stuck throttle!
#3148844
06/05/23 12:23 PM
06/05/23 12:23 PM
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Joined: Jan 2003
Posts: 9,963 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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Frostbitefalls MN (Rocky&Bullw...
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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!!!!!
Last edited by gregsdart; 06/05/23 12:25 PM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: stuck throttle!
[Re: gregsdart]
#3148861
06/05/23 01:09 PM
06/05/23 01:09 PM
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Joined: Aug 2019
Posts: 9,303 Super Spudsville
Mr PotatoHead
Half Baked
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Half Baked
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Super Spudsville
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On a lighthearted note... at least you know how your car hooks in your drive way. Glad things went for the better vs what could of been.
STOP POTATO HATE!
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Re: stuck throttle!
[Re: Mr PotatoHead]
#3148875
06/05/23 01:40 PM
06/05/23 01:40 PM
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Joined: Jan 2003
Posts: 10,009 MN
JERICOGTX
I Live Here
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I Live Here
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MN
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Scary ride Greg. Glad it didn't do any damage.
69 GTX
68 Road Runner
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Re: stuck throttle!
[Re: gregsdart]
#3148881
06/05/23 01:41 PM
06/05/23 01:41 PM
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Joined: Aug 2003
Posts: 43,007 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
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Last edited by Cab_Burge; 06/06/23 02:57 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: stuck throttle!
[Re: moparx]
#3148893
06/05/23 02:39 PM
06/05/23 02:39 PM
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Joined: Jan 2003
Posts: 13,319 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
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Marion, South Carolina [><]
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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
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Re: stuck throttle!
[Re: an8sec70cuda]
#3148900
06/05/23 02:53 PM
06/05/23 02:53 PM
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Joined: Jan 2003
Posts: 9,963 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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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
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Re: stuck throttle!
[Re: gregsdart]
#3148901
06/05/23 02:58 PM
06/05/23 02:58 PM
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Joined: Feb 2008
Posts: 711 Central TEXAS!!!!
sr4440
super stock
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super stock
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Central TEXAS!!!!
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You know, they make a msd ignition tester that will allow you to test all rpm "stuff" without starting the car.
Without Data, youβre just another guy with an opinion.
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Re: stuck throttle!
[Re: gregsdart]
#3148932
06/05/23 04:09 PM
06/05/23 04:09 PM
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Joined: Feb 2004
Posts: 34,831 S.E. South Dakota !
bigdad
Still Posting A Lot
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Still Posting A Lot
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Posts: 34,831
S.E. South Dakota !
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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/-1runs 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
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Re: stuck throttle!
[Re: bigdad]
#3148933
06/05/23 04:15 PM
06/05/23 04:15 PM
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Joined: Jan 2003
Posts: 19,304 Las Vegas
Al_Alguire
I Live Here
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I Live Here
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Posts: 19,304
Las Vegas
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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 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"
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Re: stuck throttle!
[Re: Al_Alguire]
#3148954
06/05/23 05:08 PM
06/05/23 05:08 PM
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Joined: Jan 2003
Posts: 9,963 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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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 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
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Re: stuck throttle!
[Re: gregsdart]
#3148978
06/05/23 06:49 PM
06/05/23 06:49 PM
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Joined: Jan 2003
Posts: 19,304 Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,304
Las Vegas
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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 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"
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Re: stuck throttle!
[Re: Thelma133]
#3149039
06/06/23 05:06 AM
06/06/23 05:06 AM
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Joined: Sep 2005
Posts: 620 Deep DEEP SOUTH
LAD 524
mopar
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mopar
Joined: Sep 2005
Posts: 620
Deep DEEP SOUTH
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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. Good job !
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Re: stuck throttle!
[Re: LAD 524]
#3149045
06/06/23 06:58 AM
06/06/23 06:58 AM
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Joined: Jan 2003
Posts: 9,963 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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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. 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
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Re: stuck throttle!
[Re: gregsdart]
#3149058
06/06/23 08:14 AM
06/06/23 08:14 AM
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Joined: Feb 2008
Posts: 711 Central TEXAS!!!!
sr4440
super stock
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super stock
Joined: Feb 2008
Posts: 711
Central TEXAS!!!!
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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, youβre just another guy with an opinion.
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Re: stuck throttle!
[Re: HardcoreB]
#3149086
06/06/23 10:22 AM
06/06/23 10:22 AM
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Joined: Jan 2003
Posts: 9,963 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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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! 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
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Re: stuck throttle!
[Re: FastmOp]
#3149277
06/07/23 06:56 AM
06/07/23 06:56 AM
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Joined: Jan 2003
Posts: 9,963 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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Always point it out the driveway ππππ© 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
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Re: stuck throttle!
[Re: gregsdart]
#3149287
06/07/23 08:12 AM
06/07/23 08:12 AM
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Joined: Mar 2003
Posts: 2,485 PA
moparacer
top fuel
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top fuel
Joined: Mar 2003
Posts: 2,485
PA
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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
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