General Miata Chat A place to talk about anything Miata

Oh God, help me!

Thread Tools
 
Search this Thread
 
Old 07-08-2007, 06:04 PM
  #1  
Senior Member
Thread Starter
 
MX_Eva's Avatar
 
Join Date: Jan 2007
Location: Maryland
Posts: 698
Total Cats: 0
Default Oh God, help me!

Ok so some scary **** to have happen on the road, heading strait for a exit ramp. Gas pedal hits the floor, then goes farther, gets stuck to the floor and doesn't come back off. First instinct is wrong...clutch in to decelerate...this results in instant revs and bouncing off the rev limit. Turn engine off. I limped it back home by turning it on and off. Transmission pretty much regulates RPM for the rest of the ride home..I brake rpms drop.


Basically I need help. This all occurs after having done a oil change. When I stopped the car I had found that when i pulled the second spark plug wire to clean spilled oil i didn't push it back in all the way. I'm going to be tearing appart my intake to check the TB. I don't know what else to check...any advice. I don't think the Throttle cable melted but it has a lot of slack.
MX_Eva is offline  
Old 07-08-2007, 06:06 PM
  #2  
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,091
Total Cats: 7
Default

Is there an adjustment for the cable at the pedal, maybe that broke?
cjernigan is offline  
Old 07-08-2007, 06:37 PM
  #3  
Senior Member
Thread Starter
 
MX_Eva's Avatar
 
Join Date: Jan 2007
Location: Maryland
Posts: 698
Total Cats: 0
Default

I don't know I took a look at the pedal but couldn't figure anything out.

Also does anyone know what position is most conservative for the throttle position screw?
MX_Eva is offline  
Old 07-08-2007, 07:18 PM
  #4  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,493
Total Cats: 4,080
Default

wow dude. Glad you didnt ride the brake like the dude in his bimmer and crash cause he was too stupid to turn the key.

maybe the cable is snapped and stuck or something? I dunno.
Braineack is offline  
Old 07-08-2007, 07:21 PM
  #5  
Elite Member
 
Philip's Avatar
 
Join Date: Dec 2004
Posts: 3,270
Total Cats: -4
Default

beats the steering wheel coming off in your hands
Philip is offline  
Old 07-08-2007, 07:36 PM
  #6  
Elite Member
iTrader: (3)
 
Mach929's Avatar
 
Join Date: Oct 2004
Location: lansdale PA
Posts: 2,494
Total Cats: 0
Default

throttle return spring?
Mach929 is offline  
Old 07-08-2007, 10:28 PM
  #7  
Elite Member
iTrader: (11)
 
Trent's Avatar
 
Join Date: Feb 2006
Location: Louisiana
Posts: 1,651
Total Cats: 39
Default

if you pull the pedal back up, does the throttle plate move in the engine bay? can you get a helper to check it for you? that'll help eliminate a broken cable. but even if the cable were broken, the plate would default to closed, not open. you might have a stuck cable. we need to see if pedal motion corresponds to throttle plate motion.
Trent is offline  
Old 07-09-2007, 03:42 AM
  #8  
:(
iTrader: (7)
 
magnamx-5's Avatar
 
Join Date: Jul 2006
Location: nowhere
Posts: 8,255
Total Cats: 4
Default

my vote is on return spring. ive had this and my throtle cable fail before on my nissan not fun.
magnamx-5 is offline  
Old 07-09-2007, 03:56 PM
  #9  
Senior Member
Thread Starter
 
MX_Eva's Avatar
 
Join Date: Jan 2007
Location: Maryland
Posts: 698
Total Cats: 0
Default

all is well the spring wasn't seated properly.
MX_Eva is offline  
Old 07-09-2007, 04:03 PM
  #10  
Elite Member
iTrader: (13)
 
cueball1's Avatar
 
Join Date: Nov 2006
Location: Tigard, Oregon
Posts: 3,875
Total Cats: 2
Default

It had to be something simple. Glad it was easy to find. Good job shutting it down safely and limping it home. From what I've seen of stuck throttles most drivers don't think that fast.
cueball1 is offline  
Old 07-09-2007, 04:04 PM
  #11  
Senior Member
iTrader: (3)
 
Dow.tom's Avatar
 
Join Date: Apr 2007
Location: Odenton, MD
Posts: 713
Total Cats: 0
Default

glad to hear, and that you're safe
Dow.tom is offline  
Old 07-10-2007, 10:51 AM
  #12  
Junior Member
iTrader: (7)
 
jsisco's Avatar
 
Join Date: Mar 2007
Location: Texas Panhandle
Posts: 211
Total Cats: 0
Default

Good thing its not a diesel. I have heard scary stories about old vw diesels running away. Basically the engine starts sucking the crankcase oil up and running on that along with the diesel. Starts revving super high. You turn off the key and the DAMN thing keeps running! You gotta get it into the highest gear and get on the brakes hard.
jsisco is offline  
Old 07-10-2007, 10:55 AM
  #13  
:(
iTrader: (7)
 
magnamx-5's Avatar
 
Join Date: Jul 2006
Location: nowhere
Posts: 8,255
Total Cats: 4
Default

that is why they call it deisiling
magnamx-5 is offline  
Old 07-10-2007, 10:56 AM
  #14  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,493
Total Cats: 4,080
Default

now boost the damn thing already Tom!!!!
Braineack is offline  
Old 07-10-2007, 01:44 PM
  #15  
Senior Member
iTrader: (7)
 
