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Just want input...

I have a 6th gen of course... 98 civic ex but my problem just recently started about a week or two into march. Im having trouble idoling when I am warmed up sitting at lights and parked (400-500rpms) but if I activate the ac or heater it idols normally (750-800rpms)... idk if this is normal or not thats why I am asking ppl here. There is a twist I have messed with the timing and throttle cable already but it doesnt effect it. I am running 40psi through my AEM fuel rail with the help of the adjustable fuel pressure regulator. The normal psi is 35 so I shouldnt have a problem. My step dad thinks it might be my disturbitor going because of the advancement of the timing... Help plz...

 
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first id start the car, warm it up, leave it running, take off the +batt. term, if it dies its ur alt. if not then adjust the idol screw, its a gold colored flat head screw on the throttle body....good luck

 
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hmmmm thanks a lot dude

 
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did the problem clear up????

 
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Yeah actually it did and in the process I found a vacuum leak in one of the hoses as well. Thanks a lot elusive for the insight!