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crazzy throttle sticking to red line

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Old Apr 5, 2010 | 08:21 PM
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progress's Avatar
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Default crazzy throttle sticking to red line

So I ahve not had a chance to get this looked at I just got my car back today. I got hit about a month ago. I think I have narrowed it down to eithere the tps or the maf.

If I am driving and shift the throttle seems to get stuck and costantly red lining. Mind you my the clutch is to the floor and my other foot is not touching gas peddle all. I talked to andy from tvt he thought it might me my ecu. after resetting it I did not fix it. I was told from someone who knows nothing about crossfire's that it might be my clutch slipping. Granted I did learn how to drive a stick on this car. I wouldnt know if the clutch is going bad since its my first.

I was told it might be the maf or the tps. Is that possable.

So I would like to know how to tell if the clutch is going, how much is a tps and if its the maf how would that make this issue happen?
 
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Old Apr 6, 2010 | 09:14 AM
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Cody M's Avatar
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Default Re: crazzy throttle sticking to red line

it sounds like the clutch to me. if ur clutch is going bad your car will slip when trying to accelerate. meaning the engine will kind of go without the wheels. another sign is when u hold down the clutch and the rpm's "race" or redline like how you desrcribed. I am about 99.9% sure its ur clutch. hope it helps and let me know.

Edit: a new clutch is gonna cost you some money. my guess is about 400-800 serviced. check the clutch fluid levels first and make sure its ok. is your clutch nice and stiff or really squishly like a sponge? if its squishy then it's bad.
here is another test for you. get the car up to 30 mph or so. Once you reach that speed, put it in 4th gear and punch the gas to the floor for a few seconds. if the engine revs up quickly and the car does not accelerate then your clutch is definitely bad. if the motor lugs and does not rev up, then the clutch is fine
 

Last edited by Cody M; Apr 6, 2010 at 09:27 AM.
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Old Apr 6, 2010 | 12:11 PM
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Default Re: crazzy throttle sticking to red line

It's not the clutch.......

If you had the clutch out (foot off it) and pushed all the way down on the accelerator pedal and the car stood still while the engine redlined, it would be the clutch. You have the opposite problem.



It's not the MAF......

The engine needs air to go to redline. The MAF is just a sensor. It could possibly be the throttle body, but definitely not the MAF.


I'd try the throttle reset procedure first since it's free, then I'd start looking into the electronics.
 
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Old Apr 6, 2010 | 12:43 PM
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Default Re: crazzy throttle sticking to red line

I'm with Apkano, it's definately not the clutch if your foot is off the gas pedal. The clutch would never cause the engine to rev lol. The MAF has nothing to do with the throttle plate opening.. just the fuel mixture. The TPS does; and since our cars are drive by wire, that would be the 1st thing I'd check out. There's really nothing mechanical in the gas pedal, so the problem is most likely electrical. Otherwise, something could be sticking in the throttle body, causing the plate to stay open. Maybe you can just slap a toyota badge on it and make some money out of this .
 

Last edited by downwardspiral; Apr 6, 2010 at 12:46 PM.
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Old Nov 8, 2010 | 11:33 AM
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Default Re: crazzy throttle sticking to red line

Hi,

Did you ever solve this? I am having a similar problem I think, in a 2006 Limited Roadster (auto).

My throttle sticks on when I floor it, I then have to pump it a few times to make it release.

This has just started happening and my car is relatively low mileage (~40000). An interesting coincidence is that the weather has just gotten cooler.

My idea at the moment is to get a can of WD40 and apply it to all linkages and accessible cable from the carb through to the peddal and see if that helps.

Does anyone on this forum have any better ideas about what it might be, what I might try?

Cheers,

Andrew

(LATER) Hey looking through the forum I see something else it might be. I am waiting on some front brake pads as mine are almost down to the metal, about 90% worn, just getting new rotors as well, only a few bucks more than a re-grind, might as well get new. Anyway, over the last few days while waiting for these parts I have been using the tiptronic to do a bit of engine braking, and given some of the problems with the Crossfire tiptronic this has led to some overrevving from time to time. Anyway, my new theory is that my car has "learnt" that I like to do this an now does it for me, and if I do a throttle reset the probelm might go away. Look I'm no mechanic or car expert at all, but it seems plausible enough, really interested to hear from someone who is an expert on what they think. Anyway, I'll add a note once I've got this sorted one way or another.
 

