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Throttle issue
02-27-2020, 07:08 AM
Post: #1
Throttle issue
I have a 2014 Chevy Spark, 1.2L, Standard 5 spd., 105,000 miles. There are no lights on, on the instrument cluster or info. panel. The issue is when you are driving; mostly in high gear, and let off the throttle, the engine doesn't return to idle. Sometimes you can even feel it increase. You can also see this and verify it by the tach and Speedo. It usually returns to idle if you step on the brake. This vehicle doesn't have Cruise Control either, so it can't be that.
I have never had it "stick" to where it was pulling the car after the brake was applied. The accelerator pedal always returns as soon as you lift your foot. The pedal doesn't pull down like a vehicle does with cruise control. You can just feel the vehicle trying to keep up speed for sever seconds if you don't apply the brakes. It's very difficult to judge in traffic where you wouldn't normally need to use the brakes.
Anybody have this issue? I'd love to hear the solution before I attempt to track it down on my own! Wink

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Garner

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03-02-2020, 07:30 AM
Post: #2
RE: Throttle issue
Well, a light came on so I thought I might have a clue. It said: Code 82. So I looked that up. Code 82 is just a reminder that it is time to change your oil. So that was not helpful. So I'm still looking for any helpful suggestions or anyone who has already dealt with this issue.

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Garner

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03-08-2020, 12:28 PM
Post: #3
RE: Throttle issue
Had to go looking for this post manually as the "new posts" function doesn't seem to work on my end.

You didn't mention if this was a drive by wire or throttle cable, but I suspect it's a cable because this is a base model. That said, I would first be looking for any binding or slow return when hand operating. The next thing is maybe checking engine mounts to see if anything can pull with engine motion. Then of course we have emission controls. Recalling back 30 years ago Nissan used a vacuum operated gadget to do what an old fashion dash pot did, but instead of holding the throttle open a tad, it used a modulated vacuum leak around the throttle plate. In those days it was mounted on the inside fender with long hoses, but it could be anywhere... or even electronically controlled, and look like a mixture solenoid with one or more wires attached... or... it's may even be part of the auto-idle within the throttle body.

What I would do is remove the intake boot and clean the throttle body plus all of the side passages, then see what happens.
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03-10-2020, 06:56 AM
Post: #4
RE: Throttle issue
I took a quick look around yesterday while changing the oil. No throttle cable. Drive by wire. I didn't have time to do anything else yet. I'll clean the throttle body as soon as I can.

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Garner

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