Heyup Lads.

Need some advice. I've had new turbo pipes (4) fitted this week, due to having a problem with the old ones being worn and letting air in causing black smoke etc... Now there's a fault code coming up with boost condition (over boost) and and the car going into limp mode. But also when this happens, the car hold back, loses power and there is a bloody horrible metallic gratering/grinding noise, like something trying to seize up, plus black smoke out the back. What i've read and people i've spoke to all seems to point to the turbo on its way out.   Is it worth bothering having the turbo cleaned ? Or just have it replaced ?

The car is a 2004 vrs and done 170000 mls. Its on the original turbo !!

Cheers Pete.

Edited 31 July, 20169 yr by nealey

At that mileage on the original turbo you are probably running on borrowed time, even if the fault were elsewhere.

The black smoke symptoms suggest too much fuel for the available air which is either leaking out or not being pressurised in the first place. I have had limp mode/overboost from a wiring issue with the combined boost pressure/temp sender but that does not cause graunching noises !

 

Given mention of graunching noises I would stop driving straight away before the inlet tract gets contaminated with swarf from what I would expect to be the turbo giving up the ghost. If in doubt perhaps fit a 2nd hand cheapie to prove the case ?

Edited 31 July, 20169 yr by poiuytre111

Right.

Found the problem, when i fitted my cone filter, I block up the vacuum pipe going to the air box, this was done on someone's advice. I unblocked the said pipe and the cars been running fine for the last few days. Now today i have blue/oil smoke coming out the back and i have noticed when i turn the engine off the turbo is making a bad noise, sounds like a bearing type noise. as it slows down. Not good. Looks like new turbo after all.

Any ideas ?

Cheers.

Once the turbo starts losing oil and swarf into the inter-cooler, the repair becomes a lot more messy and potentially risky (if you leave stuff to be ingested by the new components). Better to remove the failing turbo early.