Last edited by TucsonKiwi; Nov 8, 2010 at 11:58 AM.
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Old Nov 8, 2010 | 11:52 AM
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Default Re: crazzy throttle sticking to red line

Originally Posted by Cody M
Edit: a new clutch is gonna cost you some money. my guess is about 400-800 serviced.
Man, is YOUR guess wrong. I was quoted $1650 ($900 parts and $750 labor at an independent BMW/MB shop).
 
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Old Nov 8, 2010 | 01:49 PM
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Default Re: crazzy throttle sticking to red line

Originally Posted by TucsonKiwi
This has just started happening and my car is relatively low mileage (~40000). An interesting coincidence is that the weather has just gotten cooler.

(LATER) Hey looking through the forum I see something else it might be. I am waiting on some front brake pads as mine are almost down to the metal, about 90% worn, just getting new rotors as well, only a few bucks more than a re-grind, might as well get new.
Holy ****, how hard do you drive that thing? I have never seen anyone, except the weekend track guys who can go through those that quick, and I know of multiple people still on OEM after 70K

Originally Posted by pizzaguy
Man, is YOUR guess wrong. I was quoted $1650 ($900 parts and $750 labor at an independent BMW/MB shop).
Are you sure that is all the parts? That is the best price I've seen. Keep in mind, you will probably need a release (throw out) bearing, pressure plate, new flywheel, etc.
 
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Old Nov 8, 2010 | 02:13 PM
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Default Re: crazzy throttle sticking to red line

hi,

The rotors still have plenty of meat on them, I just figured that new ones are so cheap now I might as well just get new ones rather than get the current ones turned when I put on new pads. As I understand it there is a chance of warping or out-of-true planes. whenever you turn rotors so for the sake of a few extra dollars why take the risk?

Are you saying that front brake pads wearing out at 40000 is unusual? I do tend to use a lot of throttle when taking off from lights etc. but don't really speed that much...
 
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Old Nov 8, 2010 | 02:49 PM
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Default Re: crazzy throttle sticking to red line

Originally Posted by downwardspiral
Maybe you can just slap a toyota badge on it and make some money out of this .
Good one.LOL
But that's a low blow kicking a car company when its down.
 
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Old Nov 8, 2010 | 02:58 PM
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Default Re: crazzy throttle sticking to red line

Originally Posted by TucsonKiwi
My throttle sticks on when I floor it.
My idea at the moment is to get a can of WD40 and apply it to all linkages and accessible cable from the carb through to the peddal and see if that helps.
Crossfires are "Drive by Wire" which means there is no throttle cable or linkage or carb on these cars.
 
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Old Nov 8, 2010 | 03:01 PM
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Default Re: crazzy throttle sticking to red line

Hi,

Thanks Val, I'd just been reading up on that, sorry if my ignorance is too painful...

I'm interested to try the throttle re-set and will be completely lost if that doesn't work. Will post again later today when I get a chance to try that.
 
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Old Nov 8, 2010 | 05:42 PM
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Default Re: crazzy throttle sticking to red line

You're looking in the wrong direction, in my opinion.

What you should be looking for is either:

- An air leak around or past the throttle body. This type of leak will cause the engine to rev without any input from you.

- The throttle plate in the throttle body is sticking. Either caused by carbon build up, or the motor for the throttle plate is having issues, and needs to be replaced. I would remove the throttle body, and give it a good cleaning with throttle body cleaner, and a soft toothbrush, and see if the issue is resolved.

BC.
 
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Old Nov 14, 2010 | 03:21 PM
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Default Re: crazzy throttle sticking to red line

Well, problem solved, and man is this dumb... feel free to laugh at the Ph.D. who knows **** about cars...

It turns out that what had happened was that the rubber and metal sleeve that slips over the accelerator pedal had slipped most of the way off and was sticking up and interfering with plastic and that in the firerwall, only when I floored it. So when I floored it the pedal stuck down sometimes, and released when I pumped it.

I was thinking it must have been somthing sticking in the pedal mechanism after I relaized that the pedal itself was actually sticking down when this was happening, but I thought I might have bent something, never imagined it would be something this dumb!

Unreal, I didn't see it 'cause it's sort of hard to see down there unless you get down and look.

Anyway, all good now, and as a result of my looking into the problem I have leared how to do a throttle reset, which is cool and makes a noticable difference, and also have bought one of those new toggleable sprint boosters, can't wait to see how that goes.

