had a 15psi spring) so put a lighter spring in it and set it soft while running it was open so I tighten the screw to set it and thats when all this happened. I even put it all back to were it was and the same. Hope someone can help me out. Thanks