I second that, Marshall. ..it happened to me. Someone adjusted the rods incorrectly , it goes over center and locks up solid at WOT ; you have to set up pedal linkage by the book, the precise angle of pedal at rest and also how the TF link is working . Might be a good idea to add a stop , on center bellcrank not sure there was one?
Being aware of this possibility ought to be on our web site in big red letters. Nothing to do with BIG RED, of course , aka , the golden screwdriver (wrench) did it. The same gold screwdriver that ruins idle mixture screw seats…it will lock I think with engine off if you step hard enough, if way out, but I think somehow engine torque movement may add to this.. Check engine mounts?
From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of 'mgoodknight@xxxxxxxx' mgoodknight@xxxxxxxx [Chrysler300]
Sent: Friday, September 11, 2015 5:20 PM
To: hugh@xxxxxxxxxxxxxxxxx
Cc: chrysler300@xxxxxxxxxxxxxxx
Subject: Re: [Chrysler300] Throttle sticking
Hi Hugh,
Here's what I think is your most likely problem. I experienced that situation one time more than 50 years ago. My best friend had a 1960 Dodge Matador D500 4door sedan former police (sheriff) unmarked car. It was equipped with a 383 ram inducted engine. One evening while cruising the main drag he punched the gas pedal to the floor and the throttles locked in that wide-open position. He promptly pushed the NEUTRAL button and at the same time I reached over and switched off the ignition--------we were rapidly approaching a red light at a major intersection. YES a stupid act on the congested main drag. OH WELL. Pulled over to the side of the road, lifted the hood and promptly discovered that the bellcrank mounted atop the center of the rams had rotated too far overcentering the 2 throttle links so that the springs could not return it to idle.
I'm not sure why we never fixed that problem or even explored how to fix it. 1963 was a long time ago and I forget. Anyway I can't tell you if there is a rotation limiter on that bellcrank that failed, or if the throttle links are adjustable and set too long. I don't have a ram car to look at, nor even good photos. I'm just recommending that you manually rotate the bellcrank to the full throttle limit to see if it might be going too far and causing an over-center lock-up condition.
Marshall Goodknight c300 with home made linkage that won't lock up at full throttle
---------- Original Message ----------
From: "Hugh Baldus hugh@xxxxxxxxxxxxxxxxx [Chrysler300]" <Chrysler300-noreply@xxxxxxxxxxxxxxx>
To: 'Chrysler 300 List' <chrysler300@xxxxxxxxxxxxxxx>
Subject: [Chrysler300] Throttle sticking
Date: Fri, 11 Sep 2015 12:26:25 +0000
Hello and good morning, car people.
Daily-driver status for my 300K, some of it at full throttle. This included during a trip from Auctions America Auburn (IN) Fall event). I mashed the pedal to make a pass, and the throttle stuck wide-open. It has happened 2 times previously, both corrected by quickly lifting it from underneath with my foot. This time it was harder to dislodge, and was an uncomfortable 15 seconds to release it, riding the brakes and prepared for a shut-down if necessary. I even pulled it by hand. My 82 year old father, sitting in the front seat, waited about a minute and broke the silence with a calm question: “Has that happened before?”. 82 years as a car nut have steeled his nerves.
Time for action, as I have no plans to drive that vehicle without the chance to “release the beast” (RAMS). Are there “usual suspects” to troubleshoot that I should have my capable MOPAR mechanic focus upon? Do I remember reading that there is a plastic bit in the linkage that is troublesome?
The Auburn Fall Auction is a must-see, by the way, great museums and activity, and a lot of auction cars (870) and a couple hundred in the “Car Corral”, where owners stick a price on the windshield and see what happens. Sales were over $20M and 85,000 people attended. I watched the 300L Convertible 4-sp., black over red, get chandelier-bid to $60,000, they wanted $80,000. Unlikely.
Thanks in advance for your assistance.
Hugh Baldus
The Baldus Company
260.424.2366
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