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Power Loss - Issues with Throttle Response

Old 03-22-2019, 09:40 PM
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Default Power Loss - Issues with Throttle Response

Hello,

I have a 06 Scion xA Manual Transmission.
I'm having issues with throttle response when I need to go fast.
If I'm just cruising around at low speeds I do not experience any issues. (Usually in the lower RPM's going up).
However, when I need to get going quickly, when I shift into the next gear and have the gas pedal floored...
The car revs up high, but the power is no longer there, it takes a second for it to start moving.

I've changed the spark plugs, ignition coils, fuel pump, fuel filter, fuel regulator and have cleaned the MAF sensor and Air Filter and have ran SeaFoam through it.
The fuel injectors seem fine.
My cousin mentioned the clutch might be going out, but I don't believe that to be true as I'm not experiencing any other issues related to the clutch or shifting for that matter.
No check engine or error codes.

Any thoughts or suggestions?

Last edited by Steven4x4; 03-22-2019 at 09:55 PM.
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Old 03-23-2019, 11:13 AM
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Originally Posted by Steven4x4 View Post
However, when I need to get going quickly, when I shift into the next gear and have the gas pedal floored...
The car revs up high, but the power is no longer there, it takes a second for it to start moving.
Sounds like your clutch is slipping. When this happens, do you smell anything awful? A slipping clutch smells just like over-heated brakes.
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Old 03-23-2019, 11:29 PM
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No - Nothing smells.

However, if we take the shifting out of the equation.
Say, I'm in 3rd gear at 2.5-3 RPMs, if I try to floor it, the same thing happens, high rev, then a delayed throttle response.

So, I don't think that shifting is really even part of the problem anymore.
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Old 03-24-2019, 11:39 AM
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Originally Posted by Steven4x4 View Post
No - Nothing smells.

However, if we take the shifting out of the equation.
Say, I'm in 3rd gear at 2.5-3 RPMs, if I try to floor it, the same thing happens, high rev, then a delayed throttle response.

So, I don't think that shifting is really even part of the problem anymore.
There's only two ways RPMs go up quickly in a standard transmission with the clutch engaged. The desired way is the car accelerates as fast as the gearing will allow. The other way is the clutch slips. From what you've described, you have the latter. Take it to a competent shop and have them drive it before you waste any more money throwing parts at it that it doesn't need.
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Old 03-24-2019, 02:33 PM
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Originally Posted by 2stroked View Post
Take it to a competent shop and have them drive it before you waste any more money throwing parts at it that it doesn't need.
Excellent advice and I'd agree that you have a slipping clutch...
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Old 03-25-2019, 05:29 PM
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Thanks for all the feedback.
I'm not familiar with the term "Component Shop". Is there another name for it?
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Old 03-25-2019, 07:30 PM
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Originally Posted by Steven4x4 View Post
Thanks for all the feedback.
I'm not familiar with the term "Component Shop". Is there another name for it?
Competent shop. That's a shop that knows what they're doing.
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Old 03-25-2019, 07:42 PM
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Oops - That's embarrassing. Thanks for the correction.
Thanks for your help!
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Old 03-25-2019, 09:55 PM
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Originally Posted by Steven4x4 View Post
Oops - That's embarrassing. Thanks for the correction.
Thanks for your help!
No problem. Let us know what you find.
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Old 05-27-2019, 04:39 AM
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Clutch - nothing else.
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