Hello I am new here!
I also have problem with 2.4 td 1997. there is no boost and it is the same when MAF is disconected only diffrence is that, there is a lot of black smoke from exhaust. I also can not hear no sound from turbo.
I try to disconnect turbo pipe on the top that go to inlet and start the car. Reving in neutral and there is air blowing from turbo house on the top of the engine so I think turbo is working or am I wrong?
Westgate is not blocked! What next I can check.
Is there any chance that MAF is broken even so there is no difference when it is unpluged. Engine is starting with no problem at cold morning.

Thanks for any help :worship:

The fact there is no difference when disconnected would lead me to believe that the MAF is the problem.

Today I check boost control valve and it is ok. I can not hear any whisteling from turbo so can that mean that turbo has gone.

darko1307 said:

Today I check boost control valve and it is ok. I can not hear any whisteling from turbo so can that mean that turbo has gone.

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Where is the boost control valve on the TD? Do you mean the valve that controls the EGR valve? If so check the small vaccuum pipes to that for splits etc. You can try bypassing the EGR valve by cutting a small piece of tinplate (beercan even) to blank off the pipe at the inlet manifold end. If that makes a difference, your EGR may be sticking open, so remove, clean & make sure it works OK.

Yes I ment valve that control EGR. I try to open egr by making negativ preasure and open EGR. When ERG is opened on minimum the engine is choaking and shut off. So if EGR is opened all the time the car would not work good at minimum. How can I be shure that turbo is gone. I try to losen intake pipe from turbo and let little hole on connection to intake mainfold, go for ride end did not heard any whisteling an blowing. On my old tipo td when there was a hole in turbo rubber pipe the car was powerless but I heard whisteling and blowing from air going out.

Thanks for any advice!

only way to be sure EGR is not stuck open or passing is to block off the port. It would never be open at idle. If you suspect the turbo have you made sure the wastegate actuator is moving fully in and out ok and not stuck ?. And is the compressor wheel free to rotate ?. Are you sure the hoses and intercooler are ok and not leaking ?.

I try to move acutator with hands and I can move it. All hoses are ok I check them. I try to move compressor wheel and It is moving but one of my frands ho has Alfa 155 Q4 sad that he think turbo is bot moving free. He sad thet when he spin his compresor it would continue to spin for couple of turns. My turbo not. I can move iz but can not spin it to rotate for more then one turn freely.

yes the compressor wheel should spin a few turns when given a spin by hand, especially if engine has been running. I think if there is exhaust smoke when the MAF has been disconnected then fuelling would be enough to generate boost (MAF values replaced by default) and it should boost correctly. Has the turbo been starved of oil ?

There was some oil in tubes and in compressor but net mech more then in other turbo compressors that I have seen and that were full operating. I try for free play of axel of turbo and there is no free play, but it could be that bearings of turbo are smashed. I give car on diagnostics and if that don't give any answer then I think turbo is fault. Thanks for any help I would post further info about problem. I am sorry for bad english not my home lanquage

If you pull off the pipe going to center of the turbo compressor (inlet side from filter) and rev the engine, you will definately hear the turbo (will sound a bit like a jet engine). If it does not, or takes a long time to spool up, then it is probably damaged. the only other DIY check is to put on a boost gauge and see what boost pressure it generates at full throttle in 4th or 5th gear.

Today I talk with mechanic and he sad that there was code for fault of valve that control of EGR end ECU fault code. He deleted fault cods and check valve and now valve that control EGR is working and there is no fault code for it. But there is now code for ECU fault that can not be deleted and it looks like ECU is dead. But I read some posts here about same problem and ECU was not fault in the end. So now when EGR control valve is ok what can cause fault cod of ECU? I doubt that ECU is fault. Mechanic has same opinion as I about fault of ECU.

what is the ECU fault code description exactly ?. Was he able to actuate the EGR valve from the diagnostics to check its operation ?.

I don't now fault codes but he told me he chek EGR and valve that control EGR and now they work. He deleted error codes and go for ride but there is some ECU fault code that he can not delet. He describe it like short circuit somewhere that give ECU fault code. I would ask him what error code he read from diagnostics so I can write here.

I talk to mechanic and there is no fault code, there is just short circuit that seams it is in ECU. That is what can be seen on diagnostics. That error can not be deleted or do anything whit it. Is it posible that when valve that control EGR is new everythig would be normal? I read some posts on forum about same error and they also think that ECU is dead.

Thanks,Darko!

from previous posts it seems the EGR vacuum valve driver in the ECU gets damaged and shows a fault even though it is working ok. If another valve does not cure it, then the ecu may have been damaged. however it could possibly be repaired - have a look here..
http://www.bba-reman.com/catalogue/Product.aspx?product=21509

Hi! One man that repair electronics try to see what is wrong with my ECU and he sad that there is no ECU demage. He put some new ground wires that has been suspicius and now there is new message. It say like this on diagnostics
ECU Fault:voltage status
Is there any idea what could be the problem. :idea:

Problem solved. It was problem in Catalytic converter it was smashedv due to hit in it on bump! Exhaust was blocked totaly nad that lead to no turbo and no power. I can not belive that this stupid catalytic converter can cause such problems! Thanks everione for helping.