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stuck throttle! #3148844
06/05/23 12:23 PM
06/05/23 12:23 PM
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Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline OP
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I am not sure what all went down exactly. I backed the car up in the driveway so i would have a bit of room, never trusting things will go perfect . I was right! I was trying to test the airshifter , which i put on an MSD shift light circuit. i had the rpm set at 3200 so i could get it to shift and still hold the car, or if it moved, stop it. After backing up i let go of the transbrake button and the car launched like the throttle was wide open. When the transbrake is activated, an ACD throttle controller colapses to my preset launch setting. Either my foot got in the way, or the throttle stuck, and away we went! I had my foot on the brakes hard, but that is no mach for almost a 1,000 hp!. I reached over and took a swipe at my switch panel, and hit the ignition switch off. I got it stopped about ten feet from the garage and trailer! All i can say is i say a prayer every time i get in that car, and I believe I got help!!!!!

PXL_20230605_154301387~2.jpg
Last edited by gregsdart; 06/05/23 12:25 PM.

8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
Re: stuck throttle! [Re: gregsdart] #3148861
06/05/23 01:09 PM
06/05/23 01:09 PM
Joined: Aug 2019
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Super Spudsville
Mr PotatoHead Offline
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On a lighthearted note... at least you know how your car hooks in your drive way. confused

Glad things went for the better vs what could of been.


STOP POTATO HATE!
Re: stuck throttle! [Re: Mr PotatoHead] #3148875
06/05/23 01:40 PM
06/05/23 01:40 PM
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MN
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JERICOGTX Offline
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Scary ride Greg. Glad it didn't do any damage.


69 GTX 68 Road Runner
Re: stuck throttle! [Re: gregsdart] #3148881
06/05/23 01:41 PM
06/05/23 01:41 PM
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Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
I went through a fence at work years ago when my throttle stuck at WOT showing off entering the yard when no one could see me, that was in my old 415 HP M.W. 1963 Plymouth Belvedere, I had removed the throttle spring return bracket of the left front carb the day before and of course it swung under the throttle linkage on the carb hanging it wide open when I let off the throttle, I reach down after going through the fence and manage to turn the ignition switch off while doing donuts in the dirt field next door whiney
Murphy loves messing with us , HUH rant puke shruggy
I forgot to mention that the left rear wheel cylinder failed while I was on the brakes trying to stop it, it blew the piston out of the cylinder bore and away it went again going through the fence shock puke whiney I had to call my wife after work to come pick me and the car up with my old car hauler truck wrench The car still had the original rear end in it with the tapered axles with left hand lug nuts on the driver's side, what a pain it was getting the brake drum off the axle rant shruggy
What is the old saying, the bad things that happen to us that don't kill only make us stronger, I never wanted to be Superman whistling grin

Last edited by Cab_Burge; 06/06/23 02:57 AM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: stuck throttle! [Re: Cab_Burge] #3148889
06/05/23 02:18 PM
06/05/23 02:18 PM
Joined: Sep 2003
Posts: 19,239
north of coder
moparx Offline
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eek that could have gone WAY bad in a hurry !
your Guardian Angle earned his or her wings certification for sure !!! nervous
beer

Re: stuck throttle! [Re: moparx] #3148893
06/05/23 02:39 PM
06/05/23 02:39 PM
Joined: Jan 2003
Posts: 13,319
Marion, South Carolina [><]
an8sec70cuda Offline
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Wow, that could have been way worse! Glad you got it shut down and didn't tear up anything!


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
Re: stuck throttle! [Re: an8sec70cuda] #3148900
06/05/23 02:53 PM
06/05/23 02:53 PM
Joined: Jan 2003
Posts: 9,963
Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline OP
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The marks show the front wheels never turned a lick! and the slope actually steered the car away from that big pine on the left! Kinda like it threaded a needle! Future tests will be on jackstands, with enough room for tire growth!

Last edited by gregsdart; 06/05/23 02:54 PM.

8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
Re: stuck throttle! [Re: gregsdart] #3148901
06/05/23 02:58 PM
06/05/23 02:58 PM
Joined: Feb 2008
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Central TEXAS!!!!
sr4440 Online content
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Central TEXAS!!!!
You know, they make a msd ignition tester that will allow you to test all rpm "stuff" without starting the car.


Without Data, you’re just another guy with an opinion.
Re: stuck throttle! [Re: gregsdart] #3148909
06/05/23 03:24 PM
06/05/23 03:24 PM
Joined: Jan 2003
Posts: 4,707
Moved to N.E. Tennessee
GomangoCuda Offline
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Good thing you didn't clean up all those maple seeds. It might of launched harder. drive


In theory, there is no difference between theory and practice. In practice, there is.
Re: stuck throttle! [Re: GomangoCuda] #3148922
06/05/23 03:45 PM
06/05/23 03:45 PM
Joined: Jan 2003
Posts: 9,963
Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline OP
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Originally Posted by GomangoCuda
Good thing you didn't clean up all those maple seeds. It might of launched harder. drive
yes!


