The "Pedal Dance" testing

[CSG Mike]

Originally Posted by brzaapi

No I don't. Not for this car anyway. But with the OFT, it shouldn't be hard to get something and take a look at values. In fact I think the OFT may actually show the temps on the screen. But to be honest I have not dived into the OFT too much.


So, for the pedal dance to work, am I right in saying that you want your water temp to be above 190f before the car will allow it.


Thanks everyone. Next AX is Feb 8th...if the weather doesn't kill it.

The exact number is 178F. Unless you have an unusually low thermostat, it shouldn't be affecting it. Toyota/Subaru isn't stupid; they know people will add lower temp thermostats.

[stugray]

I have have been wanting to make a switch that tells the car that it is warmed up just for the pedal dance.

I even looked up the pinouts on the ECU, but havent dug in any further.
All it needs to do is open the circuit to the cooolant temp sensor, and switch in a fixed resistor.
One you complete the pedal dance, you switch it back to reading real engine temp.
It would probably mess with the ECU running any special "warmup" maps, but it should be inconsequential.

[brzaapi]

Well if its not the thermostat, and not the tune. I am just perplexed. I really don't think it is user error, but maybe. If anyone else has any ideas, please let me know.

[renfield90]

Originally Posted by stugray

I have have been wanting to make a switch that tells the car that it is warmed up just for the pedal dance.

I even looked up the pinouts on the ECU, but havent dug in any further.
All it needs to do is open the circuit to the cooolant temp sensor, and switch in a fixed resistor.
One you complete the pedal dance, you switch it back to reading real engine temp.
It would probably mess with the ECU running any special "warmup" maps, but it should be inconsequential.

Depending on the design of the state machine in the underlying software, you could kick the system into closed-loop fueling and there may not be a path back into open loop. Then your fuel trims are being calculated/updated based on sensors that haven't come up to temperature. This would self-correct eventually, but it wouldn't sit well with me to drive the car in competition with potentially bad fuel trims. (I've heard WOT is open loop anyway, but still.)

[stugray]

Originally Posted by renfield90

Depending on the design of the state machine in the underlying software, you could kick the system into closed-loop fueling and there may not be a path back into open loop. Then your fuel trims are being calculated/updated based on sensors that haven't come up to temperature. This would self-correct eventually, but it wouldn't sit well with me to drive the car in competition with potentially bad fuel trims. (I've heard WOT is open loop anyway, but still.)

This should behave the same as restarting with it already warmed up (even though it isnt), so it shouldnt be a problem.
The only difference is going from warm to not warm instantaneously.
I suppose that it's possible to upset the state machine, but I would hope the software is more robust than that.

[renfield90]

Originally Posted by stugray

This should behave the same as restarting with it already warmed up (even though it isnt), so it shouldnt be a problem.
The only difference is going from warm to not warm instantaneously.
I suppose that it's possible to upset the state machine, but I would hope the software is more robust than that.

I'm less concerned about breaking the state machine. I'm more concerned about the software making assumptions about things like O2 sensor readiness that aren't true.

[stugray]

Originally Posted by renfield90

I'm less concerned about breaking the state machine. I'm more concerned about the software making assumptions about things like O2 sensor readiness that aren't true.

My suggestion would only affect coolant temperature measured value.
Should not affect any other operation.
The system should operate normally under a failed temp sensor, so one reading strangely (jumping abrubptly) should not break it.

[CSG Mike]

Originally Posted by stugray

I have have been wanting to make a switch that tells the car that it is warmed up just for the pedal dance.

I even looked up the pinouts on the ECU, but havent dug in any further.
All it needs to do is open the circuit to the cooolant temp sensor, and switch in a fixed resistor.
One you complete the pedal dance, you switch it back to reading real engine temp.
It would probably mess with the ECU running any special "warmup" maps, but it should be inconsequential.

Coolant measured value affects warmup mode...

[CSG Mike]

Originally Posted by brzaapi

Well if its not the thermostat, and not the tune. I am just perplexed. I really don't think it is user error, but maybe. If anyone else has any ideas, please let me know.

Try doing it "slower". Some people rush it, but you can really do it slowly. Make sure the "BRAKE" light goes off between e-brake pulls.

[brzaapi]

Originally Posted by CSG Mike

Try doing it "slower". Some people rush it, but you can really do it slowly. Make sure the "BRAKE" light goes off between e-brake pulls.

I will definitely try doing a couple slower run throughs. Thank you sir.

[brzaapi]

Originally Posted by CSG Mike

Try doing it "slower". Some people rush it, but you can really do it slowly. Make sure the "BRAKE" light goes off between e-brake pulls.

Alright. I still can not get the pedal dance to disable the nannies. I have an event this Sunday, so I wasted almost an hour trying it over and over.


Finally something occurred to me. I did not install TPMS sensors in my latest set of wheels. I hate tpms, so I didn't bother. But when the car is going through the start up sequence, the tpms is sensor is blinking, and then goes solid since it cant find tire pressure. That is the only thing that happens in my car, that probably doesn't happen in many others. Do you think that sensor/idiot light staying on could cause the car to not allow the Non-Nanny/pedal dance mode.


Like to hear your thoughts.

[Lunatic]

Originally Posted by brzaapi

Alright. I still can not get the pedal dance to disable the nannies. I have an event this Sunday, so I wasted almost an hour trying it over and over.


Finally something occurred to me. I did not install TPMS sensors in my latest set of wheels. I hate tpms, so I didn't bother. But when the car is going through the start up sequence, the tpms is sensor is blinking, and then goes solid since it cant find tire pressure. That is the only thing that happens in my car, that probably doesn't happen in many others. Do you think that sensor/idiot light staying on could cause the car to not allow the Non-Nanny/pedal dance mode.


Like to hear your thoughts.

I don't have TPMS on my track wheels and I can still do the pedal dance.

[brzaapi]

Damn. I thought I found the reason. I may just post a video of me doing the damn thing. But I cant believe I am screwing the sequence up.

Originally Posted by Lunatic

I don't have TPMS on my track wheels and I can still do the pedal dance.

[CSG Mike]

Originally Posted by brzaapi

Alright. I still can not get the pedal dance to disable the nannies. I have an event this Sunday, so I wasted almost an hour trying it over and over.


Finally something occurred to me. I did not install TPMS sensors in my latest set of wheels. I hate tpms, so I didn't bother. But when the car is going through the start up sequence, the tpms is sensor is blinking, and then goes solid since it cant find tire pressure. That is the only thing that happens in my car, that probably doesn't happen in many others. Do you think that sensor/idiot light staying on could cause the car to not allow the Non-Nanny/pedal dance mode.


Like to hear your thoughts.

Try flashing a stock map on with your OFT, while on pump gas, and see if you can do it.