Toyota's " Death Pedal " autopsy

[buickfunnycar.com]

Originally Posted by Vegas69

I'd place my money on electrical. The throttle assembly tells the pcm it's at WOT and off to the races. Every part malfunctions. IMO where Toyota dropped the ball was having a back up plan. Most manufacturers have a safety net that won't allow throttle and brake at the same time. At least not above a certain speed. I read they are updating the PCM's to do exactly that, any brake input above say 30mph automatically cut's the throttle to idle.

Ford's systems currently default to idle at any sign of a problem,not WOT like Toyota's seem to do.

[Matt@BOS]

Originally Posted by musclecarjohn

Ford's systems currently default to idle at any sign of a problem,not WOT like Toyota's seem to do.

John, do you know more about this? My dad has an '05 Mustang that has in intermittent engine revving problem. It is an auto and when stopped at a light in drive, it has revved up to 2500 rpms on its own, and wanted to go, despite having a foot on the brake. The Ford dealership refuses to look at the idle air control valve, or anything else for that matter, but just recently hooked up a data logging device to the OBDII port.

Matt

[buickfunnycar.com]

Originally Posted by 69MSA

John, do you know more about this? My dad has an '05 Mustang that has in intermittent engine revving problem. It is an auto and when stopped at a light in drive, it has revved up to 2500 rpms on its own, and wanted to go, despite having a foot on the brake. The Ford dealership refuses to look at the idle air control valve, or anything else for that matter, but just recently hooked up a data logging device to the OBDII port.

Matt

I don't know Matt,but I can ask service for ya.

I don't believe for a minute the pedal is the main issue here,same as I didn't believe the floormat cover up that preceeded it.

[69MyWay]

Originally Posted by musclecarjohn

I don't know Matt,but I can ask service for ya.

I don't believe for a minute the pedal is the main issue here,same as I didn't believe the floormat cover up that preceeded it.

I hear ya...but I have seen first hand how the All Weather mat can absolutely jam the pedal. The sad thing is, many of the complaints are coming from people with no mats in the car at all.

I did see one this week that was a fatality. The really sad thing, in a 2009 Camry the owner had the stock carpet and a aftermarket mat stacked on top.

[69MyWay]

Here is a cell phone pic of a Denso.

In this picture, see the green assembly on the left. In the center there is a square opening. There are a pair of magnets embedded in the square. Look at the assembly on the right. The silver round part in the middle is the sensor. As the pedal is pressed the magnets rotate around the sensor. It is a bit off-set so that the magnetic field can increase on the sensor as the pedal is pushed.

I have noted the magnets appear to be stronger in the Denso.

[Fluid Power]

If it is a sensor issue, what is the purpose of installing the metal shim?

Darren

[James OLC]

Originally Posted by Fluid Power

If it is a sensor issue, what is the purpose of installing the metal shim?

Darren

Dollars vs cents (or sense)

My fear is that if it is a software or sensor issue that there will be a huge over reaction that ends with some stupid law outlawing the modification or alteration of FBW pedals or ECMs across the board.