Throttle NOT responding when driving...Please help!

[wickedford82]

Hi. I have a 1999 F250 SD 7.3. I'm kinda new to diesels and learning as I go along. Once in awhile when I'm driving the truck, I'll get no throttle response. I press the accelerator pedal and get nothing when taking off from a stop. It only lasts for 3-5 seconds then its ok.
I called the dealer and they told me the truck doesn't have a Throttle Position Sensor; I find that hard to believe. But is there one or not? A friend told me it could be the ECM?
These are the codes its giving:

P0122
Throttle/Pedal Position Sensor A Circuit Low Input
P0238 - $
Turbo/Super Charger Boost Sensor. A Circuit High
P1670
Electronic Feedback Signal Not Detected
P0221
Throttle/Pedal Position Switch. B Circuit Range/Performance
P0470
Exhaust Pressure Sensor
P1139
Water In Fuel Indicator Circuit



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[1BADTON]

Did alittle research, dormanproducts 699-201 sensor not sure of the price? call local parts store

[wickedford82]

Which part are you suggesting I replace?


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[1BADTON]

The part number I gave you is the sensor on the gas pedal, start there first and see if that doesn't clear a couple codes.

[wickedford82]

Ok thanks.
I checked Auto Zone and they have Dorman for $139.95 and NAPA has the Echlin brand for $40.50. That's a big difference, so I wonder which is better. I've actually liked NAPA parts better in the past.


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[wickedford82]

I can now 100% confirm that the issue I was having is coming from the IVS (Idle Validation Switch).
So for any future enthusiasts having the same issue; diesels have a IVS (Idle Validation Switch) and APPS (Accelerator Pedal Position Sensor), NOT a TPS.


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[1BADTON]

Wow that was a big difference in price? I think thats what i paid for my dorman pedal, and the cheaper price was just the switch right? Did it solve you problem and how she running now

[wickedford82]

I actually didn't replace the sensor yet, I cleaned it with electrical cleaner first and I haven't been having the issue yet. But of course I'll getting the sensor from NAPA since I trust their parts.


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