[James@Tork]

What is the throttle doing?

Also what is that clunk in your video at 0:46 seconds? You initially hear something when you start that pull as well


Last Edit: you initially hear it at 35-3600 rpm and then on decel right about 4300. All in the same area that your having this issue. every other pull there is no sign of this noise

 

[honhon]

do you get wheel spin at all?

 

[precrack]

I think that clunk is me putting it in gear or working the clutch.. No wheel spin btw.. I'm gonna do another few pulls and check out the throttle and injector pulse. I'll post what I find

 

[precrack]

I finally got a dtc to show up! I have no idea if it's related to my issue though ha.. here it is.. C1283 - Yaw Rate & G Sensor Rate (Active) I guess it makes sense if I'm accelerating too hard the sensor is thinking it's on a hill or spinning out or something?

 

[Kneegradamus]

I finally got a dtc to show up! I have no idea if it's related to my issue though ha.. here it is.. C1283 - Yaw Rate & G Sensor Rate (Active) if this sensor is able to close the throttle and open the RCV then my money is that this is the whole problem what do you guys think?

I wouldn't rule it out. And that would be wild if that was related the yaw/g sensor will will directly be related to the traction and abs . Since it reads g's and rotation angle, it's possible it's related but that would be wild
I've seen Crazier shit so you can't rule it out
I've had some Optimas and souls have issues with this sensor but it was related to abs and traction control directly
Premature activation and over compensation of traction control around right turns
Either way the fuel issue you are having is no way related to that sensor
Which in the end makes me think you have gremlins in your car or you are very hard on it ( and there is nothing wrong wit that)

 

[Kneegradamus]

I finally got a dtc to show up! I have no idea if it's related to my issue though ha.. here it is.. C1283 - Yaw Rate & G Sensor Rate (Active) I guess it makes sense if I'm accelerating too hard the sensor is thinking it's on a hill or spinning out or something?

Were you doing any back road spiritual driving lately ?

 

[precrack]

I had my wife hold my laptop today as I went around trying to make the failure happen..I have to push the car extremely hard to get it to fail so 30 minutes later of scarring the crap outta my wife and driving like I am running from the cops I got the traction control light to stay on constantly.. note that I am never spinning the tires when it fails just accelerating hard and the traction control light never comes on when it is failing.. I then did a dtc search and found that. My fuel seems normal man I got it to peak out at like 2800psi after flooring it at 100 in 5th. This sensor is the only thing I've had to go off of in the past 2 weeks I sure hope it's it!

 

[precrack]

Just an update still haven't found cause of this mystery issue but I have confirmed that the injectors are flat line during the failure here is a snap shot of the injectors during the fail.. This one has the whole shop confused..

 

[honhon]

Maybe the light isn't coming on BC its not breaking traction but that the computer feels the car is becoming uncontrolled

By the rapid forward to back movement

 

[Kneegradamus]

Check every wire harness, every connector, fuses, relays, everything something might be moving under hard acceleration like the twist of the engine with these soft mounts and causing this. Try doing a wiggle test while the car is idling on every last thing you can put your hands on under the hood including each fuse and relay. A bad wire or connector could cause this and be open for just long enough to do this but not long enough to set a CEL and when I say check every connector I mean all that are possible especially crank, cam, knock, ect.. I have had a O² sensor with a intermittent short in the heating element that was shutting off a fuel pump, so things are not always as easy as 123.

Great suggestion
I actually chuckled a bit when reading it because you sounded exactly like tech-line when they are busy and they give you some half ass answer
I'm not saying you suggestion was half assed. It was actually the best thing someone could of said at this point in time. I'm just explaining how those f***tards don't do there job
One time I opened a case of a car I was on for a few day
It was racking my brain I did every possible test I could of
I sent them an extremely detailed description of all i she. Down and all my results and these jackasses email me back saying
"Please check all connection and apply Stabiliant 22a and retest"
(Stabiliant 22a is an expansive connection enhancer)
I wanted to fly to Cali and say wtf is wrong with you!!!

 

[Kneegradamus]

Just an update still haven't found cause of this mystery issue but I have confirmed that the injectors are flat line during the failure here is a snap shot of the injectors during the fail.. This one has the whole shop confused.. View attachment 572

From what I see it seems like the ECu is commanding everything to stop as if you were hitting the limiter or fuel cut
Same reason why your BOV is opening at the time of the issue
To put it in perspective it's like when your logging a 4th gear pull and you rev out and hit the limiter and the Bov opens
You are hitting some time of limiter in the ecu and it is commanding these events to happen for a safety reason

 

[precrack]

Well the limiter theory makes perfect sense we confirmed this is not normal operation right? Why am I the only one seeing this cut off and so intermittently?
Here is a small list of things checked and done.

1. Reverted car back to stock
2. Recalibrated g sensor
3. Reset adaptive values
4. Checked harness
5. Checked for proper TPS function
6. Checked fuel system and changed fuel
7. Used two stage traction control button to disable stability control (hold traction control button til system turns off)
8. Corrected tire pressure
9. Checked for proper RCV Solenoid function
Any more suggestions? Crap about to rebuild this car at this rate lol.

 

[Kneegradamus]

Well the limiter theory makes perfect sense we confirmed this is not normal operation right? Why am I the only one seeing this cut off and so intermittently?
Here is a small list of things checked and done.

1. Reverted car back to stock
2. Recalibrated g sensor
3. Reset adaptive values
4. Checked harness
5. Checked for proper TPS function
6. Checked fuel system and changed fuel
7. Used two stage traction control button to disable stability control (hold traction control button til system turns off)
8. Corrected tire pressure
9. Checked for proper RCV Solenoid function
Any more suggestions? Crap about to rebuild this car at this rate lol.

Can u explain exactly, and i mean to the T what you do to make this happen

 

[precrack]

Okay check out the video with the sound on. I am in 2nd gear at 30mph and flooring it. On the second pull in the video it stops accelerating at like 3500rpm I am not letting off the gas until almost redline. Another way and most commonly is from a dead stop and getting to 60mph as fast as I can.. my 0-60 when it fails is 12.5 seconds. Also if I downshift hard like 3rd from 6th going maybe 55mph will cause it too.. Whenever I demand maximum power it will fail maybe 40 percent of the time.

 

[Forte5]

Would re flashing the ecu help at all? Does sound like a power limiter is hit

 

[Kneegradamus]

Would re flashing the ecu help at all? Does sound like a power limiter is hit

You know what that just sparked an idear
Swap ecu's from another forte and see what happens
Its a long shot but I've been right to many times before on weird shit like this

 

[Forte5]

Very true you have! Lol

 

[precrack]

Okay knee lets trade ecu's for a while ha.. jk I'll see what I can do.

 

[Kneegradamus]

Okay knee lets trade ecu's for a while ha.. jk I'll see what I can do.

If you would live in the tristate area it would of been done already

 

[honhon]

maybe you have a gremlin... lemon law comes to mind