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Discussion Starter #1 (Edited)
THIS INFORMATION MAYBE HELPFULL TO ANYONE WITH A LUBRICATION SYSTEM FAULT 308 (T9) DEGENERATION OF WET TIMING BELT.

The car came to me with the engine knocking, rattling and some violent shuddering it was also in limp mode no engine management light just a warning message saying you have an engine fault have the vehicle repaired.
Owner said that it had recently had a new turbo as it had failed and wasn't sure if it had been done correctly (what I think he meant was that he had diagnosed it and changed the turbo and wasn't confident that he had done it right)
First thing was first it was hooked up to planet and the following information was presented.
P2262 72 TURBOCHARGING AIR CURCUIT
P15A0 22 LUBRICATION SYSTEM
P2196 00 UPSTREAM OXYGEN SENSOR SIGNAL
P2271 00 DOWNSTREAM OXYGEN SENSOR SIGNAL
P0299 22 SUPERCHARGING PRESSURE SENSOR
To no surprise when looking at live data graphs there was no turbo output at all I took this as it was dead and my next step was to check that particular area.
Again to no real surprise the turbo was seized in fact the compressor nut was sitting in the compressor housing, the compressor wheel and turbine shaft were jammed solid but somewhat of a result nothing seemed to have broken up no wheel blades ETC so at this point I assumed the engine had not ingested anything, I proceeded to remove the turbo from the engine.
On further inspection the turbo had been installed very poorly the tabs in the gaskets for the oil return pipe and the water feeder pipe had been sandwiched between the turbo and pipe and there was only 3 fixings on it(confirming my theory from earlier the owner was actually talking about himself) (for your info this is a water cooled turbo oil is for lubrication only)
Thinking that its quite unusual for a turbo to fail this early in its life anyway let alone two of them in two months I then turned my investigation as to why this was happening (like the owners friend should have done before he bought and blew another turbo)
So we now no the turbo had failed so that should explain
P2262 72 Regulation of boost pressure different to reference value due to no output by turbo.
P2196 00 Upstream oxygen sensor receiving an incorrect value due to no out put by turbo
P2271 00 Downstream oxygen sensor receiving an incorrect value due to no output by the turbo
P0299 22 Supercharging pressure sensor differential pressure incorrect reading and or different to reference value due to no out put by turbo.
So that clears that up only leaving p15A0 22 LUBRICATION SYSTEM FAULTY.
At this point its fairly obvious as to whats happened to the x2 turbos or for those that don't in a nut shell it has been starved of oil but why.
This baffled me for a while service box sort of points to the degeneration of the timing belt but in my mind I thought well the oil pump isn't even run by the timing belt its suction pumped by chain with a solenoid valve control not even the water pump is driven by the timing belt this has its own drive belt run of the crank pulley.
So further investigation bought me to a repair procedure outlined in the list of fault codes in relation to P15A0 and there is more than one procedure and code for example P15A0 22 refers to a faulty lubrication system as we know but P15A0 21 & 23 refer to specific areas of that lubrication system so it didn't really pin point the exact component or area instead service box did give me a procedure to carry out in relation to the fault code, symptoms and data collected during the initial investigation and this is where I put 2&2 together and realised the timing belt was degenerating and breaking down when it passes through the oil giving it the dreaded welt belt issue. What happens is over time the wet belt degenerates and breakers up the oil system pumps this debris around the engine clogging the oil pump solenoid valve, both inlet and outlet timing valves, vacuum pump filter, sump strainer, turbo oil feeder pipe (starving turbo of oil) and just about every thing rather is oil fed.

1) Origin- destruction of the timing belt
2) Repair - Reading of the fault codes, check the condition of the filters of the oil pump solenoid valve, condition of the oil pump strainer, condition of the vacum pump oil filter, the condition of the 2 variable timing solenoid valves
3) Replace if necessary- The vacum pump, the timing belt, the lower oil sump, the oil filter and the banjo bolts and seals of the turbo oil feeder pipe.
4)Cleaning- of the vacum pump oil filter, the oil pump solenoid valve, oil pump strainer, and the two variable timing solenoid valves.
5) Read the fault codes- If fault code P15A0 IS PRESENT then follow this procedure in the absence of P15A0 do not follow this procedure.
6)remove the oil pump solenoid vale, check the condition of the filters on the valve.
7) if they are partially or totally clogged clean the filters with a good brake cleaner.
8) Drain the engine oil ( use a good engine flush) and remove the sump pan, check the condition of the oil pump strainer use brake cleaner to clean it thoroughly, replace the sump pan with a bead of gasket sealant.
9) remove the vacum pump, check the condition of the vacum pump oil filter this one was so blocked I couldn't even tell it was a filter, if the filter is clogged you must replace the timing belt. ( in accordance with service box repair code 99F61A)
10) Remove the variable timing solenoid valves 1x inlet and 1x exhaust, check the condition of the filters on the valves if they are partially or totally blocked clean them with a good brake cleaner and refit (I replaced these with two after market valves I got them both for less that £40 Peugeot want £119 each for these and £198 for the oil pump solenoid valve)
11) in addition I also had to replace the turbo oil feed pipe plus seals and banjo bolts, sump nut and seal and as recommended I replaced the water pump, water pump drive belt, alternator belt, timing belt, oil filter, air filter and spark plugs, I'm not saying these service parts should have been done but I personally think that the up keep of this vehicle played a massive part in the demise of this engine and had it been serviced or at least maintained the outcome wouldn't have been quite as catastrophic as it was thats without mentioning turbo number 3 that had to be installed (correctly).

The car has now been back on the road 5 weeks and by all accounts driving well, the moral of the story is don't ignore your vehicles warning signals, do not try to diagnose things you no nothing about, maintain your vehicle regularly and in my opinion these should have a full service 6 monthly especially the T9 & EB2DT as they are renowned for carbon build up.

I hope this is of some use.
 

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Someone should do a chain conversion for this engine,i believe Ford did after suffering the same issues with a belt in oil on one of their diesels (probably a Peugeot design) my car is at 27000 and i'm feeling anxious even though it has been serviced on schedule,what year was the car that had this issue and at what mileage as you said it suffered some neglect which no doubt accelerated the degradation of the belt.
 

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No the ford engine started life with a chain ford decided in 2006 to start using wet belts !!

It is a purely ford engine that rarely broke after the wet belts they break all the time i sell loads of them the conversion consists of fitting the older chain system in place of the useless belt you then have a good reliable engine again !
 

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Looks like Ford hasn't learn't anything,the 1.0 litre Ecoboost has a wet belt too "reduced friction" i would rather have increased reliability.
 

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Belt cheaper than chain. Makes no difference in the showroom, and provided it lasts until the warranty period has ended, why would they care?
 

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Discussion Starter #8
I’m sure it was 2015 and around the 40,000 mark this particular car just showed signs of neglect but the wet belt will inevitably catch all owners of this particular engine out, since I did this particular job I have done 2 more and both were in months of coming off of a used car forecourt in one instance the car could have been sitting there for up to seven months which leads me to believe that it will happen to cars that either sit for a long time or limited use quicker as when sat the oil is only attacking one part of the belt but that is my opinion but defiantly agree with you guys Peugeot isn’t the brand it once was and they have cut corners on this car type severely not just powertrain but body as well with the flexing axle and the clutch assembly, water ingress it’s a shame and that once it’s out the door and with things harder to get done on extended warranty why would they care.
 
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