Morning all, Happy Easter Monday,

 

2008 Skoda 1.9 Tdi 105bhp, with 180K miles on it. Serviced throughout it's life, albeit it's not cosseted and it's been driven pretty hard and has had a lot of use fully loaded and full of kit.

 

I've got a reoccurring problem, it's blowing an air hose off, front right lower corner between the intercooler and turbo. Drive it gently, it's fine, I managed 500 gentle miles, (keeping the revs around 2200 or less) in a couple of days and all went well but give it the beans out of a junction or up a long hill and it doesn't like it. I can't figure out why - I'm guessing that there should be a waste gate on the turbo system to release any excess pressure? Could that be stuck shut?

 

Secondary fault now apparent, the oil warning lamp is on intermittently. Oil is full, it's not burning any, or leaking any, no loss of power, no loss in performance and no increase in temperature (although the needle fluctuates more than it did).  The light flashes most of the time, the alarm sounds occasionally, usually on start up or when the car does anything other than cruise. Sensor? I know should always trust your instruments, I know it said 'STOP' and call for help but circumstances prevented that.

 

Are the two problems related?

 

I've had experience with the similar engine in an Audi A4 (110bhp) and that ran until at least 250K before I got rid and feel a little cheated.

 

Any help or solutions greatly appreciated

 

Many thanks in advance

 

Al

Have the actual oil pressure measured with a gauge and compare to what OBD reads (if available).

 

If you're having an intake hose blow off either it's not secured properly or there's a restriction downstream, check EGR for buildup.

Cheers MicMac, I'll get out this week and have a look at the valve.

 

 

OBD?

The intercooler hose might be worn out as there are aluminium tabs that keeps the hose in place, once these are worn the hose will need to be replaced to stop them popping out under boost.

Yes - the tabs that pushed in to the intercooler end were worn and no good so I bought a new hose and replaced it. I did wonder if I've not managed to get the pipe correctly seated when I did it (cold day/ramps/working on my back on the drive) and it's popped again.

You should hear a good positive click when refitting the hose as the wire U-clip engages the tabs.

Those connections can take a hell of a push to click home properly too.  I did one recently on my Octavia and found it easier to refit the clip into its latched position after the hose was pushed home fully.

Cheers Fellas, I'll get back under it and see if I can make a better job of it before I look elsewhere.

 

I limped the car home with the pipe off, about fifteen miles or so. Might that have upset the oil sensor/EGR valve?

 

Not knowing what instrumentation you have it perhaps it's how it shows a boost under pressure warning, RTOM.

Yeah strange, I fixed the hose issue (after limping home), drove the car for a couple of weeks or so, several hundred miles and then the oil warning light comes looming into view and causes consternation. It could be coincidental, completely separate issues that have just landed very close together.

 

Owners manual was very brief - just kind of stop and seek professional help - not very easy on an Easter weekend.

 

The car is getting to an age and mileage/condition that I no longer fill the tank! £20 at a time will do for now. My wife's lost confidence in it and is looking to change, I'm desperate to hang on to it, big building project planned and an old knackered car makes trip to the builders merchants and tip so much easier than a new shiny motor that I want to look after.       

 

I'll do some digging around owners manuals online and perhaps see if the local garage can offer some sensible advice without charging to pull it apart and tell me it's goosed.

 

Cheers to everyone -  your ideas and        thoughts are very much appreciated.

 

Al

You're very welcome, have it scanned and see what it shows.

Might be unrelated, but I had a problem a bit like this on a 2001 Ibiza TDI sport and it was apparently a waste gate problem, though in my case the hose did not come off. It blew up like a balloon, the car created clouds of acrid smoke and went into limp mode.

We solved the problem by getting rid of it, as we were advised the repair cost was prohibitive.

33 minutes ago, EnterName said:

Might be unrelated, but I had a problem a bit like this on a 2001 Ibiza TDI sport and it was apparently a waste gate problem, though in my case the hose did not come off. It blew up like a balloon, the car created clouds of acrid smoke and went into limp mode.

We solved the problem by getting rid of it, as we were advised the repair cost was prohibitive.

 

  ...... and it might well come to that solution here also!

You need a proper full scan to start with.

 

I reckon there's a fair chance the securing and installation of the pipework has not been 100 secure, hence the blow offs.

 

If the turbo is not regulating boost properly you might usually expect a boost under / over fault.

 

The oil pressure is a concern. As someone mentioned, get it measured with a screw in guage. It could be a blocked pickup amongst other things, failing old pump etc etc. 

I had a chat with the local garage yesterday. They changed the oil sensor switch but to no avail, problem still persists.

 

Start the car and leave it idling and running - no light. The light only activates when you begin to drive. The garage don't think it's an oil supply problem, it sounds and drives like it should and there's no way I could have covered the mileage that I have if it was oil pump knackered or a blocked pipe.

 

Light is more likely to show when your cornering or going downhill. Sensor switch wire earthing out somewhere perhaps?

 

No repeat if the hose issue, it's still all connected. I'm monitoring it. That might have been me not getting that installation correct. 

 

I'll keep looking for a solution to the oil light. 

 

If the new oil pressure switch is still showing low oil pressure, I'd still be worried until you can find out what the cause is. Can they screw a gauge in and check actual pressure? Sounds a little tricky if you have to drive with it to show the issue though.

draft question but have you changed the oil filter recently?  I had a similar problem on our old ATD 1.9 TDi Fabia and it was the filter that had gone...   it wasn't due t be changed but had kind of collapsed and folded in on itself somehow so was causing an intermittent warning light when slowing...

Edited 7 April, 20215 yr by skomaz

I haven't, it was done last August with the MOT. I saw your post when I was drifting around the forum looking for answer to the issue. I might look at an oil and filter change, it can only do the car some good.

3 hours ago, TheClient said:

If the new oil pressure switch is still showing low oil pressure, I'd still be worried until you can find out what the cause is. Can they screw a gauge in and check actual pressure? Sounds a little tricky if you have to drive with it to show the issue though.

 

I'm hoping that they can do a physical pressure check - I'll certainly ask them to 

Update and solution.

 

Turbo pipe seems to have been initially caused by worn clips and then the replacement hose not being fitted correctly by myself - I refitted it with a bit of force, resulting in it making some satisfying clunks. So far so good.

 

Oil light - wiring harness has rubbed on the gearbox causing the outer sheath to wear away and the circuit to earth and give a false indication. 

 

The two problems were unconnected.

 

Thanks for all your advice and help.