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-   -   throttle dip? (https://www.ft86club.com/forums/showthread.php?t=40435)

JDM FRS 06-30-2013 02:04 PM

throttle dip?
 
I have sort of dumb question. I have been driving MT cars for the past 10years and I ended up getting my FRS with AT(don't judge me lol) but anyways I have noticed that whenever I really jump on the throttle from a standstill that the RPM dips for a split second then takes off. It feels like it has no power at first and the tires barely even chirp(evenin sport mode with assists disabled.. Could this be the same issue that is fixed with the ECU reflash? Or is this normal for an automatic? Even in neutral/park when I rev I see the rpm dip before revving.

FRiSson 06-30-2013 02:19 PM

There does seem to be a momentary lag.

JDM FRS 06-30-2013 02:23 PM

Quote:

Originally Posted by FRiSson (Post 1035836)
There does seem to be a momentary lag.

Its happening on your stick too?

FRiSson 06-30-2013 03:22 PM

Quote:

Originally Posted by dttaz (Post 1035845)
Its happening on your stick too?

Yes, MT. There is a tiny hesitation. And at other times, I don't get a linear development of power. Sometimes it seems to slightly dip or hesitate.

Hindi 06-30-2013 03:25 PM

Typical with dbw throttle body cars. Probably seems worse with the at?

JDM FRS 06-30-2013 03:29 PM

Quote:

Originally Posted by Hindi (Post 1035948)
Typical with dbw throttle body cars. Probably seems worse with the at?

Yea thats what I was thinking. Does the ecu reflash make it a little better?

Hindi 06-30-2013 04:28 PM

Quote:

Originally Posted by dttaz (Post 1035960)
Yea thats what I was thinking. Does the ecu reflash make it a little better?

I personally can't say. I'm thinking that even if pedal response wasn't adjusted, a good reflash helping get rid of the "torque dip" would make a big improvement. I wonder if you just happen to be in the low torque band of rpm when this hesitation seems the worst.

Maybe someone with a reflash can chime in.

I think they also make electronic pedal controllers which are suppose to help, again I've never used one.

Steve 06-30-2013 05:35 PM

also noticed this, when mashing the throttle RPMs drop below idle and make the car shudder before spiking up. Learned to ease into it slightly to avoid this when wanting to floor it

mikeg7827 06-30-2013 09:48 PM

after my reflash this past saturday... i noticed this issue.. it doesnt happen every day and i even brought the car back to the dealer service shop and of course.. what do u know.. the problem doesnt happen!

good thing was i took a video and emailed it to my service advisor but it didnt do any good. :(

im uploading it to youtube so i can show ya what im experiencing

mikeg7827 06-30-2013 09:54 PM

[ame]http://youtu.be/BaxX3fBANpM[/ame]

Barbarian 06-30-2013 10:11 PM

I've noticed this a few times with my MT, but usually only when the engine is cold. I always just assumed it was related to the engine warming up.

01s0uljah 06-30-2013 11:08 PM

If you have any HVAC on. it'll raise your idle abit to power it.. Its normal.. I see it mine

Freeman 07-01-2013 12:43 AM

Quote:

Originally Posted by mikeg7827 (Post 1036517)

That might be the idle hunting issue, I want to say bad cam sensor? Not sure haven't read through the idle drop thread in a long long time. It couldn't hurt to skim that. (It's a sticky)

Mine idle dips every now and then. I figure if I end up getting a CEL and have to take it in, then my paranoia about a first model year car and buying the extended warranty was justified.

Via my Note 2

JDM FRS 07-03-2013 01:13 AM

Quote:

Originally Posted by Freeman (Post 1036777)
That might be the idle hunting issue, I want to say bad cam sensor? Not sure haven't read through the idle drop thread in a long long time. It couldn't hurt to skim that. (It's a sticky)

Mine idle dips every now and then. I figure if I end up getting a CEL and have to take it in, then my paranoia about a first model year car and buying the extended warranty was justified.

Via my Note 2

I think its just because im so used to driving a stick and being able to control thd engine speed before letting out the clutch.


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