2011 Peugeot 308 1.6 THP 156 – Workshop Service & Repair Manual

Frequently Asked Questions about Your Peugeot 308

• My 2011 Peugeot 308 1.6 THP 156 has a rattling noise from the engine, especially on cold starts. What could be causing this?

  That rattling sound, especially when your 2011 Peugeot 308 1.6 THP 156 with the manual gearbox starts up cold, usually points straight to the timing chain. This particular 1.6 THP engine, you see, is notorious for its timing chain stretching prematurely or the tensioner giving up. When the chain gets loose, it makes that tell-tale rattle. If you hear it, it's really best to have a mechanic check it out pretty quickly. Ignoring it could lead to bigger, more expensive engine damage down the line, so don't put it off!

• I've noticed a loss of power and rough idling in my 2011 Peugeot 308 1.6 THP 156. Could this be due to carbon buildup, and how can it be fixed?

  Yes, those symptoms sound a lot like carbon buildup, which is a really common issue for your 2011 Peugeot 308 1.6 THP 156. Since it's a direct injection engine, fuel doesn't clean the intake valves, leading to carbon deposits over time. The best way to tackle this is often through a process called walnut blasting. This physically removes the carbon without harming your engine. You might also want to look into an oil catch can as a preventative measure. It's a smart addition to keep things cleaner in the long run.

• My 2011 Peugeot 308 1.6 THP 156 is losing power and showing an "engine fault" warning. Could it be the high-pressure fuel pump?

  It certainly could be! A failing high-pressure fuel pump (HPFP) is a frequent culprit for power loss and that dreaded "engine fault" message in the 2011 Peugeot 308 1.6 THP 156. This component is known for giving up, leading to low fuel rail pressure. You might also notice misfires or the car entering a "limp mode." Getting a diagnostic scan is crucial here to confirm if the HPFP is indeed the issue. If it is, a replacement is usually necessary to get your car running smoothly again.

• I've found oil puddles under my 2011 Peugeot 308 1.6 THP 156. What are the common places for oil leaks on this model?

  Oh, finding oil puddles is never fun, is it? For your 2011 Peugeot 308 1.6 THP 156, oil leaks commonly originate from a few places. The turbo oil feed pipe, especially where it connects to the engine block, is a frequent offender. The timing chain tensioner seal is another usual suspect, often found on the driver's side rear of the engine. Also, don't overlook the PCV diaphragm in the rocker cover or even hairline cracks in the plastic camshaft cover. A good look under the bonnet should help pinpoint the exact source!

• My 2011 Peugeot 308 1.6 THP 156 is overheating, or the cooling fan runs constantly. What should I check?

  An overheating engine or a fan constantly running on your 2011 Peugeot 308 1.6 THP 156 often points to issues in the cooling system. First, check your coolant level; it might just be low. Beyond that, a faulty thermostat or coolant temperature sensor is a very common cause, sometimes even leading the fan to run full-blast when the engine is cold. A worn water pump or a clogged radiator could also be to blame. A diagnostic scan can help identify specific sensor faults, guiding you to the right repair. Always use the correct coolant, by the way!