Stuck accelerator - 3000GT/Stealth International Message Center

ninjoro · 05-01-2008, 06:12 PM

Hey guys!

So I was out on a date the other night and all of a sudden, in 2nd, at around 4k rpm the accelerator cable grabbed and took the car to the 7k rev limiter and wouldnt back off. I played with the pedal to no avail. I turned it off and rolled into a side street and when i got out and checked the cable, it is way slacked out and the piece that the cable goes to that turns the butterfly in the TBI is stuck in wide open. It took some force to get it back to normal position and playing with it by hand it drops back to the normal position. However, once I got back in and started driving, somewhere in low 3rd it did it again... Again same slack and non responsive on returning to normal position. I checked and the spring is attached still properly, and if i keep it under 3500 or so it doesnt seem to catch...

Any ideas? I am leaning towards taking apart the cruise control box to see if it is doing the nasty deed. I am thinking maybe it is pulling that part all the way to its top stop and that is making it catch and not release cause it is pulling my pedal all the way to the floor when it does it.

Thanks!
Matt

Colt45_GTO · 05-02-2008, 10:32 AM

check ground wires on the motor. sounds like you lost grounding to plenum making the motor ground through the throttle cable.

cure? new cable and reconnect grounds

ninjoro · 05-05-2008, 10:22 PM

any other ideas? i have no clue what colt is suggesting I should check...

i really need to fix this car soon. its my dd and i am having to drive the soccer mom van right now...

Doomtech · 05-06-2008, 01:02 AM

Between your firewall and the plenum is a short flat black ground wire right below that throttle cable... make sure it's attached securely to both the fire wall and the plenum.

ninjoro · 05-06-2008, 05:37 AM

it is. i checked that already. he said engine ground so i assumed that was somewhere else. that cable is attached and secure on both sides...

TwIzTeD_3kGt · 05-06-2008, 05:59 AM

Only other idea I can think of would be carbon build-up around the throttle body valve/butterfly.

ninjoro · 05-12-2008, 09:55 PM

can this have been something as simple as the vacuum line on the non tbi side of the egr solenoid being unplugged? or was that a random find of mine that is unrelated and might the car do this again?

nikg · 05-12-2008, 10:16 PM

take off the y pipe and make sure the rubber gasket isnt getting stuck in the throttle plate.

05-01-2008, 06:12 PM	#1 (permalink)
ninjoro Forum Member Join Date: Sep 2006 Location: Albuquerque, NM Drives: 91 VR4 Trader Rating: (0)	Stuck accelerator Hey guys! So I was out on a date the other night and all of a sudden, in 2nd, at around 4k rpm the accelerator cable grabbed and took the car to the 7k rev limiter and wouldnt back off. I played with the pedal to no avail. I turned it off and rolled into a side street and when i got out and checked the cable, it is way slacked out and the piece that the cable goes to that turns the butterfly in the TBI is stuck in wide open. It took some force to get it back to normal position and playing with it by hand it drops back to the normal position. However, once I got back in and started driving, somewhere in low 3rd it did it again... Again same slack and non responsive on returning to normal position. I checked and the spring is attached still properly, and if i keep it under 3500 or so it doesnt seem to catch... Any ideas? I am leaning towards taking apart the cruise control box to see if it is doing the nasty deed. I am thinking maybe it is pulling that part all the way to its top stop and that is making it catch and not release cause it is pulling my pedal all the way to the floor when it does it. Thanks! Matt __________________ Matt (pretty much happy with his 91 vr4 - black) Live fast, fight hard, regret nothing, fear less Lets see now... K&N IPK, NGK Iridium plugs, Magnecor 8.5mm wires, pocketlogging, gutted precats, rebuilt 9G turbos, rebuilt engine bored 40 over, rebuilt 5speed Getrag, new lines all around, hallman pro rx mbc, new 3sx stage 2 clutch, RFL BOV, ProSport Boost gauge, fuel rail extension (todo: fuel pump hotwire, new injectors, battery relocation, new head unit, new oil cooler, new pulley...)

05-05-2008, 10:22 PM	#3 (permalink)
ninjoro Forum Member Join Date: Sep 2006 Location: Albuquerque, NM Drives: 91 VR4 Trader Rating: (0)	Re: Stuck accelerator any other ideas? i have no clue what colt is suggesting I should check... i really need to fix this car soon. its my dd and i am having to drive the soccer mom van right now...

05-06-2008, 01:02 AM	#4 (permalink)
Doomtech Forum Member Join Date: Apr 2008 Location: Little Rock, AR Drives: 93 Mitsu 3000GT Trader Rating: (0)	Re: Stuck accelerator Between your firewall and the plenum is a short flat black ground wire right below that throttle cable... make sure it's attached securely to both the fire wall and the plenum.

05-06-2008, 05:37 AM	#5 (permalink)
ninjoro Forum Member Join Date: Sep 2006 Location: Albuquerque, NM Drives: 91 VR4 Trader Rating: (0)	Re: Stuck accelerator it is. i checked that already. he said engine ground so i assumed that was somewhere else. that cable is attached and secure on both sides...

05-06-2008, 05:59 AM	#6 (permalink)
TwIzTeD_3kGt 2 + 2 is CHICKEN! Join Date: Oct 2005 Location: Rochester, NY Drives: 1997 VR4 / 1994 SL Trader Rating: (11)	Re: Stuck accelerator Only other idea I can think of would be carbon build-up around the throttle body valve/butterfly. __________________ Pictures & Videos

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05-12-2008, 09:55 PM	#7 (permalink)
ninjoro Forum Member Join Date: Sep 2006 Location: Albuquerque, NM Drives: 91 VR4 Trader Rating: (0)	Re: Stuck accelerator can this have been something as simple as the vacuum line on the non tbi side of the egr solenoid being unplugged? or was that a random find of mine that is unrelated and might the car do this again?

05-12-2008, 10:16 PM	#8 (permalink)
nikg nikg3kgt Join Date: May 2007 Location: South Dakota Drives: 94 3000gt vr4 Trader Rating: (4)	Re: Stuck accelerator take off the y pipe and make sure the rubber gasket isnt getting stuck in the throttle plate. __________________ TD05 is coming!!!