Hi revs no control
 

Hey Guys,
I test drove my Red Supra and it did fine till I gassed it or goosed it. The revs went way up and stayed up I had to kill the ignition with the Key to slow it down. After shut down and restart it did fine till I goosed it again and then the same thing happened. I brought it home and parked it.

What does this sound like? The linkage looks to be fine. Could a Vacuum problem do this? an intake leak on the plenum I just put back on? Has anyone ever seen this happen before?


Edited later.
I did a search on this forum and found someone saying that vacuum lines swapped or a vacuum leak could cause revving.

Luckily I photographed my vacuum line positions before I took it apart. I found that I had swapped lines to the Plenum. I also did not have the metal T tube hoses all clamped. Should I re-torque the Plenum bolts? Could this have caused it?

Thanks, Scott

Hi Revs
 

Thats cool. thanks for answering now how do I fix it???? hehe Don't think it's the cables cause if I turn the ignition off and restart then it goes back to normal till I gas it hard again. What about the plenum gasket leaking? Maybe I need to tighten the bolts more?

No its probably not the bolts, I didn't put a new gasket on when I took mine off the first time. All it did was cause a poor idle because of the unmetered air. Have someone watch the throttle underhood with the car off and someone pressing the pedal to see if the plate sticks.

Hi Revving
 

Hmmm, Well I can try that but taking the motor to red line at a standstill is not something I like to do. So far it had only done it while driving. As far as the plate do you mean the butterfly inside the plenum or the throttle cable assembly? Thanks

I said with the car off and yes I am talking about the throttle plate. Its a simple way to see if it is sticking.

No Deceleration at all
 

Whatever it is it just got worse I have no deceleration at all now. Whatever you put the pedal at it stays at. It starts up at 3000rpm idle. Must be a problem in the plenum. Gonna have to take the air boots off and look in there. Something is very very strange here. The motor sounds great but the acceleration is a huge problem, can't be driven safely at all now. Scott

hey had this happen once i started it just b4 buying it and it revved and stayed at 3k so turned it off and lubed the lines and all moving throttle parts its never happened again lol. knock on wood

Knock on wood!
 

MAN YOU CALLED THE BALL! I WAS KNOCKING ON WOOD> ACORNS!
VARMITS !!!!!!

Critters had eaten through the air filter and I had a rats next of wood and acorns and crap coming up into my throttle body! GREAT!

I wonder how much garbage I sucked into the motor. Here are some pics. Problem SOLVED! Or created from dirt in the chambers. CRAP!

Yeah I know, I should have checked this! I was just in the test driving stage.....GRRRRRRRRRR!!!! The butterfly was getting trapped by acorns!
Hopefully most of what made it into the motor was twigs, leaves and acorns shoft crap. I put my shop vac into the plenum and sucked it cleanas I could. Was running good hope it keeps going.... Damn VARMITS!

Makes me feel not so sorry for the dead critters my cats bring to the door with their heads chewed off!

lol wow.

reminds me of a time I fell out of a tree and landed on my buddys 84 mustang.. (not 5.0) I dented the hood and made his throttle cable stick from time to time.. man it was funny to see him freak out whenever he wasn't able to stop! thank god it never got anyone hurt.

haha i would pay to see the look on the guys face when he lets of the gas and it doesn't stop!

Varmits
 

Yeah unbelievable!

I have been wearing that face on the last couple of test drives. It aint such a good feeling but I have a 5 speed, so I could clutch, and kill with the ignition. Brought it home by turning the key on and off cause it was struck at one throttle position. Must have had an acorn wedged in the butterfly. Several came out of the plenum.....GAWD!

If their not tearing into my air filters their plugging up my exhaust. One of my cars once was plugged so tight with a Varmit nest that the car would not start.

I cleaned everything up and put it back together minus the air filter. It starts and throttles normally now. Air Filter from AutoZone asap. Till then it's staying in the driveway.

All I can say is wow. Well atleast you found your problem.

Thanks SO Much
 

Yep, I will have her going again shortly. Thanks Guys, 907mge and the rest that chimed in. 907mge you sent me right to the problem. It was getting stuck. Because of the round shape of the acorn it would break free or unstick on shut down or if I went to see if the throttle was stuck. As soon as I would move the throttle body the acorn would roll free and I couldn't find a problem on exterior examination.

Thank You very much for your help.

the look on the guys face was one of "oh shit" mixed with "man i hope no hot chicks are looking."

The Dent
 

Why didn't you guys just beat the dent back out so it would clear the throttle linkage?

he did eventually.. just funny to see him burn rubber at stop lights un intentional

Its all good now!
 

Well Guys she's all good now, went to Home Depot and Autozone and bought what I think I need to cut the bad muffler off and attach a big round stainless free-flow exhaust. Should be fun trying to rig a hanger for it.

Test Drive today was flawless, except for the rear parking brake that has not let all the way go I guess. I can smell a slight odor of brake burning so I guess I will pull that wheel and look at it. PB Blaster to the rescue again. That stuff works great!

Anyway, mechanically she runs good! It's the little things now, like fixing the dome lights, replacing the wiper blades.Getting non cracked speakers into it. It's a Rollin but not Rockin just yet!

Sure is a delight to be back in a running Supra, you just feel good driving one!

haha shoulda taken pictures!

Don't expect those parking brake shoes to still have all the material left on them. When I did my rear brakes the other day I realized the one side had almost no material left.

Lol
 

Whats real funny is I bought pads for it from AutoZone 8 years ago. This means I can put the set I bought 8 years ago on the red Supra, take those worn pads I take off the red one back to Autozone for a free replacement set for my Black one. HAHA gotta love those lifetime replacement deals when you always fix your own cars, have duplicate models in your driveway and keepo your reciepts.

Getting a free catback exhaust for my MK2 this way as well.

yeah just don't forget about the brake shoes in the rear

i cant get lifetime warranty I live in canada so we don't have autozone here!
D=