Sticky Accelerator Pedal/Sensor
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Sticky Accelerator Pedal/Sensor - 8/8/2006 11:00:46 AM
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HummerGuy
Posts: 6669
Status: offline
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The past few months I have had a problem with the Accelerator Pedal.
First off, I don't like, and never will like, throttle-by-wire. If I knew the H3 was throttle-by-wire, I MAY have not purchased it. BUT, that would be a dumb reason to give up a car :) (I think it's also called drive-by-wire)
Anyway, what happens is I let off of the gas pedal, and the engine is still revving at 2k rpm. I have a stick, and it happens when I hold down the clutch and let off of the gas while approaching a stop. Sometimes it stays that way for about 5 seconds after I am already stopped, or sometimes never stops unless I press the gas pedal down all the way. It doesnt happen that much, maybe once every few days, but it's enough to make me wonder if it happens to anybody else.
My theory is that the throttle sensor on the gas peddle is sending an inaccurate reading to the computer, maybe because it is dirty, or perhaps the AC is hitting it too much and is causing the metal contacts to contract to the point where they dont touch properly. I'm assuming it uses a variable resistance setup like most potentiometers out there.
Anybody have this problem with their 5-speed or automatic?
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RE: Sticky Accelerator Pedal/Sensor - 8/8/2006 12:42:11 PM
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HummerGuy
Posts: 6669
Status: offline
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Thanks for the info. I kinda figured it had to do with some compensation for the clutch. I know most manual's keep the engine speed up at a ration to match the coasting speed until the car comes to a stop, but this is crazy. They may have programed the computer again. I'll look at my receipt from yesterday and see if they did any firmware updates. I know they like to do those things in the background.
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RE: Sticky Accelerator Pedal/Sensor - 8/8/2006 5:33:05 PM
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ChevyHighPerformance
Posts: 159
Joined: 7/5/2006
Status: offline
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quote:
ORIGINAL: HummerGuy
The past few months I have had a problem with the Accelerator Pedal.
First off, I don't like, and never will like, throttle-by-wire. If I knew the H3 was throttle-by-wire, I MAY have not purchased it. BUT, that would be a dumb reason to give up a car :) (I think it's also called drive-by-wire)
Anyway, what happens is I let off of the gas pedal, and the engine is still revving at 2k rpm. I have a stick, and it happens when I hold down the clutch and let off of the gas while approaching a stop. Sometimes it stays that way for about 5 seconds after I am already stopped, or sometimes never stops unless I press the gas pedal down all the way. It doesnt happen that much, maybe once every few days, but it's enough to make me wonder if it happens to anybody else.
My theory is that the throttle sensor on the gas peddle is sending an inaccurate reading to the computer, maybe because it is dirty, or perhaps the AC is hitting it too much and is causing the metal contacts to contract to the point where they dont touch properly. I'm assuming it uses a variable resistance setup like most potentiometers out there.
Anybody have this problem with their 5-speed or automatic?
No problem with my auto.
The H3 uses dual redundant sensors for throttle position. If there is a disagreement between comanded throttle position and actual position -> Reduced Engine Power. The PCM programming can take care of this.
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