Question about 1996 Toyota Avalon

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Toyota avalon hesitation on acceleration

Toyota starts without problem and idles smoothly for about 30 seconds, then idle begins to slow, and hesitates before shutting down. Pressing acelerator causes the engine to miss badly and shut down.

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Posted on Jan 02, 2017

  • 18 Answers

SOURCE: A 2007 Toyota Avalon XLS.

This is the downfall of a new toyota congrads you can relate to me i Own a 2008 Scion tC these new toyota's are driven by what is called "Drive By Wire Throttle system" there will always be a delay in the throttle response espcially in newer toyota's with an automatic transmission hence the newer ones have a 5 speed automatic transmission instead of the 4 speed automatics kind of a poor design on there end with the Drive By Wire. Sorry this is a problem that happens to be a design flaw on toyota's and some people notice it more than others.

Posted on Jul 22, 2008

  • 2039 Answers

SOURCE: My 1991 Toyota has acceleration hesitation

check rom the air fiter box there a air hose that goes to engine check if that air duck hose is not crack or broken repair with electric tape if broken or crack if everything goes fine after the repair change that hose or leave it like that with a few layer of tape its a cheap repaIR THANKS PIERRE

Posted on Jul 30, 2009

  • 672 Answers

SOURCE: I have a Toyota vista 1998 model. It's hesitating

replace the ingniter~~

Posted on Mar 24, 2010

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SOURCE: throttle hesitation

Sounds like the throttle body is dirty, in my vehicles every three to four tanks of fuel in goes a bottle of heat. Even in the summer I have this ritual monthly. Try this for a couple of months and see if it improves. 

Posted on Apr 03, 2010

  • 151 Answers

SOURCE: What could cause a low rpm hesitation or an

u could very well need a new fuel pump or fuel pressure regulator, or u might just need a full tune-up done

Posted on Jul 07, 2010

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1 Answer

Motor hesitates & bucks after slowing down & then re-accelerating

HMM, it has been awhile since ive worked on that toyota motor. Check for vacuum leaks on hoses and the intake manifold. Check egr system for a dirty pintle leaving the egr stuck open. It will cause bad acceleration and idle quality. A properly closed egr cannot be blown through to the opposite port. Check for a clean throttle plate, if it is not, clean it. If it is a fuel injected engine check for bad fuel injector o rings for wear, if they leak they cause fuel burning and idle problems.

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Fitted new mass air sensor engine now very slow to accelerate


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: -------

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Nov 28, 2012 | Cars & Trucks

1 Answer

O2 Sensor Problem?

yes an o2 sensor can cause those symptoms so can a minor vacuum leak --bad ignition wire -clogging fuel filter --sticking egr valve etc.

Mar 01, 2010 | 1999 Toyota 4Runner

2 Answers

2001 Toyota Avalon quits when at idle

Just had the same problem on the 2002 Avalon. Pulled the throttle body off and removed and cleaned the Idle mixture control valve which was caked in deposits. Runs like new now. About 2 hours of work or less. Common problem with this model I heard. Hope this helps. Some one gave me this info over a year ago and I finally got around to doing it.

May 28, 2009 | 2001 Toyota Avalon

1 Answer

Idle too low on hot starts 2001 Avalon

Sounds like you idle air control valve is going bad. They start acting up on a hot engine due to sticking or high resistance through its internal windings. It will get to the point where the engine will stall every time you take your foot off the gas.
I suggest getting it replaced and the throttle body cleaned at the same time since it will need to be removed to replace the IAC.

Apr 09, 2009 | 2001 Toyota Avalon

1 Answer


+check plug gap adjustment ,25th ,they should be changed around 10.000 miles and if the gap is excessive then this will cause the missing and extreme cases retarded timing ,ok a knats whatsit but with modern fuel and the amount of ethanol it contains ?

Mar 23, 2017 | 1998 Toyota T100

1 Answer

Engine knock

The idle issue is normal. The idle is controlled by the ECU. There are no adjustments for the idle. Regarding the knocking noise, that could be several things, and I am hesitant to comment without hearing it. Take it to a Toyota Dealer & have a tech listen to it. We are very good at identifying noises on the service drive.

Sep 08, 2008 | 2000 Toyota Corolla

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