Throttle response delay - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

jay07631 · 06-18-2013, 12:32 PM

Just crossed about 4000 miles. seems to getting a slight delay on the gas pedal that didn't exist a few miles ago (getting worse). The only thing I did when I bought the car was drop in a K&N. Any ideas. TIA.

Guillaume · 06-18-2013, 12:34 PM

Going back to the OEM filter seems like the first thing to try?

supramkivtt2jz · 06-18-2013, 12:42 PM

reset the ecu. itll work itself out.

Aaron_blatherwick · 06-18-2013, 02:21 PM

Quote:

Originally Posted by jay07631

Just crossed about 4000 miles. seems to getting a slight delay on the gas pedal that didn't exist a few miles ago (getting worse). The only thing I did when I bought the car was drop in a K&N. Any ideas. TIA.

I had the same issue when I installed the k and n drop in filter, but I reset my ECM before I drove it. Throttle response was bad from a dead stop. It's call a dead pedal. The TPS needs re-learned. I would reset the ECM, then turn the key to the on position and depress the throttle pedal to Wot and back five times. I turned the key back off again before starting the engine but I'm not sure if you really have to or not. The dead pedal should be gone. Mine was. Are you MT or auto?

wheelhaus · 06-18-2013, 03:28 PM

I have also noticed poor throttle response and a rather unresponsive pedal after disconnecting the battery, but a couple days later it was fine after the ECU relearned.

Turdinator · 06-18-2013, 09:03 PM

How long ago did you istall the K&N? If its been in there a while (like months) then i doubt its the cause. Maybe try cleaning the MAF sensor and checking that all the hose clamps are tight on the intake.

jay07631 · 06-19-2013, 11:59 AM

Thanks for the excellent replies. I got a MT btw. Will reset ECU by doing the gas pedal thing.

m.wood0213 · 06-19-2013, 12:24 PM

Quote:

Originally Posted by Turdinator

How long ago did you istall the K&N? If its been in there a while (like months) then i doubt its the cause. Maybe try cleaning the MAF sensor and checking that all the hose clamps are tight on the intake.

try cleaning the MAF, I know ppl here will swear up and down the oil from their filters does not effect anything but its a possibility. After a week or so after the reset you should be able to tell if its gone or not.

quicksilver30 · 06-19-2013, 08:29 PM

So this might sound like a stupid question but when you guys say "Reset the ECU" do you mean just unhooking the battery or is there something more?

charged86 · 06-19-2013, 10:56 PM

Quote:

Originally Posted by quicksilver30

So this might sound like a stupid question but when you guys say "Reset the ECU" do you mean just unhooking the battery or is there something more?

un hook battery both sides for around 15mins. also I have removed both leads and turned headlights on to suck out and remaining power that "could" be in power lines.

CamryDS · 07-09-2013, 09:22 PM

Quote:

Originally Posted by charged86

un hook battery both sides for around 15mins. also I have removed both leads and turned headlights on to suck out and remaining power that "could" be in power lines.

not both just 1 side -- negative. positive can stay

charged86 · 07-09-2013, 10:17 PM

Quote:

Originally Posted by CamryDS

not both just 1 side -- negative. positive can stay

not what ive heard for a very long time

wbsrazzle · 07-09-2013, 10:41 PM

It's in the manual I believe. To reset the ecu, disconnect negative battery terminal for 15-20 minutes and you can also pump the brakes while disconnected to remove any charges and clear the ecu.

06-18-2013, 12:32 PM	#1
jay07631 Member Join Date: Sep 2012 Drives: 2016 Subaru BRZ Limited Black M/T Location: New Jersey Posts: 19 Thanks: 5 Thanked 3 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Throttle response delay Just crossed about 4000 miles. seems to getting a slight delay on the gas pedal that didn't exist a few miles ago (getting worse). The only thing I did when I bought the car was drop in a K&N. Any ideas. TIA.

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06-18-2013, 12:34 PM	#2
Guillaume Senior Member Join Date: Jul 2012 Drives: Exige S 240 Location: Belgium Posts: 732 Thanks: 319 Thanked 602 Times in 287 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Going back to the OEM filter seems like the first thing to try?

06-18-2013, 03:28 PM	#5
wheelhaus Join Date: Jul 2012 Drives: 2013 BRZ, 2020 KTM Super Duke 1290R Location: Denver Posts: 1,788 Thanks: 714 Thanked 1,141 Times in 624 Posts Mentioned: 49 Post(s) Tagged: 1 Thread(s)	I have also noticed poor throttle response and a rather unresponsive pedal after disconnecting the battery, but a couple days later it was fine after the ECU relearned.

06-19-2013, 11:59 AM	#7
jay07631 Member Join Date: Sep 2012 Drives: 2016 Subaru BRZ Limited Black M/T Location: New Jersey Posts: 19 Thanks: 5 Thanked 3 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Thanks for the excellent replies. I got a MT btw. Will reset ECU by doing the gas pedal thing.

06-19-2013, 08:29 PM	#9
quicksilver30 Member Join Date: Sep 2012 Drives: '13 LR BRZ Limited\| '07 Jeep GC Location: Ohio Posts: 56 Thanks: 22 Thanked 22 Times in 16 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	So this might sound like a stupid question but when you guys say "Reset the ECU" do you mean just unhooking the battery or is there something more?

07-09-2013, 10:41 PM	#13
wbsrazzle Member Join Date: Apr 2013 Drives: Subaru BRZ 6MT LTD Location: Norcal - penninsula Posts: 77 Thanks: 2 Thanked 9 Times in 9 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	It's in the manual I believe. To reset the ecu, disconnect negative battery terminal for 15-20 minutes and you can also pump the brakes while disconnected to remove any charges and clear the ecu.

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