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Hello, I'm Jason. I will do my best to answer your question quickly and accurately using the information you have provided.
Now are you saying that the throttle pedal feels significantly different than it usually does?
Ok, not a very common failure, but it sounds like the throttle pedal assembly has failed. Essentially, your throttle pedal acts as a sort of light dimmer switch in your house....
and it has an internal spring to keep it taut
So the throttle pedal sends a signal to the engine computer, which then tells the throttle plate in your engine to open accordingly
where is it located
the pedal? it's the part your stepping on
is the car an automatic or manual transmission?
no the assembly spring, does it just sit below the pedal. Also, would this cause the epc light to come on?
The spring is part of the pedal assembly. Not available separately.
Now EPC stands for Electronic Power Control
another word for the whole pedal/throttle body accelerator system in VW/Audi cars
so if there is a fault with any of the components in the pedal/throttle body, the EPC light will come on, and the car will go into what is called "limp home" mode
which is exactly what you're experiencing right now
if you can tell me if your car is an automatic or manual, I can give you an idea of replacement cost
Pedal assembly part number is XXXXX 723 503P, costs $177, and takes about an hour for a mechanic to replace. Also the mechanic will have to program the pedal to the car
autozone check engine light reading gave several codes, one was
P065- ecm relay control circuit open. Is this all related to the same issue
P065 is not a valid fault code. They read like Pxxxx - 4 digits
completely separate system. That's related to the main relay for the engine control module
and one that would take some hands on work to diagnose
I would start with the pedal replacement first, clear faults, see if it comes back
i had the spark plugs changed right before the pedal failed could this be related to pedal or ecu problem
not very likely, no
glad to help