Peugeot 1007; Exhaust System; Lambda Sensors; O2 Sensors

Drawing shows the 1.4 Petrol (1360cc) parts - other models are different.

The original exhaust systems (including the oxygen sensors) appear to be trouble-free on these cars. After 7 or 8 years, the rear exhaust box may need replacing and this is a straightforward job for the local exhaust specialist.

More recently, I have needed to replace the 16 year old centre exhaust on one car - check if you need a fitting kit 1797.74 first, as it includes a special "slippery" gasket. If the old one is refitted, you may get odd squeaking noises as the exhaust tries to flex.

Drawing shows the 1.6 Petrol (1587cc) parts - other models are different.

Drawing shows the 1.6 Petrol (1587cc) manifold and catalytic converter - other models are different.

Drawing shows the 1.6 Petrol (1587cc) heatshields - other models are different.

Rear exhaust hanger

These can rust out after a long time - but can be replaced - see ebay advert or search for "Peugeot 1007 rear silencer exhaust strap". It would be a good idea to spray with a can of heat-resistant spray paint as the sides may not be treated so it could start corroding again - - - -

Alternatively, this is an aftermarket rear exhaust - the hanger is welded directly on to silencer.

No noticeable increase in sound levels - works well and cheaper! Fitted June 2014 and still OK seven years on

Lambda O2 Sensors

There are two on each petrol engine - see drawing

Catalytic Converters

The average age of catalytic convertor is 10 years, what would be the most accurate way to isolate a faulty or partially blocked one in a 1007?

I've not heard of any needing changing on the petrol models so far - they do seem to go on and on. Unless the engine light is on, leave well alone.

If the engine light is on - then

Is it misfiring? If so then plugs; maybe coil pack.
If it hesitates at low revs - then change MAF and clean butterfly area
If short of power; check air filter (it may be clogged or worse, got wet somehow)
Quite often the engine management light can go out after a motorway blast to clean everything out and/or put a heavy dose of fuel system cleaner in the tank.

Only once these are all checked and cleared, then look to the O2 sensors and/or catalytic converter

My view only - others may have better solutions.