By the way, is it really that unusual to have gone through a set of factory front brake pads at 38000 miles?
 

Last edited by TucsonKiwi; Nov 14, 2010 at 03:36 PM.
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Old Nov 14, 2010 | 04:16 PM
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Default Re: crazzy throttle sticking to red line

Originally Posted by TucsonKiwi
Well, problem solved, and man is this dumb... feel free to laugh at the Ph.D. who knows **** about cars...

It turns out that what had happened was that the rubber and metal sleeve that slips over the accelerator pedal had slipped most of the way off and was sticking up and interfering with plastic and that in the firerwall, only when I floored it. So when I floored it the pedal stuck down sometimes, and released when I pumped it.

I was thinking it must have been somthing sticking in the pedal mechanism after I relaized that the pedal itself was actually sticking down when this was happening, but I thought I might have bent something, never imagined it would be something this dumb!

Unreal, I didn't see it 'cause it's sort of hard to see down there unless you get down and look.

Anyway, all good now, and as a result of my looking into the problem I have leared how to do a throttle reset, which is cool and makes a noticable difference, and also have bought one of those new toggleable sprint boosters, can't wait to see how that goes.

By the way, is it really that unusual to have gone through a set of factory front brake pads at 38000 miles?
closer to a Toyota problem than you all thought...lol....if you floor the car while out of gear...it shouldn't go to redline...the throttle will cut out to save the engine...
 
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Old Nov 14, 2010 | 06:23 PM
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Default Re: crazzy throttle sticking to red line

HI,

Actually my throttle was just sticking, not red-lining... I chirped in much later than the original poster...
 
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Old Nov 15, 2010 | 10:27 AM
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Default Re: crazzy throttle sticking to red line

Originally Posted by TucsonKiwi
By the way, is it really that unusual to have gone through a set of factory front brake pads at 38000 miles?
IMO it is, but ask some members what they think. The OEM pads are awfully strong to be through them that quickly.....
 
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Old Apr 29, 2011 | 10:56 AM
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Question Re: crazzy throttle sticking to red line

I too am having the throttle problem,

04 auto

I have a blind corner that my street connects to the main road and so I am forced to make quick actions and when i have to go 0-45ish the peddle likes to randomly stick and make my morning even that much crappier!
I have had it so bad one day that i was driving on a fun road at about 60 and had to slow for a turn... nope the car wanted to go faster. I slapped it into nurture and it red lined! had to kill the engine and restart to fix the problem.

My understanding of the throttle on this car is that its all electric, controlled by the body and ECU...
i am currently having a few other problems that could be related.

- for about 6 months now I have had a BAD shake in all gears when between 1,100 and 1,700 RMP.
- when cold and just started the car will drive for a bit, then when coming to a stop... IF IN D or first gear ... it will want to stall out like im not getting enough gas/ or the torque converter is having problems.
-- related more to the last one -- when the car comes to a stop it will rock back and forth like again when a manual is down shifting and its not enough gas...


to counter most of this I have been using the slap stick to shift naturally as possible when slowing down...

Any help in any area would be great!
 
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Old Apr 29, 2011 | 12:00 PM
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TucsonKiwi's Avatar
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Default Re: crazzy throttle sticking to red line

Hi F11,

This might sound sorta dumb, but I had exactly the same problem with the throttle sticking, and I finally realized that the rubber sleeve covering the accelerator pedal had come loose and was sticking up into the firewall!. It was sorta hard to see down there so I hadn't noticed it. That was all my problem turned out to be, worth a look for you anyway...
 
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Old Apr 29, 2011 | 12:22 PM
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Default Re: crazzy throttle sticking to red line

Originally Posted by TucsonKiwi
Hi F11,

This might sound sorta dumb, but I had exactly the same problem with the throttle sticking, and I finally realized that the rubber sleeve covering the accelerator pedal had come loose and was sticking up into the firewall!. It was sorta hard to see down there so I hadn't noticed it. That was all my problem turned out to be, worth a look for you anyway...
Ya I was your post and will be checking that out at lunch!!!

Thx!
 
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Old Apr 29, 2011 | 12:52 PM
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Default Re: crazzy throttle sticking to red line

Originally Posted by F117NH
Ya I was your post and will be checking that out at lunch!!!

Thx!
What's with your sig?

%25 tinted Tail and Head Lights
EXTREAM HID 5,000
 
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