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Toyota avensis acceleration problems


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my 05 Avensis d4d tspirit runs fine when cold but as soon as it gets warm will not accelerate below about 3000 rpm once it gets above this it runs as normal, whilst its struggling to accelerate it does produce some smoke but not large amounts  and once it picks up does not smoke any idea's? have changed fuel filter and air filter no engine lights on

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Classic case of a dirty or faulty EGR valve. First step is to clean it, solves 99% of the issues.

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  • 2 weeks later...

as above, could be not totally shut due to carbon build up thus boost pressure escaping until revs/pressure overcome the boost leak rate..

any other boost leak is also possible wether it from a pipe or intercooler

warm air is less dense than cold air maybey explaining how its better when cold...

 

also could also be scv performing better when cold / cold fuel 

 

or -duff injector leaking when warmed up

 

or turbo bad 

 

is it black smoke / overfuelling ?

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  • Devon Aygo changed the title to toyota avensis acceleration problems
  • 2 years later...

my 05 Avensis d4d tspirit runs fine when cold but as soon as it gets warm it’s rpm starts to flunctuate and as soon as it gets to a U turn will not accelerate once it’s ac is turned off, it runs as normal, and once it picks up, I turn on the ac back. any idea's? have changed fuel pump and cleaned fuel injector.

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my 05 Avensis d4d tspirit runs fine when cold but as soon as it gets warm it’s rpm starts to flunctuate and as soon as it gets to a U turn will not accelerate once it’s ac is turned off, it runs as normal, and once it picks up, I turn on the ac back. any idea's? have changed fuel pump and cleaned fuel injector.

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