Sluggish Engine Power

[james.s]

I have an 05 avensis 2.0 d4d. When I try to pull of from standing start there is no real power or if I'm I'm 5th gear driving at 2000 revs I have to drop down a gear to go quicker even on level roads. I have replaced the egr valve all be it a second hand one. I have cleaned the inlet manifold replaced fuel and air filter. When the bonnet is open I can hear the turbo like air going through it. I have put cleaners through the system and making no difference. Engine just feels very restricted. No black smoke when accelerating was some white smoke on start up for a few seconds but now seems ok. Any suggestions

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[avensisd4d786]

any fault codes?

[james.s]

None. No light on dash.

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[avensisd4d786]

have you checked all vacuum pipes & the two boost pipes for spits or wear and tear

the symptom you describe is the one I had when I left pipe off going to the MAP sensor 25760

[james.s]

I can hear air well I think it is somewhere round the turbo on tick over but can't see or feel any thing obvious

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[james.s]

Checked round the pipes no air leak. Noise doesn't get worse when the accelerator is pressed. I know in the turbo there is a turbine like thing could it be this vibrating and causing lack of power. There is no blue smoke while driving

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[Konrad C]

The last time I experienced a symptoms described by the original poster, was when I drove my brothers 1999 Ford Galaxy TDi. I knew straight away that it was the MAF sensor and he had it changed on the next service. That was a VW engine.

Not sure if Toyota's set up behaves in a similar way, plus it may not show any fault codes unless the EML comes on. My thinking is that the fault MAP sensor is not giving the correct reading, so there is no boost when needed.

[james.s]

It would be worth a try changing it. I'm drawing a blank so will try it

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[frankie406]

Can I hijack this.the pipe in the diagram number 25760A going what I think is the intercooler?what is the pipe and what does it do.mines was off and black sticky oil was all over the Battery and airbox.

[Famofisher]

Good day,  I'm driving an 04Toyota Avensis  anytime I'm on move and I has to slow down, pick up again to accelerate become so hard,  it start hesitating until I have to press down the accelerator then it picks up until when I have stop slow down again please what cN I do?

[Colourd]

On 5/24/2015 at 12:07 PM, james.s said:

I have an 05 avensis 2.0 d4d. When I try to pull of from standing start there is no real power or if I'm I'm 5th gear driving at 2000 revs I have to drop down a gear to go quicker even on level roads. I have replaced the egr valve all be it a second hand one. I have cleaned the inlet manifold replaced fuel and air filter. When the bonnet is open I can hear the turbo like air going through it. I have put cleaners through the system and making no difference. Engine just feels very restricted. No black smoke when accelerating was some white smoke on start up for a few seconds but now seems ok. Any suggestions

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MAF sensor, clean or renew

[Colourd]

On 4/7/2019 at 6:15 AM, Famofisher said:

Good day,  I'm driving an 04Toyota Avensis  anytime I'm on move and I has to slow down, pick up again to accelerate become so hard,  it start hesitating until I have to press down the accelerator then it picks up until when I have stop slow down again please what cN I do?

Fuel Filter - renew

[m456an]

Fuel filter should be changed every 2 years on diesels.