My life with the EPC light on
11-01-2006, 06:12 PM
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My life with the EPC light on
So as you may know my car had a little electrical fire that took out my ecu and cruise control, controls. I ended up replacing the ecu but I'm having trouble with the throttle. The EPC lights on and I only have 32.5% throttle.
Well today I had to get the car up to my dad's shop which is about ten miles away today. Well it was an embarrassing moment for me I was passed by a ford windstar and a Saturn...what a sad day.
Unfortunately the day just got worse. I replaced the throttle pedal in hopes that it would fix the problem, but it did nothing
So I have a used throttle body that's going to be coming in Friday, I hope this fixes the problem...if it doesn't I'm kind of **** out of luck...does anyone have any suggestions of what else to check out?
Well today I had to get the car up to my dad's shop which is about ten miles away today. Well it was an embarrassing moment for me I was passed by a ford windstar and a Saturn...what a sad day.
Unfortunately the day just got worse. I replaced the throttle pedal in hopes that it would fix the problem, but it did nothing
So I have a used throttle body that's going to be coming in Friday, I hope this fixes the problem...if it doesn't I'm kind of **** out of luck...does anyone have any suggestions of what else to check out?
11-01-2006, 06:48 PM
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Yes, I keep getting these codes:
18047 - Accelerator Position Sensor 1/2 (G79/G185): Implausible Signal
18042 P1634 Accelera.Pedal Pos.Sensor 2 Signal too High
These codes didn't go away when I replaced the throttle pedal assembly either...
18042 P1634 Accelera.Pedal Pos.Sensor 2 Signal too High
These codes didn't go away when I replaced the throttle pedal assembly either...
11-01-2006, 07:38 PM
#6
so did you check the pedal sensor's calibration?
What I'm getting at...
There is a steering angle sensor that needs to be re-zeroed/calibrated after heafy duty front end work. The Pedal position sensor, I think, would also need to be recalibrated when other parts or work are done.
Check on the VAG forum or right at RossTech.com you may find the procedure.
There is a steering angle sensor that needs to be re-zeroed/calibrated after heafy duty front end work. The Pedal position sensor, I think, would also need to be recalibrated when other parts or work are done.
Check on the VAG forum or right at RossTech.com you may find the procedure.
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11-03-2006, 06:25 AM
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On EPC
It wounds like you had a fire with some tangible damage, so my experience may not help.
On my 00 S4, I had recurring EPCs, with the consequent limp mode. My codes were almost all "implausible throttle angle".
After Audi told me to begin relacing $1000 parts (thge sender and the stepper motor assembly), I declined and did some thinking. I postulated that like old carbon-composition potentiometers, repeated use could build up a line of dirt causing nboise or impeding smooth action.
So I did two things:
1. cleaned the TB with gummout
2. drove the car in such a way that I frequently applied full (WOT) throttle, inorder to move the various parts thorugh their full range of motion, and through any accumulated deposits.
It worked. Problem gone. I continued to apply "preventative maint" by applying WOT regularly (hgih gear - not accelerating fast, just moving the parts). never recurred.
Just food for thought.
Grant
On my 00 S4, I had recurring EPCs, with the consequent limp mode. My codes were almost all "implausible throttle angle".
After Audi told me to begin relacing $1000 parts (thge sender and the stepper motor assembly), I declined and did some thinking. I postulated that like old carbon-composition potentiometers, repeated use could build up a line of dirt causing nboise or impeding smooth action.
So I did two things:
1. cleaned the TB with gummout
2. drove the car in such a way that I frequently applied full (WOT) throttle, inorder to move the various parts thorugh their full range of motion, and through any accumulated deposits.
It worked. Problem gone. I continued to apply "preventative maint" by applying WOT regularly (hgih gear - not accelerating fast, just moving the parts). never recurred.
Just food for thought.
Grant
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