daytona701 wrote:
I started reading this thread and realized I had 2 runaway engine episodes in the last week. First was at a stop sign when the etc light came on and I had to look in the owners manual to figure out what it was because I never saw it before. With the Jeep in park I pressed the accelerator and it stuck. Turned the key off instantly to stop. Amazing how fast the engine can redline. Second time after the accelerator was reinstalled when I tried to lubricate the pivot point of the pedal. I was on my knees leaning under the dash with the door open pushing on the pedal with my hand when it stuck again. Turned the key off again. Good to know the ecm doesn’t have rev limiter. Ordered a new throttle pedal from Idparts. Do the pedals fail often and is Idparts the only vendor? Didn’t see one on Sasquatch. Starting to realize I may have to become a electronics expert if I keep the Jeep.
IDparts is the primary source for CRD parts - many of the things that Squatch sells come from IDparts first anyway. The accelerator pedal is a "drive by wire" design as you discovered, the problem isn't one of lubrication, it is that the variable electronic potentiometer (and there are two of them) got out of agreement and that is why the ETC light came on the first time. When you pressed on the accelerator, the computer misinterpreted the results and one of the two sensors somehow was listened to by the computer which thought you had floored the pedal. The same thing happened the second time.
NEITHER of these incidents was a "runaway" where the engine was NOT OPERATING ON DIESEL FUEL but was instead powering itself from another source. What you had happen was a computer malfunction due to a bad pedal assembly. This has been a fairly rare occurrence on these Jeeps and on most other vehicles on the road, even as most vehicles have the same kind of drive-by-wire system.
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