Only when it is raining does this happen. Once it did it to me when I washed the frame and got it wet and three times to my driver in the rain. Go pedal does nothing. Wait a few seconds and it will catch again. Trying to recreate the problem with a spray bottle and I cant get it to do anything. Does anyone know where the grounds are for the sensors? I have found it is supposed to be wire 457 but cant find its termination point. Hoping that is all it is.
thanks
3406e Dead Pedal
Discussion in 'Trucks [ Eighteen Wheelers ]' started by milesengineer, May 22, 2013.
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Put a plastic bag over the ecm
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Depending on chassis, but most ECM's ground at frame inside by starter. Peterbilt has a problem with the ground wire at back of block corroding out inside the connection. Pull on the wires to the throttle position sensor to ensure they are tight. You could have a sensor going bad. They have a gold bar that the rheostat runs across and can wear through the contact. Have someone check the sweep of your Throttle position sensor for a bad spot or if it is going over the stop point and temporarily shutting fuel off while it resets.
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Had same problem, finally found bad wire connection inside at the floor pluging into throttle position senson pedal.
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Flightline, did it do it on cruise as well? My driver says it has done it one time on cruise but I never experienced it. Did you replace the tps?
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I don't know if it did it on cruise but I doubt it would effect the cruise. Went to replace the TPS when I found the bad wire. I fixed the wire and haven't installed the new tps since. Been keeping it in the sidebox just in case besides can't return it.
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