Problem with Stuttering 2011 1.6T T7 308 Wagon

S

SBS

New member
Tadpole
Joined
Sep 10, 2018
Messages
8
Location
Sydney
Hello everyone,
I'm having a love hate relationship with my 2011 308 Sportium wagon which is both awesome and terrible. ​
I'm hoping someone is able to help me out with my current problem as the usual searches haven't turned up a solution and neither have the mechanics.

The issue I'm currently having is that the car is stuttering when under load (eg putting the foot down to overtake or trying to change down and accelerate up on a hill). This doesn't ALWAYS happen but mostly it does. The car has had a lot of work done on it and I've complained about this issue to the mechanics a few times with no resolve (possibly because there is no code showing?). Could this be as simple as a dirty MAF or a faulty coil? Seems unbelievable that these wouldn't have been checked by the mechanics??

So far I have had the following fixed within the first 6 months of ownership (mostly covered under stat warranty thankfully):

- Oil Filter mounting Leak
- Thermostat housing Leak
- Coolant level sensor
- Oil pressure sensor
- Cylinder head cover
- Window washer (done twice)
- High Pressure Fuel pump
- ECU update (part of a recall)
- Engine Oil Pump Solenoid replaced
(part of a recall)​
- Turbo intake pipe replaced (had a worn seal)
- Intake Valves bead blasted
- Spark plugs replaced

The car also start eating oil requiring a top up every 2 weeks. At the same time I noticed there would sometimes be a puff of white smoke from the exhaust when I moved away after sitting at the lights for awhile. The shop reckons the solenoid replacement should have fixed these issues although I'm waiting for the low oil warning to come on again and/or another puff of smoke....

If anyone else has had this stuttering issue and knows of a resolve it would be much appreciated.
Thanks!
 
2011 makes it one of the early THP engines and several of those problems (eg thermostat housing, hp pump) were warranty items when the car was new. The replacements were redesigned components. The engine software has been updated a couple of times, and a visit to a dealer with the VIN will enable installation of all to be checked along with warranty repairs - they are registered on the Peugeot computer databases.

I know from my own experience that severe stuttering on pressing the pedal or even limp-home can be caused by crud build-up on the inlet valves, which happens to all direct injection motors from all makers. It might clear for a while but always returns. The THP engine is direct injected. The source is blow-by vapour and turbo bearings. It does not raise a specific fault code. However this engine has already been bead blasted. The current oil loss suggests the turbo as a first thought.

Sydney is a big place and the post doesn't say which part of town, but I would suggest that John Brown of Revive My Lion be given a call (http://revivemylion.com/Contact-Us.php) . He's not a cheapie but specialises in Pug diagnostics and can fix most things at your premises from a very well equipped van. Other specialist workshops are about, such as Colliers at Granville or PQ at Chatswood.

That's quite an astounding list of troubles.
 
Thanks Seasink, I haven't noticed any more smoke so far but do now have a fault code. Using a cheap code reader it's showing as P0299 - (low boost I believe?). I'm in St Ives so PQ would be the closest workshop. Would you recommend Revive my Lion over PQ or are they as good?

Thanks for the assistance.​
 
That list covers pretty much all the usual items and there have been a few service actions to cover some of those known problems. I would have pointed the finger at the engine cover as it is designed to trap oil vapour and has two or three small rubber diaphragms inside it that can fail. You can buy the large diaphragm via eBay from a Russian source, but on at least one version there is another inside that you can't really get at. So, replacing the engine cover as has been done should rule that one out.

Some other ideas ...
How old is the battery? A weak one can cause lots of issues.
Are you using 95 or better fuel?
Coils perhaps? If you register a fault on one, you could try swapping them around and see if it follows the coil or goes away.
What about a compression test to rule out piston/ring issues?
The turbo could be faulty if it is not developing proper boost. Maybe, the wastegate has wear and is leaking?
 
To the above suggestions, I'd add another. The pressure sensor is on top of the plastic air inlet pipe on the driver's side. It can get gunked up if oil is circulating there.

As to Revive or PQ, they are actually on speaking terms with each other and both have good reputations. Revive likes to do difficult diagnoses, and can test extensively, but doesn't have heavy workshop equipment in the big van so has made sharing arrangements with those who do. He can do engine work easily enough in your drive. PQ has conventional hoists etc.
 
