My Car Won't Stop Reving To The Max

[bullettdsm]

Good, good. Next step won't be quite as much fun but, take off the throttle body and clean up the channel (area where the IAC goes in. The whole channel). Use carb and choke. Also clean up the hole in the manifold that the IAC mates up to. Keep a rag on the back side of the hole so you don't spray all that crap into the intake. Then put together and try again.

MB

 

[420Adriver]

I did that but it still revs up. But instead of reving so fast that it doesn't register on the tach it alctually registered this time, I started it up and it worked its way up to 2000 rpm and it was still going up but I shut it off. I don't know if this helps any but from the previous owners it looks like there was speaker wire ran to the battery, I taped it off a while ago because I didn't want it to touch the battery and short something out. There is also a sensor wire I noticed a while back that isn't plugged in. It is the same plug in style as the IAC sensor. I noticed a while back and I was curious what it went to. It sits right behind the intake and is up against the firewall.

 

[dr1665]

There is also a sensor wire I noticed a while back that isn't plugged in. It is the same plug in style as the IAC sensor. I noticed a while back and I was curious what it went to. It sits right behind the intake and is up against the firewall.

/shot in the dark: you have a windshield washer bottle still in there? The bottom has two connectors: one for the pump (squirters) and another for the low fluid light. That's one idea. The other would be they might have disconnected the OPSU - all it does is send a dummy light when oil pressure gets low. :shrug

 

[bullettdsm]

I didn't get an answer on the checking the IAC. Did it make a clicking noise? Just because we are grasping a bit here, is your TPS hooked up?

MB

 

[420Adriver]

I didn't get an answer on the checking the IAC. Did it make a clicking noise? Just because we are grasping a bit here, is your TPS hooked up?

MB

Yes I heard a tick come on with my hood up and my door open. I don't really have anyone around to kind of help me with this. Oh and yes my TPS is hooked up.

 

[VelocitàPaola]

Try leaving the IAC hooked up, but disconnect the TPS. Maybe you have some wicked bad idle surge or something... The car should idle normal with a disconnected TPS (just don't try driving it like that).

 

[420Adriver]

Try leaving the IAC hooked up, but disconnect the TPS. Maybe you have some wicked bad idle surge or something... The car should idle normal with a disconnected TPS (just don't try driving it like that).

If that is the problem does that mean I need a new TPS?

 

[VelocitàPaola]

If that is the problem does that mean I need a new TPS?

Yes. The same thing happened to me. My car would rev to 2-3K RPM at 'idle.' I cleaned out the throttle body with steel wool and carb cleaner until it was spotless and installed a new TPS while dropping in my new block a few weeks ago. The problem hasn't come back since.

 

[420Adriver]

I just unplugged my TPS, and it seems like we keep getting closer to the problem. Heres what happened- I started the car and I was like yes its not reving up because it is idling at a perfect 1000rpms for like 1 second then it starts to jump up and I turned it off before it could get higher than 2000rpm's.

 

[bullettdsm]

Reset ECU. Try again.

MB

 

[420Adriver]

Reset ECU. Try again.

MB

I did that know this is what it does. When I start it with everything hooked up it revs up really fast again, when I start it with the tps disconnected now it idles for a few seconds and then all of a sudden starts to jump up again. This is weird.

 

[420Adriver]

What will happen if I disconnect my IAC because I am thinking that could be it and that it might be messed up and letting to much air in since I can't find a leak. I know that you said if I disconnect my TPS if that was the problem it would idle right but since thats not the problem I am thinking it could be the IAC. I talked to a few of mechanics but most of them don't know anything about imports and I got the same response from a few of them that it could be the IAC sensor.
EDIT- If I find this to be the problem I found a junk chrysler that has my engine in it, will the sensors work from it? The only problem that I am worried about from that is that there is no hood on it and I know rain has got in it and I wouldn't be sure if the sensors are still good.

 

[talonfreak96]

Ok im going tdown the road down my normal 65-70 .... i hit a red light and drop it into nutral it constently revs at 2200 rpms untill i stop .... i think its called the IC something .... does anyone know??? ... it connects to the throttle body has the electrical part connected to it i believe .... well does anyone know what thats called and do you think thats the problem??? it controls the idleing to your car???

