Technical 2007 Fiat Ducato 3.0 fault code P0340

[panutt]

Hi. Some weeks ago I got the yellow engine lamp on dash. Code reader said P0340. Deletetd the code and move on. After a 5-6 faults, it starts works witout codes, but I want to change sensor anyway. . I ordered a new camshaft position sensor from Hella. Installed it, but engine will not start, sometimes ignite for 1-2 sek. So I think the new sensor was faulty. Innstalled the old sensor and engine starts fine. Ordred an expencive Bosch sensor. Same with tis one. Engine will not start. Code P0340 every time I try starting. (yes I have the OBD2 scanner). When I put the old sensor back, then the engine starts without problems. But ! : I tried the new Bosch sensor AGAIN, pressed the trottle pedal to the bottom, and yes, the engine starts. Idling fine, but with code P0340. So I drive it for a trip, but when home the starting problems still there. Now, I innstalled the olde sensor, and guess what. Even problems with the old one. Starting problems, starting sometime, some with code, some without code. What is wrong. Is it ECU that dont read/save the new sensor or similar? Someone understand something?

 

[jackwhoo]

If chain is worn enough to cause the problems you have been having then the chain and associated parts should be replaced .

I don't see why the engine needs to removed from vehicle to replace chain etc.

 

[jackwhoo]

 

[panutt]

If chain is worn enough to cause the problems you have been having then the chain and associated parts should be replaced .

I don't see why the engine needs to removed from vehicle to replace chain etc.

All workshops that repair ducato (around me) says the same, No way they will change the chain without takeing engine out. Actually no one has ever changed the chain, and spesially not because of timing problem. May be.....there is something else that is faulty..? Key on camshaft, tensioner, ? :-(

 

[jackwhoo]

Whatever the problem is it appears that your nearby workshops want to remove the engine to find out.

in the video the camshaft sprockets have no key ways.
Plus the lower chain cover has to be removed to fit crank locking tool.

The engine has 2 chains and associated parts.

What does the workshop say the cause of timing fault is? They are the ones who have stripped down quite a lot of the engine to fit timing pins, can see the tensioner, chain guides , chains, sprockets etc

 

[panutt]

Whatever the problem is it appears that your nearby workshops want to remove the engine to find out.

in the video the camshaft sprockets have no key ways.
Plus the lower chain cover has to be removed to fit crank locking tool.

The engine has 2 chains and associated parts.

What does the workshop say the cause of timing fault is? They are the ones who have stripped down quite a lot of the engine to fit timing pins, can see the tensioner, chain guides , chains, sprockets etc

The camshaft ends has guide holes/studs for the sprocket as far as I can understand. The workshop talks about stretched chain, but there is no rattling noise. I´m sorry but I doubt if they are telling the truth :-/ OR, there are som other unknown issues whit the chain, timing, sprockets .etc. Only thoughts.

32 / 5 000

 

[jackwhoo]

I don't know if that's a miss- translation in photo but they are not key ways as I recognise them

 

[panutt]

The camshaft ends has guide holes/studs for the sprocket as far as I can understand. The workshop talks about stretched chain, but there is no rattling noise. I´m sorry but I doubt if they are telling the truth :-/ OR, there are som other unknown issues whit the chain, timing, sprockets .etc. Only thoughts.

32 / 5 000

The workshop will give me an approximate price for the whole job. I will let them do the job. What I not have told is that the engine is an overhauled engine. Installed by a workshop at November 2022. This case was an insuranse payed compensation after an accident. The engine shuld be totally overhauled. Yet they only give 12 months varranty on the engine. I will have a report from the worshop, and use the lawyer from the insurance company to front the case as we in Norway has something translated is "the Purchase Act" saying 2 years warranty. I will try, at least.

 

[jackwhoo]

The photo looks like a special tool bolted to the engine rather than the camshaft sprockets.
Possibly a tool to hold the sprockets/cam shafts whilst tightening sprocket bolts

 

[panutt]

The photo looks like a special tool bolted to the engine rather than the camshaft sprockets.
Possibly a tool to hold the sprockets/cam shafts whilst tightening sprocket bolts

Seems to fit perfect in sprockets.

 

[jackwhoo]

Ah the extra information about "overhauled" engine

 

[jackwhoo]

Seems to fit perfect in sprockets.

Those holes are covered by the sprocket retaining bolts

 

[panutt]

Ah the extra information about "overhauled" engine

Yes. This should be a "new engine", and so far (before this) I have drove it 45.000 km without any hickups. So I´m curious about what this is for some fault.

 

[jackwhoo]

Yes. There should be a "new engine", and so far (before this) I have drove it 45.000 km without any hickups. So I´m curious about what tis is for some fault.

Clearly if the timing is incorrect as current workshop says.....the engine wasn't overhauled properly , or not with new parts, or with poor quality timing chain/s parts.

 

[panutt]

Those holes are covered by the sprocket retaining bolts

Yes they are, but I beleive they are short enough to not go through the hole, but flush with the sprocket.

 

[jackwhoo]

Yes they are, but I beleive they are short enough to not go through the hole, but flush with the sprocket.

I don't know.

 

[panutt]

Clearly if the timing is incorrect as current workshop says.....the engine wasn't overhauled properly , or not with new parts, or with poor quality timing chain/s parts.

Yes, and IF I have any change to demand compensation, I think I have to leave the job to the workshop. Asking them to take pictures of the "stretched chain" an so on.

 

[jackwhoo]

The current workshop possibly could possibly check if one or bolt camshaft sprocket bolts are incorrectly torque which could have caused the timing to "go out"

 

[jackwhoo]

It is possible to have a worn chain and not hear rattle of tensioner working correctly and not yet reached end of its working limit.

Remember your engine has 2 chains subject to potential wear

 

[panutt]

The current workshop possibly could possibly check if one or bolt camshaft sprocket bolts are incorrectly torque which could have caused the timing to "go out"

Yes, but what I have experienced after phone calls to other Ducato specialist workshops today, 8and there has been a lot) is that the sprockets is NOT of the floating type. That said, there should be impossible for the sprockets to rotate on the camshaft. (if not the guide pins, keys or other thing I cant imagine.

 

[jackwhoo]

People do talk about stretched chains .....but they mean worn chains . Wear increases the distance between chain links