I am in awe at the number of issues you have had. I may have one of them also - and I am wondering what people could suggest.

I have a 2012 308 with the EP6CDT 1.6 THP engine. Overall, after timing chain and high-pressure fuel pump replacement (mostly covered by warranty luckily) it is a great car. But for one issue.

After a cold start, and 1-2 minutes of driving, I may get a sudden lack of power when trying to take off from standing. If I take my foot off the accelerator and try again, we're good. This doesn't always happen, and only happens when cold.

On two occasions it caused misfire warnings and limp-home mode to engage.

A dealer reckons possibly a coil pack, possibly build-up on the inlet valves.

The trouble is it is not reproducible at will and this makes it hard to demonstrate. I had a whole week where it ran perfectly recently - cold and warm - and then I got one more instance of hesitation just yesterday.

Car is not burning oil, not using excessive fuel, smooth and responsive (except as noted above).

What do you think would be the most likely explanation for this problem?

(forgive an inexperienced forum member - should I start a new thread?)
 
Sorry for the late update - life is hectic! Had John do a diagnostic which was great. Seems the car has high oil pressure - almost twice what it should be running and has 3 permanent codes P15A0, P15A6 & P0945 pointing to the need to replace the oil pump. There is apparently a technical bulletin for this so seems like this is a known issue?
 
David S, the battery is pretty new I believe although I haven't replaced it myself to be honest. Yes, 95 or 98 fuel only. Coils was my original hope but seems there are deeper troubles with the oil pump issue. Have checked the wastgate and it's in perfect condition and functioning properly. Will try fixing the oil pump (at great cost) and see if that improves things.
 
Craig, I'm no expert but my own experience was that I had a P1385 Code - Super Knock for which Peugeot recommended the intake valve clean as per a technical service bulletin. I have to say that they were excellent about it and came to the party with the cost which is not cheap. The technician also showed me before and after photos and the valves were definitely gunked up.
 
Thanks for the update.

That's a new one on me - it's normally low oil pressure troubles that show up. The codes certainly agree with the diagnosis. You must be pumping oil away in unwanted places. Did John put a pressure gauge onto the engine? He's pretty clued up on these engines.

Has anyone got a copy of the bulletin?
 
Yeah, I'm keen to get it fixed ASAP for that reason. Am trying to see if Peugeot will come to the party again if the pump is a known issue. John didn't put a pressure guage on the engine, he showed me the discrepancy in pressure in the diagnostic program.

Would be good to see a copy of the bulletin if anyone has it.
 
The first two codes by themselves do suggest the oil pump. However, you have (I assume it is current) P0945 - Oil pressure regulation solenoid valve control Open circuit, which is probably where you should begin. You say this was done, so you want to recheck the installation and security/condition of the harness and ensure P0945 code is cleared before launching into an oil pump. It may well have a problem, but you often find a TSB will suggest you do not follow it when other faults are present. In this case P15A0 and P15A6 are the oil pump faults, while P0945 is not pointing directly at the pump. There is apparently a downgrade mode when P0945 is present and that is to change the oil pump to 'mechanical mode'.
 
That's good info thanks David. John at Revive noted that the both the recall items were still showing as outstanding but said that if it hadn't been done he wouldn't be able to get readings from it. I need to get Peugeot to do the same diagnostic in order for them to request a claim and as they did the recall work I will ask them about this at the same time.
 
Finally, a belated update. The stuttering appears to have been caused by misaligned pins on the connector to the re-circulation valve. These were put back in place and that issue finally appears to have been resolved (although how it happened in the first place would be interesting to know). I had the oil pump replaced which has resolved the high pressure (+$1000). 2 days later the engine light came on again, this time showing low boost & I'm told the fix is a new turbo. Peugeot agreed to pay for the turbo as goodwill (I was quoted approx $4500 + labour) and was booked in for the work at the next available time, 2 weeks later. When I delivered the car for the work, a few hours later I got a call that they had changed their mind and were only going to half lumping me with $2300 worth of repairs. This car is beyond a joke and is the most unreliable car I've ever had or heard of anyone having.
 
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