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Throttle Stuck Open By Random Screw

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Old 04-17-2011, 01:19 PM
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Default Throttle Stuck Open By Random Screw

On the way to an Auto-X event this morning my WS6 decided it wanted to be a Toyota. My throttle became stuck wide open! I shut off the ignition and rolled safely to the side of the highway. I opened the hood and found that a black hex head screw had become lodged between the throttle body stop and the big spring and was keeping the cable in tension.

I removed the screw and every thing is back to normal. Now I am wondering where this screw came from?!? I have looked all around the throttle body and the rest of the engine bay and cannot find any open threaded holes. I read about the "throttle screw" coming loose, but mine is still in place (threads seen projecting vertically through the stop just below the loose screw in pic).

Anybody recognize where this screw could have come from?



Old 04-17-2011, 01:33 PM
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Plastic flap under the car??
Old 04-17-2011, 01:58 PM
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Originally Posted by ds98formula
Plastic flap under the car??
Yea, i wondered that too. It does look like a typical GM screw similar to what you find on the interior. But i find it strange that it could randmomly find it's way upward and lodge in there. One in a million shot
Old 04-17-2011, 07:37 PM
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Yeah that looks like an interior screw. They're used all over the dash, center console, trim panels, etc. That particular one actually looks like one I snapped earlier that goes in the linkage for the window motor. It had the same washer too...
Old 04-17-2011, 08:05 PM
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Also one of the screws that holds the brace from the rad support to the front grill behind the right headlight in front of the battery.
Old 04-18-2011, 12:31 AM
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Originally Posted by Orange Juice
Also one of the screws that holds the brace from the rad support to the front grill behind the right headlight in front of the battery.
This.

Also check your front air dam, etc. That screw is used all over for holding panels onto the car.
Old 04-18-2011, 12:11 PM
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Thanks guys for the feedback. Never did find it's original home, but feel comfortable that this screw isn't important and I can forget about it.

BTW, here's what it made me miss out on.....
http://www.youtube.com/watch?v=csNlMlQm0w4
Old 04-19-2011, 03:42 PM
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Ach. That's a huge bummer. Great video, though!

The screw could have just as easily been kicked up off the highway. At least you didn't catch it in your tire.

Also, it's cool that you knew what to do when your car wouldn't stop revving. The Toyota "drivers" did not. Hit the clutch, kill the engine, pull over. Oh, that's right. Prii don't have clutches.
Old 04-19-2011, 05:44 PM
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Originally Posted by StreetsideStig
Ach. That's a huge bummer. Great video, though!

The screw could have just as easily been kicked up off the highway. At least you didn't catch it in your tire.

Also, it's cool that you knew what to do when your car wouldn't stop revving. The Toyota "drivers" did not. Hit the clutch, kill the engine, pull over. Oh, that's right. Prii don't have clutches.
How would a screw on the highway end up lodged in his throttle body??? Oh and I don't have a clutch either.
Old 04-19-2011, 05:52 PM
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Also looks like the balck screws that hold the ecu mounting braket in place.. Random
Old 04-19-2011, 10:32 PM
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doesnt that screw hold up something else under the hood. i am about 600 miles from my car right now or I would look




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