HELP car won't idle below 2500 rpm!
10-13-2009, 08:43 AM
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HELP car won't idle below 2500 rpm! I just did an engine swap and now it wont idle below 2500 rpm. I checked the obvious, vacum leaks, stuck throtttle body, but found nothing. anyone know if a stuck IAC could cause this? 
10-13-2009, 01:49 PM
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10-13-2009, 03:17 PM
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if it had a vacum leak, it wouldnt pull any vacum right? when I pulled the line going to the brake booster, it was still under a lot of vacum, wich tells me theres not a leak in the manifold.
10-14-2009, 12:18 AM
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the AIR is disconnected, stock ls6 intake. the problem was a bad IAC valve and a bad TPS. I stupidly lent out my scan tool so that made it tough to figure out. NO VACUM LEAKS. I've done enough engine swaps that I pay very close attention to things like that. It didn't cross my mind that the sensors would go bad from sitting around in hot humid south texas for a month and a half. Also the Texas Speed mail order tune seems prety good so far.