Jefe's Avatar
 
Join Date: Mar 2005
Location: VT
Posts: 939
Total Cats: 0
Default

Originally Posted by jsisco
Good thing its not a diesel. I have heard scary stories about old vw diesels running away. Basically the engine starts sucking the crankcase oil up and running on that along with the diesel. Starts revving super high. You turn off the key and the DAMN thing keeps running! You gotta get it into the highest gear and get on the brakes hard.
Not just VW's..any Diesel..

113's used to do it all the time, nothing more fun then trying to find something flat to hold over the air breather intake pipe as a roots blower is howling away
Jefe is offline  
Old 07-10-2007, 04:34 PM
  #16  
Elite Member
iTrader: (3)
 
Arkmage's Avatar
 
Join Date: May 2006
Location: Houston, TX
Posts: 2,895
Total Cats: 0
Default

Originally Posted by jsisco
Good thing its not a diesel. I have heard scary stories about old vw diesels running away. Basically the engine starts sucking the crankcase oil up and running on that along with the diesel. Starts revving super high. You turn off the key and the DAMN thing keeps running! You gotta get it into the highest gear and get on the brakes hard.
that's how I grenaded a bmw diesel engine at work a few years back... the turbo seals got fucked by some idiot never topping off the oil. basically they brought it to me with a knock that my co-workers were sure was fuel knock. I took it out for a test drive... it ran away.... there was enough oil comming out of the twin turbos to keep the engine running and it ramped up to 7K rpm (redline was 5K) before it blew. chucks of metal and a bunch of oil all over the ******* road.... it was nasty. 2006 535D with the M suspension and wheel package.
Arkmage is offline  
Old 07-10-2007, 05:13 PM
  #17  
I'm Miserable!
 
iluvtruenos's Avatar
 
Join Date: Dec 2006
Posts: 212
Total Cats: 0
Default

I thought that when you turn off the car it cuts spark?


Hey fuckfaces, I know exactly how a diesel works and the differences between a gasoline and a diesel car. I'm just ******* with you, but let's see how many 'OMG, di3zels dont use spark LOLOLOL' responses I'm going to get.

And I know that it's possible to diesel a gasoline car too. A buddy of mine bought a carbed prelude from an old lady that never had it above 2k rpm in the 150k miles she had it. After a spirited run, the combustion chamber was probably glowing from all the carbon buildup so it ran for an extra 30 seconds or so.
iluvtruenos is offline  
Old 07-10-2007, 05:22 PM
  #18  
Senior Member
Thread Starter
 
MX_Eva's Avatar
 
Join Date: Jan 2007
Location: Maryland
Posts: 698
Total Cats: 0
Default

Yes it does...that's why the diesel can keep running. Diesels don't use spark they use compression to achieve detonation. Yeah the whole knock thing that everyone in our cars avoid is what purely runs theirs. Turn the engine off to cut fuel but it keeps going on oil.

That would be all kinds of scary.

I'm working on it scott! really...just ordered my MS. ^_^


One of the many things I keep thinking about for a DD is an old BMW or Merc. diesel to convert to bio. Else I'll just get a bike and enjoy the 80 mpg @ 80 mph.
MX_Eva is offline  
Old 07-10-2007, 09:12 PM
  #19  
FHS
Senior Member
iTrader: (2)
 
FHS's Avatar
 
Join Date: Oct 2004
Location: Los Angeles, Ca.
Posts: 502
Total Cats: 0
Default

Same thing recently happened to me. Turned out to be a frayed throttle cable that jammed up inside the cover. Luckily, the throttle cable isn't all that hard to replace. It basically just loops loosly into a groove at the end of the pedal. The hardest part was ripping apart the steering column and taking out the seat to make enough room to crawl under the dash.
FHS is offline  
Old 07-10-2007, 09:21 PM
  #20  
Senior Member
iTrader: (3)
 
Dow.tom's Avatar
 
Join Date: Apr 2007
Location: Odenton, MD
Posts: 713
Total Cats: 0
Default

Originally Posted by Braineack
now boost the damn thing already Tom!!!!

if that shot was at me... i need that turbo back haha. than i need IC piping, and my dp fabbed.
Dow.tom is offline  


Quick Reply: Oh God, help me!



All times are GMT -4. The time now is 12:18 AM.