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your fault code is for Accelerator pedal position sensor/switch E high input. Your vehicle has a drive by wire throttle setup which means there is a wiring loom instead of a cable from the pedal to the engine and the pedal sensor is there to provide the engine ecu with the info of how much acceleration the driver is applying with his foot
there is vital information missing here
to start with it is a v 6 so there will be 2--HO2S sensors one for each bank before the cat converter and 2 --O2ensors --one for each bank after the cat converter
there is a vast difference between HO2s and O2 sensors as each reports different information to the ECM
next slow acceleration can be accelerator position sensor or throttle position motor
every time you read the codes it cancels them so you have to run the vehicle for a few miles for codes to reappear
from the codes there can be up to 7 reasons for that code to appear so you don't pick on the first one as it could be another or a combination of others
Fuel delivery problem, not enough fuel on acceleration could cause backfires. Many things cause backfires, mechanical and electronic. I need more info to give a better diagnosis. Did the problem happen all of a sudden or has the vehicle been running crappy for awhile.
ENGINE HESITATES WHILE ACCELERATION LOSS OF ACCELERATION It can be fuel pressure issue or it's the problem with accelerator pedal or its clogged filters causing there. There are many other possibilities. I suggest you to go through the list of help links mentioned below, these will help you to confirm where the actual fault lies: ------- Jerks and Hesitates During Acceleration? http://technoanswers.blogspot.in/2012/07/2004-dodge-town-country-jerks-and.html ----------- Loss of acceleration? http://technoanswers.blogspot.in/2012/02/loss-of-acceleration.html --------- Headlights flickering and car hesitates to start? http://howtobyme.blogspot.in/2012/02/headlights-flickering-and-car-hesitates.html -------- How exactly the Vehicles Accelerator Cable works? http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-cable.html ------------- How exactly Vehicles Accelerator Pump Diaphragm Works? http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-pump.html -------- 2000 Toyota Avalon: Engine Lean Codes and Knock Sound on Acceleration? http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-engine-lean-codes.html --------- 2004 Toyota Avensis: Acceleration And Deceleration makes noise on Front End? http://whatisbyme.blogspot.in/2012/05/2004-toyota-avensis-acceleration-and.html --------- Wheel hop under hard acceleration? http://technoanswers.blogspot.in/2012/04/wheel-hop-under-hard-acceleration.html -------- 2009 Chevy impala accelerator pedal sensor? http://technoanswers.blogspot.in/2012/02/2009-chevy-impala-accelerator-pedal.html --------- Nissan Pathfinder stalls and bucks on Acceleration? http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html -------- Acceleration lag problem? http://repairhelpcenter.blogspot.com/2012/01/acceleration-lag-problem.html ------------- These details will help. Thanks.
Hi Dwight, It would help to know more about your problem. What vehicle are you referring to? When does the backfire occur, during acceleration, deceleration, at a cruise speed, at idle? It would also help to know what vehicle, what engine and what fuel type? Regards John
first you need to find out why the check engine light is on. Try a parts store and see if they will get the code from the computer that will tell you what sensor is bad. If you have not replaced an oxygen sensor by now that is probably what is wrong. If these are bad for too long you will damage the catalytic convertor and it will rattle when the engine is running. backfiring and no acceleration can come from the 02 sensor since this sets fuel delivery.
check everything you can under the hood your air intake system all of it especially make sure all clamps are tight .. and make sure all vacuum hoses are good and not cracking or broken or just loose . you might run a little fuel cleaner through a tank of gas too cleaning the engine fuel system up some. just a few ideas.. Jerry