I have a 2001 beetle with 112k on it, no problems til 100k now it's all the time, the epc light came on and did all the funky stuff that came along with a faulty switch, replaced it ran fine for a day now the lights back on and the check engine light is on, when at idle it goes from 5000 rpms to 3000rpms to 6000rpms, any suggestions?
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I suspect a bad alternator and/or a bad battery. First of all you need to access the Engine Control Module (ECM) using suitable diagnostic equipment connected to the data link connector of the car, in order to pull out all DTC's memored. DTC = Diagnostic Trouble Code. Then you will bu full informed about the root cause of the problem, and you will be able to repair & replace bad pieces and reset the ECM. Then the EPC (Electronic Pedal Control) yellow light will turn OFF. The check engine light:
First of all you need to access the Engine Control Module (ECM) using suitable diagnostic equipment connected to the data link connector of the car, in order to pull out all DTC's memored. DTC = Diagnostic Trouble Code. Then you will bu full informed about the root cause of the problem, and you will be able to repair & replace bad pieces and reset the ECM. Then the EPC (Electronic Pedal Control) yellow light will turn OFF. The check engine light:
I am having the same problem with my beetle, does another triangular light come on at the same time?
I'll be watching to see how this gets answered. My car is in the shop now and other than EPC meaning the Electronic Powertrain Control, the mechs can't help me because they can't catch it with the light on to get the codes.
Today the check engine came on along with the EPC, so tomorrow I hope to have an answer. I'll be sure to let you know.
It sounds like your alternator is not charging. You may want to have it tested and replace/rebuild it if necessary. Many times the problem is that the brushes are worn in the alternator and it stops charging correctly. The brushes are usually attached to the voltage regulator and are replaceable if you have the parts and skill. You can also replace the voltage regulator/brush assembly as a unit.
Many parts stores will test your alternator for free.
I had this same problem on my 2001 Beetle. The EPC light refers to the Electronic Pedal Control that disengages the shift lock when you depress the brake. On the beetle there was a recall on this part for replacement and it is recommended that you take it to a dealer for free replacement. If you cannot get to a dealer, the part is about $10 - $20 at pep boys (or any other parts store).
The trick to getting the EPC to engage correctly if you cannot get the car going is to go under the drivers side in front the brake pedal arm where the sensor is located (this is a plastic or metal plunger that the pedal rests against and is easy to spot) and depress the brake with one hand and the sensor with the other and release quickly. It may take a few times, but this should disengage the EPC lock. You should hear an audible "thunk" which will indicate that it worked.