Question about 2008 Hyundai Accent

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Hi, At cold start my Accent 2008 is knocking since apprx. a month, i went2 times and dind t hear it ! at the third times the light '' check engine'' went on . teh code of knock sensor

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  • 766 Answers

If you detected the engine knocking and the knock sensor also detected it to the extent it caused the ECM to set a diagnostic trouble code (DTC) then simply replacing the knock sensor was a waste of time and money, a case of shooting the messenger because you don't like the message. If the car is under warranty or guarantee then take it to the dealer for complete diagnostics. Do not under any circumstances be put off by lame explanations that they can't do anything. Take the car to other dealers to get written reports on the car. It is very important to get the reports in writing as this gives you legal protection with regard to the guarantee.

Posted on Apr 29, 2017

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Posted on Jan 02, 2017

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SOURCE: 2000 Hyundai Accent -Engine light

Check the O2 and mass air intake sensors. My girlfriend was having the same problem and not able to pass emissions. I forgot the codes. It will cost ALOT less if you can do it yourself. Relatively simple repair.

Posted on Jul 21, 2008

  • 19 Answers

SOURCE: 99 hyundai accent engine surges and dies at start when cold

There a lot of cuses for this but you need to scan the vehicule before to know what sensor is having troubles, if is too much expensive the scan in your city consider to buy one. I see in ebay a lot of types of OBD2 scanners for $25-30!

Posted on Dec 24, 2008

  • 67 Answers

SOURCE: Engine knock noise on cold startup

these 3.3l engines are equipped with timing chains. if vehicle has prolonged down time, typically more than 4 hours, vehicle makes a chatter until the timing chain tensioners put tension on the chain. you will need them replaced.

Posted on Feb 09, 2009

  • 299 Answers

SOURCE: Replaced 0xygen sensor in 2003 Hyundai Accent 3 Times Not Fixed!

It sounds like you have either a lean or rich condition ocurring,could be exuast leak,vac leak,leaking fuel preasure regulator,cat convertor.At this point would go to dealer for diagnosis.

Posted on Jun 17, 2009

ghost4548
  • 776 Answers

SOURCE: 2005 HYUNDAI ACCENT ERROR CODE 0340 AFTER TIMING BELT REPLACEMENT

Here's what the shop manual says.

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Posted on Jun 28, 2009

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Your problem is with the start circuit from the battery to the starter, or from the ignition switch to the starter solenoid. Check the connections at the starter (the big cable) for tightness.
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When i am in third gear the car engine starts to sound louder, like a motorcuylce not as loud but the noise changes.. it has 60,000 miles just oil changes i have doen on this car, is it time for a tune up...


You hear the engine or the transmission? If is the engine is doing it at all gears, if is only at third gear, is the transmission, change the transmission oil with a 80-90 or higher No. if still make noise, You have to open the transmission for service. Hope that help.

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Knock in the rear end


I say take it back to the dealership!

Jun 20, 2008 | 2008 Hyundai Accent

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