Bad IAC?
#1
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Bad IAC?
What are the symptoms of having a bad IAC other than rough idle. I have an idle dip when the clutch is engaged but it is fine once it catches itself or I tap the gas. Could that be the issue or does that sound like a bad fuel pump
#5
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A bad IAC will fail to hold proper idle but it won't make the engine run rough. The IAC is just another throttle - a throttle that is controlled by the ECU.
#6
Have the same problem on my 03. I've been thinking its the iac also. Checking it tomorrow to see if it's still in working condition . If the "grooves" or " teeth" are worn then I'm gunna replace it and see if that fixes the problem. If it does I'll make sure to let you know
#7
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Mine goes to 2k for a couple secs and trickles down to 1000-1100 and idles there and then randomly at a light sitting there it drops to 300 and pops back to abt 1000 and wideband gauge shows 11.0 or lower very rich and most of the time it's fine until those random idle dips comes around
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#9
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Have the same problem on my 03. I've been thinking its the iac also. Checking it tomorrow to see if it's still in working condition . If the "grooves" or " teeth" are worn then I'm gunna replace it and see if that fixes the problem. If it does I'll make sure to let you know
#11
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heres the list: S2 cams w/ springs and retainers, walbro 255, 1450cc FIC, megan headers.. yeah i know they suck they were on the car before i bought it but the stock exhaust manifold is about to go back on. aem short ram, turbo xs intercooler + piping, head studs ebay 3 inch turbo back, & i am running the corn E85. It still has stock turbo and stock ECU. Im about to buy a tactrix cable so i can log it.
#15
Also have a hks that was vta , I recirc'd it ran a lot smoother but still had the idle drop. I've checked for a boost leak and didn't hear anything so I'm In a weird way hoping my iac is screwy so I can fix the problem