2012 Scion tC Idle problem!!

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02-21-2014, 01:07 PM

#21

criminaltc

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Haha. Don't install a torque damper, it will make it worse! Haha.

02-21-2014, 02:05 PM

#22

russiankid

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I don't see why a dealer would replace motor mounts at 16k if they're not bad.

02-22-2014, 01:02 AM

#23

jlmd

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I regularly experience the idle speed dropping to around 500-550 when stopped. Most times it is when the HVAC is in defrost setting.
The ECU will cycle the AC clutch on/off when in defrost which will cause the RPM to drop at idle.

I drive a tC and I'm a Toyota/Scion technician. I doubt there is anything wrong with your car.

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Last edited by MR_LUV; 02-20-2021 at 04:28 AM. Reason: Awarded 5 Yr Badge

02-24-2014, 11:54 AM

#24

criminaltc

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I mean, yeah, the RPMs are about right, it's just the shaking he's talking about. But that's all relative. He might be noticing regular vibrations and assume its a bad thing. We can't tell how bad it is.

02-25-2014, 06:39 AM

#25

efluis

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Quote:

Originally Posted by jlmd

I regularly experience the idle speed dropping to around 500-550 when stopped. Most times it is when the HVAC is in defrost setting. The ECU will cycle the AC clutch on/off when in defrost which will cause the RPM to drop at idle.

I drive a tC and I'm a Toyota/Scion technician. I doubt there is anything wrong with your car.

Sometimes I can hear (which sounds like the ABS pump) pumping really loud I guess you can say.

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Last edited by MR_LUV; 02-20-2021 at 04:31 AM. Reason: Awarded 5 Yr Badge

02-26-2014, 11:57 AM

#26

criminaltc

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idler

02-26-2014, 03:39 PM

#27

russiankid

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Can you get a video of your tach, then pop the hood and show the engine? If you're really experiencing such vibrations, we will probably be able to see the motor vibrating in a video.

02-20-2021, 03:27 AM

#28

MATremblay

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Quote:

Originally Posted by jlmd

I regularly experience the idle speed dropping to around 500-550 when stopped. Most times it is when the HVAC is in defrost setting. The ECU will cycle the AC clutch on/off when in defrost which will cause the RPM to drop at idle.

I drive a tC and I'm a Toyota/Scion technician. I doubt there is anything wrong with your car.

I can confirm this!

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Last edited by MR_LUV; 02-20-2021 at 04:32 AM.