96 talon esi ..... 420a

yes im so lost
Tony

 

[VelocitàPaola]

1,000,000,000,000,000:1 odds that it's your TPS (throttle position sensor). Replace it, fix your problem, and forget about it.

 

[talonfreak96]

YEAH thats it i couldnt think of the name thanx man ill give you some reps

 

[talonfreak96]

no it idles at 2200 when im in nutral and will go back down to the normal 800 900 ..... y would it be something else

 

[redeclipse7782]

Try pulling the engine moteur fuse, and the ignition switch moteur fuse, they are both in the fuse box under the hood. Then with the fuses removed, try and start the car you wont be able to but it will drain any power out of the car so you make sure your ecu gets reset. Wait 5-10, minutes put the fuses back in and start up the car. If the check engine light is still on you didnt reset the ecu. If that still doesnt fix the issue then maybe it could be a bad ecu????

 

[BigRand]

IAC or Idle air controller is what your thinking of.

try the tps sensor first. Then the IAC next, (I think I'm going to have to check mine as well, making sure they are plugged in securely)

 

[talonfreak96]

ok ... i searched and couldnt find it ... what is that thread that has that link to everything about the motor .... 420a ... it breaks it all down .... i cant find it??

 

[talonfreak96]

... i was on here bout 3 days ago asking about a motor rev that i had ... so i figured it out that i was my TPS or my IAC ok ... well i took my car to the track to work on my reaction times (didnt run it hard becuase of that problem) ... Well i got to the end of the track and droped it in neutral and it redlined and wouldnt go down ... i shut the motor down at the end of the track holdin up the races .... i pop my hood and guess whats inbetween the thottle cable from closing ..... that little hard plastic vacumm line running from the front of the motor to the intake manifold .... so i zip tied it to my strut bar and no problems .... i just saved my self 200 bucks and i was going to order them monday!!

Well if you have a problem like that just check the vacumm hose first

Tony

 

[VelocitàPaola]

talonfreak96, if there's a recent thread dealing with a similar problem to yours, feel free to ask your question there: you don't need to start a whole new thread. Furthermore, when you find the solution to your problem, post it in the original thread, don't start another one.

 

[4UH8ERS]

... i was on here bout 3 days ago asking about a motor rev that i had ... so i figured it out that i was my TPS or my IAC ok ... well i took my car to the track to work on my reaction times (didnt run it hard becuase of that problem) ... Well i got to the end of the track and droped it in neutral and it redlined and wouldnt go down ... i shut the motor down at the end of the track holdin up the races .... i pop my hood and guess whats inbetween the thottle cable from closing ..... that little hard plastic vacumm line running from the front of the motor to the intake manifold .... so i zip tied it to my strut bar and no problems .... i just saved my self 200 bucks and i was going to order them monday!!

Well if you have a problem like that just check the vacumm hose first

Tony

wow!, when we make replys we have already assumed that the person has at least looked under the hood for an obvious problem or in your case obstruction.

 

[420Adriver]

Ok I don't know what happened but know my car has horrible throttle response, you have to keep it reved so it wont die and it acts like it has a rev limiter of 4000-4500, also there is oil leaking from the back of the block. I pulled the codes from my obd2 and here is what it said
po403 exhaust gas recirculation control circuit (blocked off my egr valve no biggy)
po123 throttle/pedal position sensor A circuit high input
po108 manifold absolute pressure/baro sensor high input
po106 manifold absolute pressure/baro sensor range/performance
could this be part of my problems? map and tps sensor? what would make them go out all of a sudden like this. The reason is that I don't want to go pay 150 for both sensors (junkyard) and find out it doesn't fix it. I don't understand why these sensors would all of a sudden go out when I havn't even driven it and before that they worked just fine.

 

[4UH8ERS]

can we say MAP sensor.

 

[420Adriver]

can we say MAP sensor.

Sorry I was just trying to copy it word for word with the sensor thing, and the readings off of my obd2.