10-02-2018, 06:34 PM
Although I've tested vacuum & that seems OK & also the lambda readings look good I had been thinking about trying a new inlet manifold gasket. I had wondered if a very minor leak on one cylinder inlet would cause the symptoms but not be spotted by common diagnostics? It seems to have been running particularly rough this week.
The next item on my list though is to locate & unplug the power steering pressure sensor. I've read in a number of places that this is a common(ish) cause of idle problems. Replacement sensors are no longer available from Peugeot for my car so if that improves the problem it'll just have to stay unplugged.
No harm in changing the fuel filter but if it was partially blocked you'd particularly notice problems at WOT.
The next item on my list though is to locate & unplug the power steering pressure sensor. I've read in a number of places that this is a common(ish) cause of idle problems. Replacement sensors are no longer available from Peugeot for my car so if that improves the problem it'll just have to stay unplugged.
No harm in changing the fuel filter but if it was partially blocked you'd particularly notice problems at WOT.