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Old 09-03-2013, 10:09 PM   #1
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Throttle body made out of plastic...

I found out today that the throttle body on my Duratec is plastic. I cleaned my maf sensor today and I tightened the clamps on my cai. Well it turns out that the clamp on my throttle body was too tight. My gas pedal was extremely tight due to the fact that the plastic on the throttle body was warped just enough to restrict the movement of the plate. After about 45 minutes of trying to find the problem I figured it out. So if you are installing a new cai DO NOT OVER TIGHTEN THE CLAMPS!! It was kind of funny i couldn't let out the clutch without stomping on the gas and burning the tires. I am just happy that i didn't drive like that and end up with bits of plastic and metal in my engine.


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Old 09-06-2013, 05:28 PM   #2
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Radical, you should've been cutting through the rubber CAI tube to do that.
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Old 09-07-2013, 06:17 AM   #3
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pics?

Never heard of such a thing.
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Old 09-08-2013, 09:10 PM   #4
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I installed a CAI on my 2005 and had the same issue. It took a while to figure out the problem but loosening the clamp at the hose at the throttle body inlet cured the hanging throttle issue. Tightening the clamp distorts the throttle body causing the throttle to hang up (this does not require excessive tightening). You have to run that clamp fairly loose but not enough to let dirt into the system.
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Old 09-08-2013, 09:50 PM   #5
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Quote:
Originally Posted by lAj0828 View Post
I found out today that the throttle body on my Duratec is plastic. I cleaned my maf sensor today and I tightened the clamps on my cai. Well it turns out that the clamp on my throttle body was too tight. My gas pedal was extremely tight due to the fact that the plastic on the throttle body was warped just enough to restrict the movement of the plate. After about 45 minutes of trying to find the problem I figured it out. So if you are installing a new cai DO NOT OVER TIGHTEN THE CLAMPS!! It was kind of funny i couldn't let out the clutch without stomping on the gas and burning the tires. I am just happy that i didn't drive like that and end up with bits of plastic and metal in my engine.
1st time I heard that. ^^^^^^ As you learned not to over tighten clamps/bolts.
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Old 09-09-2013, 02:54 AM   #6
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Thottle body on the zetec is also plastic. The SPI is metal.

You can get a larger throttle body from FSwerks if your interested thats metal. (65mm IIRC)

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Old 09-12-2013, 12:54 AM   #7
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Yeah I guess you live and learn. I don't know if I would be interested in an aftermarket throttle body. From what I have read you only see gains on turbo setups. I was so worried about leaks and dust that I just went overboard. I just tightened the clamp in quarter turn increments until I could feel restriction in the gas pedal. I adjusted it accordingly.

Last edited by lAj0828; 09-12-2013 at 12:57 AM. Reason: left out some information
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Old 10-20-2013, 07:17 PM   #8
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You'll be hard pressed to find maybe, 6 cars with anything but a plastic throttle body after 2000.
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Old 10-21-2013, 08:12 AM   #9
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I would just buy the CFM 67mm throttle body, i'm still NA and I noticed a huge difference in throttle response and driveability, you would see more gains with a turbo setup but even NA it is a great thing to buy, an aftermarket one is the only way to get rid of that plastic, which was a big reason for me
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Old 10-23-2013, 07:49 AM   #10
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To get rid of plastic you must get rid of the car. Today's car requires relearning a few things and learning others first time, like the qualities of plastic parts. LOL.............
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