For sure get the codes read and do some diagnostics before replacing any parts. Otherwise you will be spending money to replace perfectly good parts and still have the fault.
Based on my experience the most likely faulted system is the secondary air which could be as simple as a rotted connector hose. Second most likely cause is a vacuum leak some where.
My car lost the secondary O2 sensor at about 85K miles but the primary is still working fine at 134K.
--
'96 965, 16' wheels, Michelin Pilot Sports, rear 18mm bar + Koni, 201 HP cams, 134K. Put 200K on '85 745 TD.
|