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The sound goes away after either keeping my foot on accelerator or off completely. After just getting an oil change, they said I have build up on the throttle body. Can this be the cause of the faint noise i am hearing? They suggested a fuel system cleaning.

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Yes clean the throttle body with throttle body spray cleaner and an old tooth brush with a terry cloth. Take air intake hose off of the throttle body assembly open the throttle body, spray cleaner all around on the inside, use an old tooth brush to scrub the grime and wipe clean with a terry cloth. Repeat until cloth shows clean.

Posted on Jul 31, 2013

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Posted on Jan 02, 2017

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SOURCE: upon start up, have what sounds like valve train noise

SOUNDS THAT YOUR TAPPETS ARE NOISEY COULDN'T TELL YOU IF ARE ADJUSTABLE OR THEY ARE HYDRAULIC TAPPETS NEED TO REFER TO HYUNDAI.

Posted on Dec 17, 2008

  • 3 Answers

SOURCE: no acceleration

I had the same problem with one exception. It would rev higher than 3500 but the higher it revved the more it bogged. I had the catalytic converter replaced. I thought I bought a new car. Acceleration is just like new. It was easy enough to test. My mechanic cut a hole in the exhaust pipe in front of the catalytic converter. It sounded like a truck but the acceleration difference was immediate. Easy diagnosis.

The car is hard to shift because the more you press on the accelerator the more the computer for the transmission won't let it shift. Which in turn causes the car to bog more sending more unburned fuel into the catalytic converter. Which in turn causes more carbon build up and more back pressure. Vicious cycle. It will only get worse.

My thermostat caused the entire problem. Thermostat was stuck open, engine never got to operating temp most days. Car burned rich. Bad gas mileage. A lot of unspent fuel being dumped into the converter. Probably have some underlying cause that needs to be addressed. Bad plugs, wires, coil, fuel filter.

Posted on Jan 21, 2009

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SOURCE: Engine Rattling

Try checking the heat shield on your exhaust system. You should have one over the manifold and one over your cat converter under the car.

Posted on Mar 25, 2009

alicantecoli
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SOURCE: I have a 03 gmc envoy. My reduced engine power

sensors on the pedal?? not sure what you mean by paddel though never heard of this term before

Posted on Dec 14, 2009

Testimonial: "03 Envoy:My reduced engine power keeps happening. My car goes 20 mph. Changed throttle body, pedal, wiring. Need new thermostat. Car not heating up."

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SOURCE: 1994 honda civic 1.5 16v stalling after pressing accelerator from idle

Another place to look is your IAC, or Idle air control valve. It is bolted to the back of the intake manifold, and can be removed and cleaned. It is usually the cause of most Honda Idle problems.

Posted on Apr 18, 2010

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