scion frs 16 shaking. help! - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

sly · 10-04-2016, 03:34 AM

If your A/C or defroster is on when you start your car, it will shake worse. Your car is in open loop mode when it is cold, meaning it is receiving no feedback from some of the sensors. It goes by a pre-programmed map to determine engine parameters. It doesn't always get it right. When you run the A/C or defroster you drain power off the engine and it has trouble compensating. If this is the case, turn off your A/C and see if the engine runs smoother.

It's a small displacement 4 cylinder. Shaking is going to be normal.

Kana · 10-15-2016, 05:13 PM

unfortunately it still shakes, usually shakes when im making a turn, left or right. everytime im on a stop, turning it shakes. anyways i made an app. with toyota i will be leaving the car there. thanks everyone!

sly · 10-16-2016, 12:10 AM

Does it start normally or does the engine turn over slowly? Do the lights dim when you hit the brakes? Could be a weak battery or faulty charging system. This car has an electric power steering system and when you turn the wheel, it will draw power off the battery. If the battery is weak, the car will shake.

Another possibility is you have a problem in the transmission or the torque converter. If the torque converter is not stalling out properly when you are sitting still, it will drag on the transmission and bog down the engine. In other words, your transmission may not be disengaging when it should and is taking power from the engine. Let us know what Toyota says.

jawn · 10-16-2016, 12:22 AM

This has to be shitposting right?

Ultramaroon · 10-16-2016, 12:26 AM

Quote:

Originally Posted by Kana

unfortunately it still shakes, usually shakes when im making a turn, left or right. everytime im on a stop, turning it shakes. anyways i made an app. with toyota i will be leaving the car there. thanks everyone!

What? OMFG. If you had mentioned turning in your OP...

It's the Torsen diff. Normal.

Joyride86 · 10-16-2016, 01:52 PM

Ultramaroom is right. It's more like a light buzz/ vibration coming from the rear rather than saying your whole car shakes. You're kind of blowing things out of proportion.

Stang70Fastback · 10-16-2016, 03:23 PM

Yeah. Sounds like normal "cold LSD" symptoms, and perfectly normal. I agree with Ultramaroon. It's normal for this differential to bind a little bit before it warms up.

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10-04-2016, 03:34 AM	#15
sly Senior Member Join Date: Dec 2015 Drives: 2016 Cosworth 2.2 BRZ Location: TN Posts: 302 Thanks: 81 Thanked 185 Times in 112 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	If your A/C or defroster is on when you start your car, it will shake worse. Your car is in open loop mode when it is cold, meaning it is receiving no feedback from some of the sensors. It goes by a pre-programmed map to determine engine parameters. It doesn't always get it right. When you run the A/C or defroster you drain power off the engine and it has trouble compensating. If this is the case, turn off your A/C and see if the engine runs smoother. It's a small displacement 4 cylinder. Shaking is going to be normal.

10-15-2016, 05:13 PM	#16
Kana Member Join Date: Sep 2016 Drives: auto 2016 frs Location: nor cal Posts: 22 Thanks: 9 Thanked 9 Times in 4 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	unfortunately it still shakes, usually shakes when im making a turn, left or right. everytime im on a stop, turning it shakes. anyways i made an app. with toyota i will be leaving the car there. thanks everyone!

10-16-2016, 12:10 AM	#17
sly Senior Member Join Date: Dec 2015 Drives: 2016 Cosworth 2.2 BRZ Location: TN Posts: 302 Thanks: 81 Thanked 185 Times in 112 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	Does it start normally or does the engine turn over slowly? Do the lights dim when you hit the brakes? Could be a weak battery or faulty charging system. This car has an electric power steering system and when you turn the wheel, it will draw power off the battery. If the battery is weak, the car will shake. Another possibility is you have a problem in the transmission or the torque converter. If the torque converter is not stalling out properly when you are sitting still, it will drag on the transmission and bog down the engine. In other words, your transmission may not be disengaging when it should and is taking power from the engine. Let us know what Toyota says.

10-16-2016, 12:22 AM	#18
jawn Senior Member Join Date: Jun 2015 Drives: 2015 CWP BRZ Limited Location: NOVA Posts: 2,800 Thanks: 1,801 Thanked 3,946 Times in 1,757 Posts Mentioned: 105 Post(s) Tagged: 7 Thread(s)	This has to be shitposting right?

10-16-2016, 03:23 PM	#21
Stang70Fastback A.K.A. Starlord Join Date: Oct 2013 Drives: 2015 Series.Blue Location: Illinois Posts: 1,842 Thanks: 845 Thanked 2,099 Times in 834 Posts Mentioned: 30 Post(s) Tagged: 3 Thread(s)	Yeah. Sounds like normal "cold LSD" symptoms, and perfectly normal. I agree with Ultramaroon. It's normal for this differential to bind a little bit before it warms up.

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