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
Re: stuck throttle! [Re: sr4440] #3148923
06/05/23 03:46 PM
06/05/23 03:46 PM
Joined: Jan 2003
Posts: 9,963
Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline OP
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Originally Posted by sr4440
You know, they make a msd ignition tester that will allow you to test all rpm "stuff" without starting the car.

MSD tech said no! So please, who do i talk to to get a tester?


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
Re: stuck throttle! [Re: gregsdart] #3148932
06/05/23 04:09 PM
06/05/23 04:09 PM
Joined: Feb 2004
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S.E. South Dakota !
bigdad Offline
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Originally Posted by gregsdart
Originally Posted by sr4440
You know, they make a msd ignition tester that will allow you to test all rpm "stuff" without starting the car.

MSD tech said no! So please, who do i talk to to get a tester?





I had one but, sold mine ..


work great

https://www.jegs.com/i/MSD-Ignition/121/8998/10002/-1


runs car thru complete sequence shifter click thru gears like a ghost is driving


The lips of fools bring them strife, and their mouths invite a beating.Proverbs 18:6
Re: stuck throttle! [Re: bigdad] #3148933
06/05/23 04:15 PM
06/05/23 04:15 PM
Joined: Jan 2003
Posts: 19,304
Las Vegas
Al_Alguire Offline
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Yes they sell one and the newer version even allow you to simulate an entire run. It also is the only one that works with a grid, and its cheaper. Now figure out why the throttle hung open, get a tester as it can save you time, fuel and issuse and get to the track before it freezes again smile


You want this one...

https://proshop.summitracing.com/parts/msd-89981


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: stuck throttle! [Re: Al_Alguire] #3148951
06/05/23 04:59 PM
06/05/23 04:59 PM
Joined: Oct 2014
Posts: 103
Washington
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weedburner Offline
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Washington
A local guy made a pass with his air cleaner removed, but he left the seal ring between the air cleaner and carb. At speed the engine sucked that gasket into the carb, which then stuck the throttle. He ended up going over a dirt berm like Dukes of Hazzard!

Grant

Re: stuck throttle! [Re: Al_Alguire] #3148954
06/05/23 05:08 PM
06/05/23 05:08 PM
Joined: Jan 2003
Posts: 9,963
Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline OP
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Originally Posted by Al_Alguire
Yes they sell one and the newer version even allow you to simulate an entire run. It also is the only one that works with a grid, and its cheaper. Now figure out why the throttle hung open, get a tester as it can save you time, fuel and issuse and get to the track before it freezes again smile


You want this one...

https://proshop.summitracing.com/parts/msd-89981

Al, The tech at Summit read off the specs on both and only the 8998 will test the shift light pattern, which is what i need. So it is on the way At $392 I hope it covers my issue! I did test the throttle stop/ transvrake sequence several times without a hicup. No issues, and plenty of clearance around the components. So i suspect it was due to the wrong shoes and my big feet,! rest assured, this lesson will not be forgotten.


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
Re: stuck throttle! [Re: gregsdart] #3148963
06/05/23 05:33 PM
06/05/23 05:33 PM
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northern,Ohio,USA
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Clanton Offline
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I am glad the car is unharmed I can relate after my car throttle stuck 3yrs ago and I slid sideways into mt driveway gate.


GOTBOOST!New improved with Victor heads.
http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/
Re: stuck throttle! [Re: gregsdart] #3148970
06/05/23 06:30 PM
06/05/23 06:30 PM
Joined: Jan 2003
Posts: 25,851
United Socialist States of Ame...
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tboomer Offline
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You were very lucky Greg! Wow!


The end is near.....
Re: stuck throttle! [Re: gregsdart] #3148978
06/05/23 06:49 PM
06/05/23 06:49 PM
Joined: Jan 2003
Posts: 19,304
Las Vegas
Al_Alguire Offline
I Live Here
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Las Vegas
Originally Posted by gregsdart
Originally Posted by Al_Alguire
Yes they sell one and the newer version even allow you to simulate an entire run. It also is the only one that works with a grid, and its cheaper. Now figure out why the throttle hung open, get a tester as it can save you time, fuel and issuse and get to the track before it freezes again smile


You want this one...

https://proshop.summitracing.com/parts/msd-89981

Al, The tech at Summit read off the specs on both and only the 8998 will test the shift light pattern, which is what i need. So it is on the way At $392 I hope it covers my issue! I did test the throttle stop/ transvrake sequence several times without a hicup. No issues, and plenty of clearance around the components. So i suspect it was due to the wrong shoes and my big feet,! rest assured, this lesson will not be forgotten.


My 89981 works the shifter just fine triggered the same way but with a grid. The older testers will NOT work with a grid. BUt I have one of those in the trailer as well still.


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: stuck throttle! [Re: Al_Alguire] #3149023
06/05/23 11:33 PM
06/05/23 11:33 PM
Joined: Apr 2012
Posts: 157
Louisiana
R
Red440 Offline
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Louisiana






Glad you got it shut off Greg.

Re: stuck throttle! [Re: gregsdart] #3149033
06/06/23 01:47 AM
06/06/23 01:47 AM
Joined: Apr 2022
Posts: 157
Kansas
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Thelma133 Offline
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Kansas
Glad you didn’t get hurt!

