Dip at 1000rpm
 

Hey guys, I'm getting an odd dip at around 1000rpm when I'm coasting to a stop and my foot is off the gas. Lasts for a fraction of a second, but is enough that you can feel the car make a slight lurch. Happens regardless of gear:

[ame]http://www.youtube.com/watch?v=bgdxVXlU4xk[/ame]

Any ideas?

DANG, phrosty ....... it must be a slow day in Chicagoland .......:D

I'll guess that the ECU is just slightly bliping the throttle before the engine settles into idle mode. Sort of like bliping the throttle when downshifting...........:popcorn:

Ya'll fire away ..... :)


humfrz

Change all three (cold/warm/hot) pi/di ration tables to be full DI (ie zero in the 0.2/0.3 load columns up to 0.2 load or 0.3 if your auto.


http://www.ft86club.com/forums/attac...1&d=1422886610

see tune tweaks link below for more info

Will try this out, thanks. Steve, you're a machine ;)

Unfortunately changing those didn't do it. I'm going to look for exhaust leaks this weekend, maybe it's that. Praying it's not a bad trans :).

Can any other auto trans owners confirm if they have or don't have this?

Have this on my manual. It sucks when i have full blast ac and it feels like its gonna turn off but it doesnt.

I have this on my 2015 and also have a weird issue occasionally when in reverse with a/c on and the engine is slightly cool it feels like it will stall but catches itself

Just AC compressor cutting in, not a problem, don't sweat it.

Same dilemma different flavor, Idle dip.. read around you'll get bored of seeing it being mentioned. It happens with defrost on, AC on.. reverse.. AT tranny.. nothing has been able to fix that, not dealer reflashes nor aftermarket. although aftermarket tunes have improved upon it. Just one of those things you will never find a fix or if you do by then you'll life will be ruined from all the headaches and sleepless nights trying to fix it. Somewhat like the crickets.

This isn't the idle dip. I know the idle dip well ;)

This is happening at a very specific RPM range, repeatably, with all of AC/defrost/etc. turned off.

hmm.. another dip lol.. anyways keep us posted of any findings. Its always good to document these things for future help. :thumbsup:

If the car doesn't lurch and be uncomfortable, then I wouldn't stress about it.
It looks entirely tranny related, I would say no amount of engine tuning will fix it.