It does 2 miles to work 2 miles back.. but does longer journeys regulary does good runs of 30 to 40 miles up and down motorway gets good blasts on occassio and is used to go on holidays in which are few hundred mile runs at a time..
It done that since 60odd thousand miles and been fine.
No light is on now since moving second sensor post main cat so that is fine now.
Sensors were all replaced when welded new boses in so all four are new and have no light so probobly is a precat issue.
3.0 pipes were probobly cheap crap pattern cats not doing much.
On the 2 mile journey i let it warm up a bit before leaving for work... and when i arrive at work i leave it running for 5 to ten mins.. idle is always 550 ish (not cold idle) so no fuel enrichment. And temp gauge rising.
Done ut fir years never had issues.. if it is that thats messed the original 17 ysar old.cats up... its fine ill just get cats sorted and be ok for another 17 years haha.
Thinking it precats are shot probobly slightly blocked or broken away inside. Causing back pressure build up slightly.... but as second sensor moved behind main cat lambdas are reading fine as main cat ok.
Im either gonna get good sports cats install in 3.0 sownpipes and refit them.
Orrr try and pruchase type approved 3.2 downpipes with new precats
Two miles isn't enough...
It won't ever get up to temp, so will always be running with fuel enrichment, not only does this kill the fuel consumption, but you may as well pour petrol down the exhaust.
I would wager that if you drove it an extra 20 miles on each commute, the light would go off.
And you could move the bosses if you haven't already.
^^^^^ this,,,
You short run is killing the poor thing, it needs to stretch it's legs, as DG said a good 20 mile run,