Re: stuck throttle! [Re: Thelma133] #3149039
06/06/23 05:06 AM
06/06/23 05:06 AM
Joined: Sep 2005
Posts: 620
Deep DEEP SOUTH
LAD 524 Offline
mopar
LAD 524  Offline
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Deep DEEP SOUTH
Lucky escape, glad there was no damage and nobody was hurt.

Its great that you had the presence of mind in a nano second to hit the switch.....many may not have.

Great save.

I'm super anal on throttle linkage setup as I've seen a lot of similar things happen. frown

Good job !

Re: stuck throttle! [Re: LAD 524] #3149045
06/06/23 06:58 AM
06/06/23 06:58 AM
Joined: Jan 2003
Posts: 9,963
Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline OP
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Originally Posted by LAD 524
Lucky escape, glad there was no damage and nobody was hurt.

Its great that you had the presence of mind in a nano second to hit the switch.....many may not have.

Great save.

I'm super anal on throttle linkage setup as I've seen a lot of similar things happen. frown

Good job !

I say a prayer every time i get in the drivers seat. That is why I believe i got "help" in this misshap. The reaction had to be almost instant to get it shut off. The car moved another 20+ feet after i hit the switch. I don't claim to be that good!


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
Re: stuck throttle! [Re: gregsdart] #3149058
06/06/23 08:14 AM
06/06/23 08:14 AM
Joined: Feb 2008
Posts: 711
Central TEXAS!!!!
sr4440 Online content
super stock
sr4440  Online Content
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Central TEXAS!!!!
Originally Posted by gregsdart
Originally Posted by sr4440
You know, they make a msd ignition tester that will allow you to test all rpm "stuff" without starting the car.

MSD tech said no! So please, who do i talk to to get a tester?


What was the name of the tech? So everyone can avoid this dunba--.


Joe

Last edited by sr4440; 06/06/23 08:21 AM.

Without Data, you’re just another guy with an opinion.
Re: stuck throttle! [Re: sr4440] #3149064
06/06/23 08:52 AM
06/06/23 08:52 AM
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Posts: 4,003
Shelby Twp. Mi
HardcoreB Offline
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GLAD you are ok and there's value in sharing to remind us that these things happen...Now go put up some #'s!

Re: stuck throttle! [Re: HardcoreB] #3149086
06/06/23 10:22 AM
06/06/23 10:22 AM
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Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline OP
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Originally Posted by HardcoreB
GLAD you are ok and there's value in sharing to remind us that these things happen...Now go put up some #'s!
Sean, I am going back over the car with a fine tooth comb, after finding a couple issues with front brakes. On top of that, the track I really want to test at is BIR, because of the very long shutdown. plus friday test and tune is eight hours. So another delay. July, third weekend.


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
Re: stuck throttle! [Re: gregsdart] #3149113
06/06/23 12:57 PM
06/06/23 12:57 PM
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NC
440Jim Offline
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Holy crap!
Glad you got it shut down.

Re: stuck throttle! [Re: 440Jim] #3149187
06/06/23 06:37 PM
06/06/23 06:37 PM
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Hot Rod Ridge
FastmOp Offline
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Always point it out the driveway πŸ˜ŽπŸ€πŸ˜†πŸ’©

Re: stuck throttle! [Re: FastmOp] #3149277
06/07/23 06:56 AM
06/07/23 06:56 AM
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Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline OP
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Originally Posted by FastmOp
Always point it out the driveway πŸ˜ŽπŸ€πŸ˜†πŸ’©

I now have a full awareness of the dangers of testing off track. In the case of my misshap, had i not hit that switch EFFECTIVELY, the odds are i had a good chance of crashing into the garage, getting trapped, and die in the ensuing fire. Not something i want to experience. No more testing without jackstands is the new norm.
So I am ordering a morse cable to hook to my current electrical shut off . The cable will go to the shifter area, for instant access to shutting down the power. I had talked before about doing this, but this incident
pushes me into action.
I hope this incedent prompts others hear to realize that this poo can happen to them, and take appropriate action to protect themselves.


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
Re: stuck throttle! [Re: gregsdart] #3149287
06/07/23 08:12 AM
06/07/23 08:12 AM
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Posts: 2,485
PA
moparacer Offline
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Yes, I seen people tear up cars and even get killed over the years doing that so if I do need to test my trans brake and 2 step the only place mine gets tested is at the track. I find a spot where the car is pointed away from everyone and everything, like into a field or something and then hit the button, go up against the chip and let off. Throttle controllers like you have are very tricky in that they let the throttle go to an idle, then come back up. You just have to remember to let off the throttle and not the t brake button. I have one on my car too.

Thank goodness you got it stopped.


67 Barracuda street/bracket car 11.27-119
68 Dart 502 BB 8.70s-152
414 cid SB Dragster 7.65-174
Re: stuck throttle! [Re: gregsdart] #3149312
06/07/23 09:29 AM
06/07/23 09:29 AM
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aZLiViN
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J_BODY Offline
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It’s always on my mind, even moving the car from the trailer to the garage. Especially since I know who worked on it! laugh2

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