LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Quick help!

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Old 02-24-2003, 01:18 PM
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Quick help!

With the mods listed below, my car idle drops dramatically when I first shift from Park to Drive or Reverse. In P, it idles around 1100 rpm and in D or R, it idles about 800 rpm. When I shift from P to D or R, it drops to about 200-300 rpms and after a second or so, it goes back up. What is causing this (IAC?) and can it be fixed? Thanks,

Kyle
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Old 02-24-2003, 01:37 PM
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Re: Quick help!

Originally posted by vodoo-chile
With the mods listed below, my car idle drops dramatically when I first shift from Park to Drive or Reverse. In P, it idles around 1100 rpm and in D or R, it idles about 800 rpm. When I shift from P to D or R, it drops to about 200-300 rpms and after a second or so, it goes back up. What is causing this (IAC?) and can it be fixed? Thanks,

Kyle
is it tuned?
my car idles aroundd 800rpms with 236/242 cam.
The drop is normal
****, my car will stall sometimes when i go from P to R or D
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Old 02-24-2003, 02:10 PM
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Yes, I have it tuned by Bryan @ PCMforless. I even had him bump the idle RPM's up soem trt and counter the drop. What exactly does the IAC do? I thought it was supposed to compensate for this type of stuff. Your cam is a wee bit bigger than mine so I would kind of epect that from your car but this is the reason i went with the HC; it was supposed to be pretty close to stock idle characteristics with more mid and top end. Any ideas, keep them coming,

Kyle
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Old 02-24-2003, 09:54 PM
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Any help?

Kyle
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Old 02-24-2003, 10:13 PM
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your idle is way too ****ing high
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Old 02-24-2003, 11:51 PM
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I know!

Kyle
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