Car won't Rev by the pedal and revs itself from 800-1200 rpm, epc light is on
Brings up codes saying throttle sensor 1&2, throttle pedal,throttle body and both lambada sensors have been replaced, if I clear the codes the car will idle and Rev but is very dead, epc light clears but comes on right away again, thanks
Hi Johnny Crawford, I want to help you with your question, but I need more information from you. Can you please add details in the comment box?Hi Johnny Crawford, I want to help you with your question, but I need more information from you. Can you please add details in the comment box?
If I turn on the ignition I can hear the butterfly in the throttle body move but when I start the car it's closes and will not move with the pedal, when the car starts it revs it self from 800-1200 rpm and runs a bit rough, if I erase codes with the code reader she will idle and Rev with the pedal and has no power and the epc light stays on, when I read the fault codes it always brings up throttle position sensor 1 and throttle position sensor 2 but the throttle body and throttle pedal have both been replaced and there was no change, thanks for your helpIf I turn on the ignition I can hear the butterfly in the throttle body move but when I start the car it's closes and will not move with the pedal, when the car starts it revs it self from 800-1200 rpm and runs a bit rough, if I erase codes with the code reader she will idle and Rev with the pedal and has no power and the epc light stays on, when I read the fault codes it always brings up throttle position sensor 1 and throttle position sensor 2 but the throttle body and throttle pedal have both been replaced and there was no change, thanks for your help
With care warmed up and idling, disconnect the tips. Wait a few seconds and reconnect it. It should then adjust itself.With care warmed up and idling, disconnect the tips. Wait a few seconds and reconnect it. It should then adjust itself.
Sorry, this phone likes to autocorrect when there's nothing to correct... at idle, disconnect the throttle position sensor...Sorry, this phone likes to autocorrect when there's nothing to correct... at idle, disconnect the throttle position sensor...
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Accelerator position sensor may be glitchy (these vehicles use a 'fly by wire' throttle body control system). If no fault codes can be pulled from the ECU, I'd check the throttle pedal and maybe consider replacing it.
Most likely if you have the model that is drive by wire aka electronic throttle body the 9 times out of 10 your gas peddle is on it last legs replacing it will most likely solve your issue with epc light comming on
The 102 code is a Mass Airflow sensor circuit code. It saus the voltage output was below expected.
the 322 is a crak sensor/RPM sensor code saying it didnt see it on at least 1 occaision when expected.
The crank sensor code can be accidentally triggered by long cranks, low battery, or stalls and there may be nothing wrong with the crank sensor.
The MAF sensor code can be caused by a defective MAF, a large air leak downstream of the MAF or in the PCV system causing the MAF to miss sensing too much of the air thats going in and therefore reading low voltage compared to RPM and Throttle position.
Any time the MAF is reading wrong, due to an airleak, timing issue, or defective MAF, an EPC lamp will follow. This just means that the accelerator pedal was in a certain position (wherever you pressed it) and the computer expects a certain MAF reading and a certain throttle reading and a certain RPM and LOAD reading all to match together. If any of them is too far off, you get an EPC light warning you the pedal didnt match something else that was expected.
If the crank code doesnt return after clearing, ignore it for now. The MAF code should be checked 1st with leak tests or smoke tests by a competent mechanic. If you SEE any loose, broken, or cracked hoses with a visual test; you can reattatch or repair those and hope for the best and it may be OK. If you dont see an obvious hose leak, you will likely need to replace something that is causing readings of 2 sensors to mismatch. COuld be the PCV/Oil seperator, throttle body, pedal sensor, or MAF. Guessing could get very expensive very quickly, so my recommendation is have a professional check it properly.
pass the scanner/computer for better diagnostic. DO not waste your time and money. The electronic in the car now is very complicated. MAYBE the computer BCModule can be faulty. God bless you
epc is short for electronic pedal control, the throttle is controlled by an electric motor and has two angle sensors in the throttle body. the pedal it self has two sensors as well, sometimes after a battery replacement or replacement of certain parts (ecm throttle body pedal controls) the control modules need to be reset or "relearned" to one another. the dealer or independent shop with correct softwear can do this, if problem persists possible bad throttle body pedal sensors or ecm (engine control module)
first off.... does the engine over rev on its own? or only after you press the gas pedal?
does your vehicle have a throttle body that is electronic or cable actuated?..if electronic and revs on own could be one of two issues 1) throttle body itself 2)throttle pedal switch on gas pedal)
if cable and revs after pushing gas pedal ..either there is too much carbon built up on the throttle plate or the throttle cable has begun to fail.. remove the intake tube from the air cleaner to the throttle body and inspect
disconnect the throttle cable from the throttle body and try to rev the engine
if still cannot rev past 2000 then suspect MAF (mass air flow sensor) or the throttle body...remove the snorkel and check to make sure the throttle plate is moving freely
finally, if when the accelerator cable is removed and rpm's rise above 2000 then suspect the accelerator cable and/or gas pedal
Hi Johnny Crawford, I want to help you with your question, but I need more information from you. Can you please add details in the comment box?
If I turn on the ignition I can hear the butterfly in the throttle body move but when I start the car it's closes and will not move with the pedal, when the car starts it revs it self from 800-1200 rpm and runs a bit rough, if I erase codes with the code reader she will idle and Rev with the pedal and has no power and the epc light stays on, when I read the fault codes it always brings up throttle position sensor 1 and throttle position sensor 2 but the throttle body and throttle pedal have both been replaced and there was no change, thanks for your help
And it's a 2002 1.2 12valve 3 cylinder seat Ibiza if that helps
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