Loss of power when hot

[Koops]

Hi I have recently brought a 2009 2.2 d4d when cold pulls like an absolute train but when it gets hot, it has loss of power like it is being starved.

I teach car mechanics and this is stumping me.

I have a snapon1 versus pro diagnostic platform.

No fault codes stored in the system live data looks good throughout the 25 Mike journey to work.

I replaced all the filters and cleaned out the EGR valve although it wasn't clogged.

Has any one came accross this fault before to give ideas as to where to go next with it.

 

[Byzii]

Hello,

Maybe you can shed some more details about the issue, for example, is there black smoke from the exhaust when you try to accelerate? Are there any strange new sounds?

What kind of fuel have you been using?

Does the issue start occurring exactly when thermostat opens up?

 

Take note that it's possible to not clean the EGR properly (valve still sticking) or it's possible that the EGR valve is just dead and you need a new one.

[Koops]

No smoke at all it's possibly had egr/Air flow delete as I have no live data for them 

[Amateurtorque]

Sounds like an intercooler issue, when the engine is cold air going into the engine is already cool, when the engine is warm the intercooler is not compensating for the warm engine compartment?

You could try timing an in gear acceleration time, for example 30-60 in 3rd gear, when the engine is cold and when the engine is hot, to see how much different there is.

[Koops]

Thank you forthe suggestion amateurtorque

30 to 60 when cold is a couple of seconds 

30 to 60 when hot is a lot slower feels like starvation 

Sometimes idles at 1000 when hot.

If it was intercooler surely it would smoke 

[Engberg88]

Hi

Did you ever find a solution to the problem?

[Koops]

Hi as yet no suspect it may be the SCV valve which is suction control on the fuel pump just trying to cross reference the number from old valve is prooving difficult but where I work we have just taken an older model in with the dame valve so I m going to try it and see if it makes a difference.

[Longcock]

I was watching you tube try to find it . It turned out to be a temp sender wich tels maf and other things what to do the mechanic tried all sorts before susing it same symptoms as yours hope this helps

[Koops]

Hi thanks do you know which temp sensor it is? That you had replaced 

 

[Longcock]

I can't but it was on you tube I will try to find it again and send it to you 

[Longcock]

On you tube.  bodgit and leggit garage toyota avensis update no power fixed. 

I would love to know if you fix it koops 

 

[Koops]

Just can't decide as to whether it is the ambient air temp or coolant sensor 

[Longcock]

It looks like coolant to me have you seen the video on you tube? 

[Koops]

Couldn't find specific video for the fault 

[Longcock]

Try typing 2.0 d4d no power when hot and look for what I said before when you scroll down the video's look for a chubby faced man thats the one 

[Koops]

Just found it boggit and legit garage dude

[Longcock]

Thank god for that lol 

[Koops]

Have ordered a coolant temp sensor If it fixes it I will update this thread 

[Longcock]

Ok cheers good luck

[Koops]

Replaced coolant temp sensor no change to vehicle 

[Alan1234]

Hi I find with my avensis when cold and with electrical loading on it idles around a 1000 rpm your temp sensors maf sensor etc all give the ecu the information needed for correct air/ fuel ratio ,if you have the equipment to read these sensor would help also the pressure readings for the dpf ,injector readings could be going into a limp mode