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Motor racing on start!!

 
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Old 09-26-2012, 03:36 PM
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Motor racing on start!!

I just finished rebuilding my motor and the moment I start it the idle just shoots through the roof and it just keeps climbing. I have no clue what the hell is causing the idle to do this. I have to shut the motor off or it will redline and blow. I need help with this as soon as possible.
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Old 09-26-2012, 04:01 PM
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Re: Motor racing on start!!

Check the throttle cable on the throttle body
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But you need that scoop on the hood. Is it true that they're big enough to fit your lunch box and all your camera gear in it?
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Old 09-26-2012, 04:01 PM
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Re: Motor racing on start!!

the idle jumps all the way up to 5200 rpms then drops to about 1400 and just jumps up and down I cant figure out what it is
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Old 09-26-2012, 11:13 PM
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Re: Motor racing on start!!

Map and throttle sensor plugs get switched????
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Old 09-27-2012, 01:07 AM
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Re: Motor racing on start!!

Possessed prelude? Just in time for hallo-ween
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Old 09-27-2012, 02:29 AM
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Re: Motor racing on start!!

Did you manage to get something stuck or reversed when it comes to the IACV (Idle Air Control Valve)?
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Old 09-27-2012, 11:37 AM
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Re: Motor racing on start!!

I check if those plugs got switched. I switched them and it did the same thing. I also want to say that I just put a skunk 2 intake manifold on which deletes the egr and iacv. But i still have them in the car the way skunk 2 said to install. Im running out of ideas on how to fix this.
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Old 09-27-2012, 12:06 PM
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Re: Motor racing on start!!

Got any vacuum leaks?
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1995 Honda Prelude SE Turbo; 250whp, 275wtq @ 10psi Soldddd!!!

2000 Acura TL; DD
2005 Stage2.5+ Subaru WRB STi : RzKar!
Ivey Tuned - Advan - Cobb - Rallispec - CP - Perrin - ACT - KillerB - Carillo - TurboXS - Defi - Innovate - Walbro - DeatschWerks - Feal - H&R - Alpine - Infiniti - Curt

2001 Kawasaki STX1100 D.I. - Sold!
2007 Sea-Doo RXT 215; ET 127 +3 S/C impeller, DIY 3" intake, DIY resonator delete/free flow exhaust, DIY oil catch can, Rule 500gph bilge pump


Quote:
Originally Posted by Brash View Post
But you need that scoop on the hood. Is it true that they're big enough to fit your lunch box and all your camera gear in it?
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Old 09-27-2012, 12:49 PM
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Re: Motor racing on start!!

Not that I could find. When I unplugged the IACV sensor the idle jumps quickly between 1800 and 1200 rpms.
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Old 09-28-2012, 02:48 PM
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Re: Motor racing on start!!

Any ideas?
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Old 10-10-2012, 08:06 AM
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Re: Motor racing on start!!

Sounds like a vacuum leak to me. When I got my lude I noticed a lot of those hose clamps were not covering the barbs, and had a small coolant leak and vacuum leak from it.

Try spraying like Carb cleaner or sea foam on the vacuum lines and see if it bogs down. And make sure there are no hoses that aren't attached to something
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