Uninteneded Acceleration Trois?

[Dan Cordon]

Scott from Boston wrote:

<snip>
> 1991 200 20V engine at start up, raced beyond 3000 RPM...........Squirrels 
> stored acorns on top of the Intake Manifold and when the throttle cam was pulled 
> back from throttle application (I always crack throttle when starting...I 
> know you don't have to.....) the acorn rolled under the throttle cam to prevent 
> throttle spring from closing / releasing.....  Not an issue on 5000/100/200 10V 
> engines as engine layout is completely different.
> 
> So let's focus on this one here.......................
> Say I didn't crack the throttle enough.......or go towards WOT............and 
> made it onto the street, then merged onto a roadway where I could accelerate 
> to 50 MPH or more........
> 
> WHEN was that acorn going to keep the throttle "on" at 3,000RPM?
> Was I going to be prepared for it?
> 
> Every one with a 3B 200 20V pop your hood and look at the IM and throttle cam.
> MAKE sure there aren't any acorns or other items that may catch you off guard 
> someday.

To add to this, my 91 200 20v had a very similar problem when I got it. 
But from a different cause. The small plastic washer on the cruise 
control actuator broke, letting the lower part of the rod flop around. 
Occasionally, but rarely the rod would hit something that kept the 
throttle open enough to idle around 3500 rpm. Took me a few times to 
figure out what was happening. As soon as I found the culprit, I pulled 
the system off.

Speaking of....I don't have a FA yet, but can you still buy the little 
plastic piece that fixes the rod to the end of the actuator?

-- 
Dan Cordon
Mechanical Engineer
University of Idaho - Engine Research Facility