Question about 2007 Toyota Yaris

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Yaris / Vitz 3 Cyl 999 CC Engine Noise

I love my Vitz / Yaris in every way, shape, handling, feel, facilities, economy etc. There is ONE loud snag only. Its engine 'roars', and I found it has 3 cylinders, compared to 4 cylinders on older Vitz 990cc. The noise and vibrations coupled together are irritating me. A friend had an extra MUFLER installed; the workshop I go to recommend removing Catalytic Converter and installation of a mufler instead. They say this will improve pick up, which is not bad already. Its just the noise, which is like a 'diesel' car. Please help or comment.
Najib

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  • Anonymous Mar 06, 2009

    I am having the same problem with my 2009 Yaris Sedan. I don't know what to do, I need some help to!!!!!!! I just bought it a few days ago and the dealers will not take it back. Please let me know what you end up doing. Thanks!

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6 Suggested Answers

  • 57 Answers

SOURCE: Mufler/Exhaust

I recommend headers, with 2 1/2 inch true duel pipes, feed it to an aftermarket cat, a must have, with all O2 sensors, then run Your pipes into some cherry bomb glasspacks, then run it out to either comming out just in front of or just behind the tires, with a turndown right before the quarterpanel wall.

Posted on May 14, 2008

  • 6982 Answers

SOURCE: My 1997 Jeep Grand Cherokee problem is, having

Have you checked the rotor, cap and ignition wires? any cross-fire there will cause backfiring.

Posted on Mar 18, 2009

jmgldsmth
  • 1869 Answers

SOURCE: 2000 Honda Accord - very loud road noise

caster,camber and, wheel bearings
have your car 4 wheel aligned this will adjust your rear caster and, camber.
have your wheel bearings checked

Posted on Sep 06, 2009

  • 1857 Answers

SOURCE: can a bad catalytic converter ruin a cylinder?

NO, a cat only cleans up pollutants. It has no effect on engine performance unless you have a misfire and the cat works overtime and melts and cloggs the exhaust system. If your blowing grey smoke out the tailpipe then you indeed may have a bad engine. What I would want to know from the mechanic is what is the compression and why he thinks its a lower engine issue rather than a leaking valve on the head which would be alot less expensive to repair. Then again you could get a second opinion from another shop. Mechanic shops are known for gouging customers wallets, Not that i'm implying anything here.

Posted on Jul 31, 2010

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  • 12 Answers

SOURCE: Manual for toyota vitz(yaris) 05

It's English software is not yet released.as i get solution i will post it on my blog

http://navigation-problems.blogspot.com

Posted on Sep 06, 2010

duane_wong
  • 6826 Answers

SOURCE: Looking for the OBDll connector

Look under the dash near where the steering wheel is usually located (on the driver's side).

Was this vehicle marketed in the U.S.?
1996-97 MODELS NOTE: These models require the use of the Toyota's hand held scan tool or an equivalent OBD II compliant scan tool.

  1. Prepare the scan tool according to the manufacturers instructions.
  2. Connect the OBD II scan tool, to the DLC3 under the instrument panel. The DLC3 on the 1996-97 models is located on the drivers side under the dash 88274pa2.jpg
    NOTE: When the diagnosis system is switched from the normal mode to the check mode, it erases all Diagnostic Trouble Codes (DTC) and freeze frame data recorded. Before switching modes, always check the DTC and freeze frame data and write them down.
  3. Turn the ignition switch to the ON and switch the OBD II scan tool switch on.
  4. Use the OBD II scan tool to check the DTC and freeze frame data. Write them down.
  5. Compare the codes found to the applicable diagnostic code chart. If necessary, refer to the individual component tests in this section. If the component tests are OK, test the wire harness and connectors for shorts, opens and poor connections.
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Posted on Oct 05, 2010

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