Originally Posted by hdoggtn
we had the same problem but just happened all at once yesterday while driving home went to stop at a stop sign and the engine was staying revved up but then went back to idle. but when we started to go through the intersection the cable broke. I talked with mazda service dept. and they said they have never had one brake before and has never heard of this happening but said they will fix it for full price as it has been replaced for the defect in 05.
I had a problem with the sticky throttle but was only at take-off, the wagon also needed new spark plugs. In an attempt to change the plugs I removed the manifold which gave me easier access to the plugs at the rear of the motor. I had the manifold on my work bench and found there was carbon deposits around the butterfly vavle (throttle plate) which was causing the valve to stick, I used a good carb cleaner (CRC or equivalent) to remove the carbon deposit. After the cleaning and a bit of elbow grease the valve opened like a dream. The wife was very impressed her sticky accelerator was no more. Having the manifold out made this task a lot easier to do. Unless you know what you are doing my suggestion would be is to take the manifold out and give it a good clean, and use a good quality carb cleaner. There was carbon deposits throughout the manifold and valve inlets which was quite crusted up, with the manifold out I gave everything a good clean.