Focus TDCI

[mark_mcd]

Hi,

My brothers Focus 1.8TDCI has blown its turbo vacuum hose off leaving the car driving like it has no turbo at all. The car had the hose replaced last week as it was spilt giving the exact same symptoms. No abnormal smoke or noises though. However this time the engine light came on (he was doing 60mph when it happened). We have had it to the garage who claim that there are no fault codes registering but the light will not go out. Any ideas?

What causes the hose to blow off?

Thanks in advance.

[BoraBora]

hose was probably not connected properly, if it was then the turbo would just overboost sending the car into limp mode anyways

[nelly1]

The rubber probably just perished through heat/age/vibration.
Once split it loosened and fell off.

Just be thankful the turbo vanes haven't seized...

[mark_mcd]

Well the vacuum hose is now clipped on tight but we are now worried that if there is any excess pressure or whatever it may now not be able to escape? Why would the hose blow off in the first place?

Also the engine light is still on but no codes show on the garage computer and the car seems to drive fine. He is recommending to take it to a Ford garage to stick it on more advanced equipment. Does anyone have any idea why the light may be stuck on and how to reset it - if I disconnect the battery is there a chance that would work for example?

Thanks for the replys.

Edited by mark_mcd on Tuesday 9th March 23:07

[HellDiver]

There's something wrong if a vacuum pipe "blows off" by virtue of a vacuum being present. I don't think you mean a vacuum pipe at all, I think you mean a boost pipe. Yes or no?

[mark_mcd]

HellDiver said:

There's something wrong if a vacuum pipe "blows off" by virtue of a vacuum being present. I don't think you mean a vacuum pipe at all, I think you mean a boost pipe. Yes or no?

I am fairly certain it was the vacuum pipe that was mentioned but it sounds like it could be the boost pipe to the turbo (getting this info from my brother). The old one split so was replaced and the new one blew off soon after and threw up the engine light, which now will not go off. How do the diesels vent their boost pressure or any excess?

Thanks again.